EP1097192A2 - Detergent tablet - Google Patents
Detergent tabletInfo
- Publication number
- EP1097192A2 EP1097192A2 EP99933627A EP99933627A EP1097192A2 EP 1097192 A2 EP1097192 A2 EP 1097192A2 EP 99933627 A EP99933627 A EP 99933627A EP 99933627 A EP99933627 A EP 99933627A EP 1097192 A2 EP1097192 A2 EP 1097192A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- phase
- detergent
- acid
- preferred
- tablet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003599 detergent Substances 0.000 title claims abstract description 168
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 50
- 239000007916 tablet composition Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 169
- 239000004094 surface-active agent Substances 0.000 claims description 72
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- 239000003054 catalyst Substances 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 39
- 238000007906 compression Methods 0.000 claims description 30
- 230000006835 compression Effects 0.000 claims description 30
- 238000005406 washing Methods 0.000 claims description 23
- 238000004851 dishwashing Methods 0.000 claims description 20
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- 239000013078 crystal Substances 0.000 claims description 7
- 239000003966 growth inhibitor Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 229920000881 Modified starch Polymers 0.000 claims description 5
- 239000002738 chelating agent Substances 0.000 claims description 4
- 235000000346 sugar Nutrition 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 3
- 235000019426 modified starch Nutrition 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 229920000592 inorganic polymer Polymers 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 238000007922 dissolution test Methods 0.000 claims 1
- 238000004090 dissolution Methods 0.000 abstract description 20
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- 125000004432 carbon atom Chemical group C* 0.000 description 50
- 125000000217 alkyl group Chemical group 0.000 description 44
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 30
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 13
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- 241000894007 species Species 0.000 description 12
- YNJSNEKCXVFDKW-UHFFFAOYSA-N 3-(5-amino-1h-indol-3-yl)-2-azaniumylpropanoate Chemical compound C1=C(N)C=C2C(CC(N)C(O)=O)=CNC2=C1 YNJSNEKCXVFDKW-UHFFFAOYSA-N 0.000 description 11
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- 239000001257 hydrogen Chemical group 0.000 description 11
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- 150000008051 alkyl sulfates Chemical group 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 10
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 10
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- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 9
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- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 9
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- 150000007942 carboxylates Chemical class 0.000 description 9
- 150000004665 fatty acids Chemical class 0.000 description 9
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 9
- 125000001424 substituent group Chemical group 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 8
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- 150000001298 alcohols Chemical class 0.000 description 8
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 7
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- 229940035023 sucrose monostearate Drugs 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
- 108010038851 tannase Proteins 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 229960003080 taurine Drugs 0.000 description 1
- 235000013616 tea Nutrition 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 150000004026 tertiary sulfonium compounds Chemical class 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 150000004685 tetrahydrates Chemical class 0.000 description 1
- ODBLHEXUDAPZAU-UHFFFAOYSA-N threo-D-isocitric acid Natural products OC(=O)C(O)C(C(O)=O)CC(O)=O ODBLHEXUDAPZAU-UHFFFAOYSA-N 0.000 description 1
- 125000000341 threoninyl group Chemical group [H]OC([H])(C([H])([H])[H])C([H])(N([H])[H])C(*)=O 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-M toluene-4-sulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-M 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 150000003852 triazoles Chemical group 0.000 description 1
- 150000005691 triesters Chemical class 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- JSPLKZUTYZBBKA-UHFFFAOYSA-N trioxidane Chemical class OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 1
- WCTAGTRAWPDFQO-UHFFFAOYSA-K trisodium;hydrogen carbonate;carbonate Chemical compound [Na+].[Na+].[Na+].OC([O-])=O.[O-]C([O-])=O WCTAGTRAWPDFQO-UHFFFAOYSA-K 0.000 description 1
- 239000010981 turquoise Substances 0.000 description 1
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 239000004474 valine Substances 0.000 description 1
- 125000002987 valine group Chemical group [H]N([H])C([H])(C(*)=O)C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 235000014101 wine Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
- C11D17/0078—Multilayered tablets
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
- C11D17/0086—Laundry tablets
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
- C11D17/0091—Dishwashing tablets
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
- C11D3/1246—Silicates, e.g. diatomaceous earth
- C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
- C11D3/126—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite in solid compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
- C11D3/1246—Silicates, e.g. diatomaceous earth
- C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
- C11D3/1273—Crystalline layered silicates of type NaMeSixO2x+1YH2O
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3707—Polyethers, e.g. polyalkyleneoxides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
- C11D3/3776—Heterocyclic compounds, e.g. lactam
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3792—Amine oxide containing polymers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38609—Protease or amylase in solid compositions only
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38645—Preparations containing enzymes, e.g. protease or amylase containing cellulase
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/40—Dyes ; Pigments
- C11D3/42—Brightening agents ; Blueing agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
Definitions
- the present invention relates to multi-phase detergent tablets.
- detergent compositions in tablet form are known in the art. It is understood that detergent compositions in tablet form hold several advantages over detergent compositions in particulate form, such as ease of dosing, handling, transportation and storage.
- Detergent tablets are most commonly prepared by pre-mixing components of a detergent composition and forming the pre-mixed detergent components into a tablet using any suitable equipment, preferably a tablet press. Tablets are typically formed by compression of the components of the detergent composition so that the tablets produced are sufficiently robust to be able to withstand handling and transportation without sustaining damage. In addition to being robust, tablets must also dissolve sufficiently fast so that the detergent components are released into the wash water as soon as possible at the beginning of the wash cycle.
- Multi-phase detergent tablets described in the prior art are prepared by compressing a first composition in a tablet press to form a substantially planar first layer. A further detergent composition is then delivered to the tablet press on top of the first layer. This second composition is then compressed to form another substantially planar second layer.
- the first layer is generally subjected to more than one compression as it is also compressed during the compression of the second composition.
- the first and second compression forces are in the same order of magnitude. The Applicant has found that where this is the case, because the compression force must be sufficient to bind the first and second compositions together, the force used in both the first and second compression steps must be in the range of from about 4,000 to about 20,000 kg (assuming a tablet cross-section of about 10 cm 2 ).
- EP-B-0,055,100 describes a lavatory block formed by combining a slow dissolving shaped body with a tablet.
- the lavatory block is designed to be placed in the cistern of a lavatory and dissolves over a period of days, preferably weeks.
- solubility control agents are paradichlorobenzene, waxes, long chain fatty acids and alcohols and esters thereof and fatty alkylamides.
- Detergent tablets for use in laundry or automatic dishwashing must substantially dissolve within one cycle of the washing or dishwashing machine, i.e. within 15 to 120 minutes.
- a multi-phase detergent tablet for use in a washing machine, the tablet comprising: a) a first phase in the form of a shaped body having at least one mould therein; and b) a second phase in the form of a particulate solid compressed within said mould.
- the first phase is a compressed shaped body prepared at an applied compression pressure of at least about 40 kg/ cm , preferably at least about 250 kg/ cm 2 , more preferably at least about 350 kg/cm 2 (3.43 kN/cm 2 ), even more preferably from about 400 to about 2000, and especially from about 600 to about 1200 kg/cm 2 (compression pressure herein is the applied force divided by the cross-sectional area of the tablet in a plane transverse to the applied force - in effect, the transverse cross- sectional area of the die of the rotary press).
- the particulate solid of the second phase (which terminology is intended to include the possibility of multiple 'second' phases, sometimes referred to herein as Optional subsequent phases') be compressed into said mould at an applied compression pressure less than that applied to the first phase and preferably at a compression pressure of less than about 350 kg/cm 2 , preferably in the range from about 40 kg/cm 2 to about 300 kg/cm 2 and more preferably from about 70 to about 270 kg/cm 2 , such tablets being preferred herein from the viewpoint of providing optimum tablet integrity and strength (measured for example by the Child Bite Strength [CBS] test) and product dissolution characteristics.
- CBS Child Bite Strength
- the tablets of the invention preferably have a CBS of at least about 6kg, preferably greater than about 8kg, more preferably greater than about 10kg, especially greater than about 12kg, and more especially greater than about 14kg, CBS being measured per the US Consumer Product Safety Commission Test Specification.
- the compression pressures applied to the first and second phases will generally be in a ratio of at least about 1.2:1, preferably at least about 2:1, more preferably at least about 4:1.
- a multi-phase detergent tablet for use in a washing machine, the tablet comprising: a) a first phase in the form of a compressed shaped body having at least one mould therein, the shaped body being prepared at a compression pressure of at least about 350 kg/cm 2 ; and b) a second phase in the form of a particulate solid compressed within said mould, the second phase being compressed at a pressure of less than about 350 kg/cm 2 .
- the second phase is in the form of a compressed or shaped body adhesively contained, for example by physical or chemical adhesion, within the at least one mould of the first body.
- the first and second phases are in a relatively high weight ratio to one another, for example at least about 6:1, preferably at least about 10:1; also that the tablet composition contain one or more detergent actives (for example enzymes, bleaches, bleach activators, bleach catalysts, surfactants, chelating agents etc) which is predominantly concentrated in the second phase, for example, at least about 50%, preferably at least about 60%, especially about 80% by weight of the active (based on the total weight of the active in tablet) is in the second phase of the tablet.
- detergent actives for example enzymes, bleaches, bleach activators, bleach catalysts, surfactants, chelating agents etc
- compositions are optimum for tablet strength, dissolution, cleaning, and pH regulation characteristics providing, for example, tablet compositions capable of dissolving in the wash liquor so as to deliver at least 50%, preferably at least 60%, and more preferably at least 80% by weight of the detergent active to the wash liquor within 10, 5, 4 or even 3 minutes of the start of the wash process.
- a multi-phase detergent tablet for use in a washing machine, the tablet comprising: a) a first phase in the form of a shaped body having at least one mould therein, and b) a second phase in the form of a particulate solid compressed within said mould , and wherein the tablet comprises at least one detergent active and is formulated such that at least 50%, preferably at least 60%, more preferably at least 80% by weight of the detergent active is delivered to the wash within the first 10 minutes, preferably within the first 5 minutes, and more preferably within the first 3 minutes of the wash process.
- An additional benefit of the invention is the ability to achieve differential dissolution of the phases, such that one phase of the tablet will dissolve significantly before another phase, and may even dissolve essentially completely before the other phase has dissolved. This is particularly valuable for the differential delivery of detergent actives.
- a multi-phase detergent tablet comprising: a) a first phase in the form of a shaped body having at least one mould therein; and b) a second phase in the form of a compressed body adhesively contained within said mould, and wherein the tablet composition comprises one or more detergent actives which is predominantly concentrated in the second phase, and wherein the second phase additionally comprises a disrupting agent.
- a multi-phase detergent tablet comprising: a) a first phase in the form of a shaped body having at least one mould therein; and b) a second phase in the form of a compressed body adhesively contained within said mould, wherein the tablet composition comprises one or more detergent actives which is predominantly concentrated in the second phase, and wherein the second phase additionally comprises a binder.
- the one or more detergent actives are selected from enzymes, bleaches, bleach activators, bleach catalysts, surfactants, chelating agents, crystal growth inhibitors and mixtures thereof, the enzyme actives being particularly preferred for boosting cleaning performance during the very initial cool-water stage of the washing or cleaning operation.
- enzyme detergent actives and especially enzymes and enzyme mixtures comprising one or more enzymes having enhanced or optimum activity in the temperature range from 25 °C to 55°C and at a pH value in the range of 8 to 10 (e.g. Natalase).
- a multi-phase detergent tablet comprising: a) a first phase in the form of a shaped body having at least one mould therein; and b) a second phase in the form of a compressed body adhesively contained within said mould, and wherein the second phase additionally comprises an enzyme.
- the time within which the multi -phase tablet or a phase thereof or a detergent active component dissolves is determined according to DIN 44990 using a dishwashing machine available from Bosch on the normal 65°C washing program with water hardness at 18°H using a minimum of six replicates or a sufficient number to ensure reproducibility.
- the multi-phase detergent tablet of the present invention comprises a first phase, a second and optionally subsequent phases.
- the first phase is in the form of a shaped body of detergent composition comprising one or more detergent components as described below.
- Preferred detergent components include, builder, bleach, enzymes and surfactant.
- the components of the detergent composition are mixed together by, for example admixing dry components or spray ing-on liquid components.
- the components are then formed into a first phase using any suitable equipment, but preferably by compression, for example in a tablet press.
- the first phase can be prepared by extrusion, casting, etc.
- the first phase can take a variety of geometric shapes such as spheres, cubes, etc but preferred embodiments have a generally axially-symmetric form with a generally round, square or rectangular cross-section.
- the first phase is prepared such that it comprises at least one mould in the surface of the shaped body.
- the mould or moulds can also vary in size and shape and in their location, orientation and topology relative to the first phase.
- the mould or moulds can be generally circular, square or oval in cross-section; they can form an internally- closed cavity or recess in the surface of the shaped body, or they can extend between unconnected regions of the body surface (for example axially-opposed facing surfaces) to form one or more topological 'holes' in the shaped body; and they can be axially or otherwise symmetrically-disposed relative to the first phase or they can be asymmetrically disposed.
- the mould is created using a specially designed tablet press wherein the surface of the punch that contacts the detergent composition is shaped such that when it contacts and presses the detergent composition it presses a mould, or multiple moulds into the first phase of the multi -phase detergent tablet.
- the mould will have an inwardly concave or generally concave surface to provide improved adhesion to the second phase.
- the mould can be created by compressing a preformed body of detergent composition disposed annularly around a central dye, thereby forming a shaped body having a mould in the form of a cavity extending axially between opposing surfaces of the body.
- the tablets of the invention also include one or more additional phases prepared from a composition or compositions which comprise one or more detergent components as described below.
- At least one phase preferably takes the form of a particulate solid (which term encompasses powders, granules, agglomerates, and other particulate solids including mixtures thereof with liquid binders, meltable solids, spray-ons, etc) compressed into/within the one or more moulds of the first phase of the detergent tablet such that the second phase itself takes the form of a shaped body.
- a particulate solid which term encompasses powders, granules, agglomerates, and other particulate solids including mixtures thereof with liquid binders, meltable solids, spray-ons, etc
- optionally further phases include one or more compositions in the form a separate layer or layers.
- Preferred detergent components include builders, colourants, binders, surfactants, disrupting agents and enzymes, in particular amylase and protease enzymes.
- the second and optionally subsequent phases comprise a disrupting agent that may be selected from either a disintegrating agent or an effervescent agent.
- Suitable disintegrating agents include agents that swell on contact with water or facilitate water influx and/or efflux by forming channels in the detergent tablet. Any known disintegrating or effervescing agent suitable for use in laundry or dishwashing applications is envisaged for use herein.
- Suitable disintegrating agent include starches (such as natural, modified, and pregelatinized starches, eg those derived from corn, rice and potato starch), starch derivatives such as U- Sperse (tradename), Primojel (tradename) and Explotab (tradename), celluloses, microcrystalline celluloses and cellulose derivatives such as Arbocel (tradename) and Vivapur (tradename) both available from Rettenmaier, Nymcel (tradename) available from Metsa-serla , Avicel (tradename), Lattice NT (tradename) and Hanfloc (tradename), alginates, acetate trihydrate, burkeite, monohydrated carbonate formula Na 2 CO 3 .H 2 O, hydrated STPP with a phase I content of at least about 40% , carboxymethylcellulose (CMC), CMC-based polymers, sodium acetate, aluminium oxide.
- CMC carboxymethylcellulose
- CMC-based polymers sodium acetate, aluminium oxide.
- Suitable effervescing agents are those that produce a gas on contact with water. Suitable effervesing agents may be oxygen, nitrogen dioxide or carbon dioxide evolving species. Examples of preferred effervescent agents may be selected from the group consisting of perborate, percarbonate, carbonate, bicarbonate in combination with carboxylic or other acids such as citric, sulphamic, malic or maleic acid.
- the components of the detergent composition are mixed together by for example admixing dry components and admixing or spray ing-on liquid components.
- the components of the second and optionally subsequent phases are then fed into and retained within the mould provided by the first phase.
- the preferred embodiment of the present invention comprises two phases; a first and a second phase.
- the first phase will normally comprise one mould and the second phase will normally consist of a single detergent active composition.
- the first phase may comprise more than one mould and the second phase may be prepared from more than one detergent active composition.
- the second phase may comprise more than one detergent active composition contained within one mould. It is also envisaged that several detergent active compositions are contained in separate moulds. In this way potentially chemically sensitive detergent components can be separated in order to avoid any loss in performance caused by components reacting together and potentially becoming inactive or exhausted.
- the first, second and/or optionally subsequent phases may comprise a binder.
- the binder is selected from the group consisting of organic polymers, for example polyethylene and/or polypropylene glycols, especially those of molecular weight 4000, 6000 and 9000, paraffins, polyvinyl pyrolindone (PVP), especially PVP of molecular weight 90 000, polyacrylates, sugars and sugar derivatives, starch and starch derivatives, for example hydroxy propyl methyl cellulose (HPMC) and carboxy methyl cellulose (CMC); and inorganic polymers, such as hexametaphosphate.
- PVP polyvinyl pyrolindone
- HPMC hydroxy propyl methyl cellulose
- CMC carboxy methyl cellulose
- inorganic polymers such as hexametaphosphate.
- the binder is valuable both for tablet integrity and to help achieve differential dissolution of the first and second phases as described below.
- the first phase weighs greater than about 3g, preferably greater than about 4g, more preferably greater than about 5g. More preferably the first phase weighs from about lOg to about 30g, even more preferably from about 15g to about 25g and most preferably from about 18g to about 24g.
- the second and optionally subsequent phases weigh less than 4g. More preferably the second and/or optionally subsequent phases weigh between about O.lg and about 3.5g, preferably between about lg and about 3.5g, most preferably from about 1.3g to about 2.5g.
- a barrier layer comprising a barrier layer composition is located between the first and second phase and/or optionally subsequent phases or indeed between the second and optionally subsequent phases.
- the barrier layer composition comprises at least one binder selected from the group as described above.
- the components of the second and optionally subsequent phases are preferably compressed at a very low compression force relative to compression force normally used to prepare tablets.
- a very low compression force is used heat, force or chemically sensitive detergent components can be incorporated into the detergent tablet without sustaining the consequential loss in performance usually encountered when incorporating such components into tablets.
- the second phase or phases can be compressed at the same or higher compression force than the first phase in order to achieve differential dissolution of the phases as described below.
- a further advantage of the present invention is the improved protection of the second phase against damage caused by for example handling and transportation.
- multi-phase detergent tablets have been prepared where the second layer is compressed at a lower compression force than the first layer.
- the second layer of these tablets becomes vulnerable to damage, tending to crumble or chip on contact.
- the lightly compressed phase(s) of the detergent tablets of the present invention however are protected within the mould provided by the first phase of the detergent tablet.
- Yet another advantage of the present invention is the ability to prepare a multi-phase detergent tablet wherein one phase can be designed to dissolve, preferably significantly before another phase.
- the second and optionally subsequent phase(s) dissolves before the first phase.
- the first phase dissolves in from 5 to 20 minutes, more preferably from 10 to 15 minutes and the second and/or optionally subsequent phases dissolve in less than 5 minutes, more preferably less than 4.5 minutes, most preferably less than 4 minutes.
- the second phase can dissolve after the first or other phases, for example, where it is desired to deliver cleaning or rinsing benefits towards the end of the washing operation.
- the time in which the first, second and/or optionally subsequent phase dissolve are independent from each other.
- differential dissolution of the phases is achieved.
- a particular benefit of being able to achieve differential dissolution of the multi -phase detergent tablet is that a component that is chemically inactivated by the presence of another component can be separated into a different phase.
- the component that is inactivated is preferably located in the second and optionally subsequent phase(s).
- Yet another advantage of the present invention is the improved adherence between the phases of the multi-phase tablet. It is believed that the improved adherence is achieved by reducing exposure of the second phase in comparison to multi-phase tablets known in the art, resulting in the tablets of the present invention being less susceptible to fracture along the line of contact between the phases.
- the multi-phase detergent tablets are prepared using any suitable tabletting equipment, e.g., a Courtoy R253. Preferably the tablets are prepared by compression in a tablet press capable of preparing a tablet comprising a mould.
- the first phase is prepared using a specially designed tablet press following the procedure described below. The punch(es) of this tablet press are modified so that the surface of the punch that contacts the detergent composition has a convex surface.
- a first detergent composition is delivered into the die of the tablet press and the punch is lowered to contact and then compress the detergent composition to form a first phase.
- the first detergent composition is compressed using an applied pressure generally of at least about 250 kg/cm 2 , preferably between about 350 and about 2000 kg/cm 2 , more preferably about 500 to about 1500 kg/cm 2 , most preferably about 600 to about 1200 kg/cm 2 .
- the punch is then elevated, exposing the first phase containing a mould.
- a second and optionally subsequent detergent composition(s) is then delivered into the mould.
- the specially designed tablet press punch is then lowered a second time to lightly compress the second and optionally subsequent detergent composition(s) to form the second and optionally subsequent phase(s).
- the optionally subsequent phase is prepared in an optionally subsequent compression step substantially similar to the second compression step described above.
- the second and optionally subsequent detergent composition(s) is compressed at a pressure of preferably less than about 350 kg/cm 2 , more preferably from about 40 to about 300 kg/cm 2 , most preferably from about 70 to about 270 kg/cm 2 .
- the punch is elevated a second time and the multi -phase detergent tablet is ejected from the tablet press.
- the first and second and or optionally subsequent phases of the multi-phase detergent tablet described herein are prepared by compression of one or more compositions comprising detergent active components.
- the compositions used in any of these phases may include a variety of different detergent components including builder compounds, surfactants, enzymes, bleaching agents, alkalinity sources, colourants, perfume, lime soap dispersants, organic polymeric compounds including polymeric dye transfer inhibiting agents, crystal growth inhibitors, heavy metal ion sequestrants, metal ion salts, enzyme stabilisers, corrosion inhibitors, suds suppressers, solvents, fabric softening agents, optical brighteners and hydrotropes.
- Highly preferred detergent components of the first phase include a builder compound, a surfactant, an enzyme and a bleaching agent.
- Highly preferred detergent components of the second phase include builder, enzymes, crystal growth inhibitors and disrupting agents and/or binders
- the tablets of the present invention preferably contain a builder compound, typically present at a level of from 1% to 80% by weight, preferably from 10% to 70% by weight, most preferably from 20% to 60% by weight of the composition of active detergent components.
- Suitable water-soluble builder compounds include the water soluble monomeric polycarboxylates, or their acid forms, homo or copolymeric polycarboxylic acids or their salts in which the polycarboxylic acid comprises at least two carboxylic radicals separated from each other by not more that two carbon atoms, carbonates, bicarbonates, borates, phosphates, and mixtures of any of the foregoing.
- the carboxylate or polycarboxylate builder can be monomeric or oligomeric in type although monomeric polycarboxylates are generally preferred for reasons of cost and performance.
- Suitable carboxylates containing one carboxy group include the water soluble salts of lactic acid, glycolic acid and ether derivatives thereof.
- Polycarboxylates containing two carboxy groups include the water-soluble salts of succinic acid, malonic acid, (ethylenedioxy) diacetic acid, maleic acid, diglycolic acid, tartaric acid, tartronic acid and fumaric acid, as well as the ether carboxylates and the sulfinyl carboxylates.
- Polycarboxylates containing three carboxy groups include, in particular, water-soluble citrates, aconitrates and citraconates as well as succinate derivatives such as the carboxymethyloxysuccinates described in British Patent No.
- Polycarboxylates containing four carboxy groups include oxydisuccinates disclosed in British Patent No. 1,261,829, 1,1,2,2-ethane tetracarboxylates, 1,1, 3, 3 -propane tetracarboxylates and 1 , 1 ,2,3-propane tetracarboxylates.
- Polycarboxylates containing sulfo substituents include the sulfosuccinate derivatives disclosed in British Patent Nos. 1,398,421 and 1,398,422 and in U.S. Patent No. 3,936,448, and the sulfonated pyrolysed citrates described in British Patent No. 1,439,000.
- Alicyclic and heterocyclic polycarboxylates include cyclopentane-cis,cis,cis- tetracarboxylates, cyclopentadienide pentacarboxylates, 2,3,4,5-tetrahydrofuran - cis, cis, cis-tetracarboxylates, 2,5-tetrahydrofuran - cis - dicarboxylates, 2,2,5,5-tetrahydrofuran - tetracarboxylates, 1,2,3 ,4,5, 6-hexane - hexacarboxylates and carboxymethyl derivatives of polyhydric alcohols such as sorbitol, mannitol and xylitol.
- Aromatic polycarboxylates include mellitic acid, pyromellitic acid and the phthalic acid derivatives disclosed in British Patent No. 1 ,425,343.
- the preferred polycarboxylates are hydroxycarboxylates containing up to three carboxy groups per molecule, more particularly citrates.
- the parent acids of the monomeric or oligomeric polycarboxylate chelating agents or mixtures thereof with their salts e.g. citric acid or citrate/citric acid mixtures are also contemplated as useful builder components.
- Borate builders, as well as builders containing borate-forming materials that can produce borate under detergent storage or wash conditions can also be used but are not preferred at wash conditions less that 50°C, especially less than 40°C.
- carbonate builders are the alkaline earth and alkali metal carbonates, including sodium carbonate and sesqui-carbonate and mixtures thereof with ultra-fine calcium carbonate as disclosed in German Patent Application No. 2,321,001 published on November 15, 1973.
- Highly preferred builder compounds for use in the present invention are water-soluble phosphate builders.
- water-soluble phosphate builders are the alkali metal tripolyphosphates, sodium, potassium and ammonium pyrophosphate, sodium and potassium and ammonium pyrophosphate, sodium and potassium orthophosphate, sodium polymeta phosphate in which the degree of polymerisation ranges from 6 to 21, and salts of phytic acid.
- water-soluble phosphate builders are the alkali metal tripolyphosphates, sodium, potassium and ammonium pyrophosphate, sodium and potassium and ammonium pyrophosphate, sodium and potassium orthophosphate, sodium polymeta/phosphate in which the degree of polymerization ranges from 6 to 21, and salts of phytic acid.
- Partially soluble or insoluble builder compound Partially soluble or insoluble builder compound
- the tablets of the present invention may contain a partially soluble or insoluble builder compound.
- Partially soluble and insoluble builder compounds are particularly suitable for use in tablets prepared for use in laundry cleaning methods.
- partially water soluble builders include the crystalline layered silicates as disclosed for example, in EP-A-0164514, DE-A-3417649 and DE-A-3742043. Preferred are the crystalline layered sodium silicates of general formula
- Crystalline layered sodium silicates of this type preferably have a two dimensional 'sheet' structure, such as the so called ⁇ -layered structure, as described in EP 0 164514 and EP 0 293640. Methods for preparation of crystalline layered silicates of this type are disclosed in DE-A-3417649 and DE-A-3742043.
- x in the general formula above has a value of 2,3 or 4 and is preferably 2.
- the most preferred crystalline layered sodium silicate compound has the formula ⁇ - Na2Si2 ⁇ 5, known as NaSKS-6 (trade name), available from Hoechst AG.
- the crystalline layered sodium silicate material is preferably present in granular detergent compositions as a particulate in intimate admixture with a solid, water-soluble ionisable material as described in PCT Patent Application No. WO92/18594.
- the solid, water-soluble ionisable material is selected from organic acids, organic and inorganic acid salts and mixtures thereof, with citric acid being preferred.
- Examples of largely water insoluble builders include the sodium aluminosilicates.
- Suitable aluminosilicates include the aluminosilicate zeolites having the unit cell formula Na z [(AlO2) z (SiO2)y]. XH2O wherein z and y are at least 6; the molar ratio of z to y is from 1.0 to 0.5 and x is at least 5, preferably from 7.5 to 276, more preferably from 10 to 264.
- the aluminosilicate material are in hydrated form and are preferably crystalline, containing from 10% to 28%, more preferably from 18% to 22% water in bound form.
- the aluminosilicate zeolites can be naturally occurring materials, but are preferably synthetically derived. Synthetic crystalline aluminosilicate ion exchange materials are available under the designations Zeolite A, Zeolite B, Zeolite P, Zeolite X, Zeolite HS and mixtures thereof.
- a preferred method of synthesizing aluminosilicate zeolites is that described by Schoeman et al (published in Zeolite (1994) 14(2), 110-116), in which the author describes a method of preparing colloidal aluminosilicate zeolites.
- the colloidal aluminosilicate zeolite particles should preferably be such that no more than 5% of the particles are of size greater than l ⁇ m in diameter and not more than 5% of particles are of size less then 0.05 ⁇ m in diameter.
- the aluminosilicate zeolite particles have an average particle size diameter of between 0.01 ⁇ m and l ⁇ m, more preferably between 0.05 ⁇ m and 0.9 ⁇ m, most preferably between O.l ⁇ m and 0.6 ⁇ m.
- Zeolite A has the formula
- Zeolite X has the formula Nagg [(Al ⁇ 2)86( siO 2)l06j- 276 H 2°- Zeolite MAP, as disclosed in EP-B-384,070 is a preferred zeolite builder herein.
- Preferred aluminosilicate zeolites are the colloidal aluminosilicate zeolites.
- colloidal aluminosilicate zeolites especially colloidal zeolite A, provide enhanced builder performance in terms of providing improved stain removal.
- Enhanced builder performance is also seen in terms of reduced fabric encrustation and improved fabric whiteness maintenance; problems believed to be associated with poorly built detergent compositions.
- mixed aluminosilicate zeolite detergent compositions comprising colloidal zeolite A and colloidal zeolite Y provide equal calcium ion sequestration performance versus an equal weight of commercially available zeolite A.
- Another surprising finding is that mixed aluminosilicate zeolite detergent compositions, described above, provide improved magnesium ion sequestration performance versus an equal weight of commercially available zeolite A.
- Surfactants are preferred detergent active components of the compositions described herein. Suitable surfactants are selected from anionic, cationic, nonionic ampholytic and zwitterionic surfactants and mixtures thereof. Automatic dishwashing machine products should be low foaming in character and thus the foaming of the surfactant system for use in dishwashing methods must be suppressed or more preferably be low foaming, typically nonionic in character. Sudsing caused by surfactant systems used in laundry cleaning methods need not be suppressed to the same extent as is necessary for dishwashing. The surfactant is typically present at a level of from 0.2% to 30% by weight, more preferably from 0.5% to 10% by weight, most preferably from 1% to 5% by weight of the composition of active detergent components.
- nonionic surfactants useful for detersive purposes can be included in the detergent tablet.
- Preferred, non-limiting classes of useful nonionic surfactants are listed below.
- alkyl ethoxylate condensation products of aliphatic alcohols with from 1 to 25 moles of ethylene oxide are suitable for use herein.
- the alkyl chain of the aliphatic alcohol can either be straight or branched, primary or secondary, and generally contains from 6 to 22 carbon atoms.
- Particularly preferred are the condensation products of alcohols having an alkyl group containing from 8 to 20 carbon atoms with from 2 to 10 moles of ethylene oxide per mole of alcohol.
- a suitable endcapped alkyl alkoxylate surfactant is the epoxy-capped poly(oxyalkylated) alcohols represented by the formula:
- Ri is a linear or branched, aliphatic hydrocarbon radical having from 4 to 18 carbon atoms
- R2 is a linear or branched aliphatic hydrocarbon radical having from 2 to
- x is an integer having an average value of from 0.5 to 1.5, more preferably 1 ; and y is an integer having a value of at least 15, more preferably at least 20.
- the surfactant of formula I at least 10 carbon atoms in the terminal epoxide unit [CH2CH(OH)R2].
- Suitable surfactants of formula I are Olin Corporation's POLY-TERGENT® SLF-18B nonionic surfactants, as described, for example, in WO 94/22800, published October 13, 1994 by Olin Corporation.
- Ether-capped poly(oxyalkylated alcohols Preferred surfactants for use herein include ether-capped poly(oxyalkylated) alcohols having the formula:
- R! and R 2 are linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having from 1 to 30 carbon atoms;
- R- is H, or a linear aliphatic hydrocarbon radical having from 1 to 4 carbon atoms;
- x is an integer having an average value from 1 to 30, wherein when x is 2 or greater R- may be the same or different and k and j are integers having an average value of from 1 to 12, and more preferably 1 to 5.
- R! and R 2 are preferably linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having from 6 to 22 carbon atoms with 8 to 18 carbon atoms being most preferred. H or a linear aliphatic hydrocarbon radical having from 1 to
- x is an integer having an average value of from 1 to 20, more preferably from 6 to 15.
- R- when, in the preferred embodiments, and x is greater than 2, R- may be the same or different. That is, R ⁇ may vary between any of the alklyeneoxy units as described above. For instance, if x is 3, R ⁇ may be be selected to form ethlyeneoxy(EO) or propyleneoxy(PO) and may vary in order of (EO)(PO)(EO), (EO)(EO)(PO); (EO)(EO)(EO); (PO)(EO)(PO); (PO)(PO)(EO) and (PO)(PO)(PO).
- the integer three is chosen for example only and the variation may be much larger with a higher integer value for x and include, for example, mulitple (EO) units and a much small number of (PO) units.
- Particularly preferred surfactants as described above include those that have a low cloud point of less than 20°C. These low cloud point surfactants may then be employed in conjunction with a high cloud point surfactant as described in detail below for superior grease cleaning benefits.
- ether-capped poly(oxyalkylated) alcohol surfactants are those wherein k is 1 and j is 1 so that the surfactants have the formula:
- Rl, R 2 and R ⁇ are defined as above and x is an integer with an average value of from 1 to 30, preferably from 1 to 20, and even more preferably from 6 to 18.
- Most preferred are surfactants wherein Rl and R 2 range from 9 to 14, R- is H forming ethyleneoxy and x ranges from 6 to 15.
- the ether-capped poly(oxyalkylated) alcohol surfactants comprise three general components, namely a linear or branched alcohol, an alkylene oxide and an alkyl ether end cap.
- the alkyl ether end cap and the alcohol serve as a hydrophobic, oil-soluble portion of the molecule while the alkylene oxide group forms the hydrophilic, water- soluble portion of the molecule.
- surfactants exhibit significant improvements in spotting and filming characteristics and removal of greasy soils, when used in conjunction with high cloud point surfactants, relative to conventional surfactants.
- the ether-capped poly(oxyalkylene) alcohol surfactants of the present invention may be produced by reacting an aliphatic alcohol with an epoxide to form an ether which is then reacted with a base to form a second epoxide. The second epoxide is then reacted with an alkoxylated alcohol to form the novel compounds of the present invention.
- Examples of methods of preparing the ether-capped poly(oxyalkylated) alcohol surfactants are described below: Preparation of C ⁇ 2/ ⁇ 4 alkyl glycidyl ether
- a C12/14 fatty alcohol (100.00 g, 0.515 mol.) and tin (IV) chloride (0.58 g, 2.23 mmol, available from Aldrich) are combined in a 500 mL three-necked round-bottomed flask fitted with a condenser, argon inlet, addition funnel, magnetic stirrer and internal temperature probe. The mixture is heated to 60 °C. Epichlorhydrin (47.70 g, 0.515 mol, available from Aldrich) is added dropwise so as to keep the temperature between 60-65 ° C. After stirring an additional hour at 60 °C, the mixture is cooled to room temperature.
- the mixture is treated with a 50% solution of sodium hydroxide (61.80 g, 0.773 mol, 50%) while being stirred mechanically. After addition is completed, the mixture is heated to 90 °C for 1.5 h, cooled, and filtered with the aid of ethanol. The filtrate is separated and the organic phase is washed with water (100 mL), dried over MgSO_ ⁇ , filtered, and concentrated. Distillation of the oil at 100-120 °C (0.1 mm Hg) providing the glycidyl ether as an oil.
- Neodol® 91-8 (20.60 g, 0.0393 mol ethoxylated alcohol available from the Shell chemical Co.) and tin (IV) chloride (0.58 g, 2.23 mmol) are combined in a 250 mL three- necked round-bottomed flask fitted with a condenser, argon inlet, addition funnel, magnetic stirrer and internal temperature probe. The mixture is heated to 60 °C at which point C12/14 alkyl glycidyl ether (11.00 g, 0.0393 mol) is added dropwise over 15 min.
- the mixture After stirring for 18 h at 60 °C, the mixture is cooled to room temperature and dissolved in an equal portion of dichloromethane. The solution is passed through a 1 inch pad of silica gel while eluting with dichloromethane. The filtrate is concentrated by rotary evaporation and then stripped in a kugelrohr oven (100 °C, 0.5 mm Hg) to yield the surfactant as an oil.
- the ethoxylated C ⁇ -Cjg fatty alcohols and C6-C1 g mixed ethoxylated/propoxylated fatty alcohols are suitable surfactants for use herein, particularly where water soluble.
- the ethoxylated fatty alcohols are the Ci Q-Cj ethoxylated fatty alcohols with a degree of ethoxylation of from 3 to 50, most preferably these are the C12-C1 g ethoxylated fatty alcohols with a degree of ethoxylation from 3 to 40.
- the mixed ethoxylated/propoxylated fatty alcohols have an alkyl chain length of from 10 to 18 carbon atoms, a degree of ethoxylation of from 3 to 30 and a degree of propoxylation of from 1 to 10.
- the condensation products of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol are suitable for use herein.
- the hydrophobic portion of these compounds preferably has a molecular weight of from 1500 to 1800 and exhibits water insolubility.
- Examples of compounds of this type include certain of the commercially-available PluronicTM surfactants, marketed by BASF.
- condensation products of ethylene oxide with the product resulting from the reaction of propylene oxide and ethylenediamine are suitable for use herein.
- the hydrophobic moiety of these products consists of the reaction product of ethylenediamine and excess propylene oxide, and generally has a molecular weight of from 2500 to 3000.
- this type of nonionic surfactant include certain of the commercially available TetronicTM compounds, marketed by BASF.
- the detergent tablet comprises a mixed nonionic surfactant system comprising at least one low cloud point nonionic surfactant and at least one high cloud point nonionic surfactant.
- Cloud point is a well known property of nonionic surfactants which is the result of the surfactant becoming less soluble with increasing temperature, the temperature at which the appearance of a second phase is observable is referred to as the “cloud point” (See Kirk Othmer's Encyclopedia of Chemical Technology, 3 rd Ed. Vol. 22, pp. 360-379).
- a "low cloud point" nonionic surfactant is defined as a nonionic surfactant system ingredient having a cloud point of less than 30°C, preferably less than 20°C, and most preferably less than 10°C.
- Typical low cloud point nonionic surfactants include nonionic alkoxylated surfactants, especially ethoxylates derived from primary alcohol, and polyoxypropylene/polyoxyethylene/polyoxypropylene (PO/EO/PO) reverse block polymers.
- low cloud point nonionic surfactants include, for example, ethoxylated-propoxylated alcohol (e.g., Olin Corporation's Poly-Tergent® SLF18), epoxy-capped poly(oxyalkylated) alcohols (e.g., Olin Corporation's Poly-Tergent® SLF18B series of nonionics, as described, for example, in WO 94/22800, published October 13, 1994 by Olin Corporation)and the ether-capped poly(oxyalkylated) alcohol surfactants.
- ethoxylated-propoxylated alcohol e.g., Olin Corporation's Poly-Tergent® SLF18
- epoxy-capped poly(oxyalkylated) alcohols e.g., Olin Corporation's Poly-Tergent® SLF18B series of nonionics, as described, for example, in WO 94/22800, published October 13, 1994 by Olin Corporation
- ether-capped poly(oxyalkylated) alcohol surfactants ethoxyl
- Nonionic surfactants can optionally contain propylene oxide in an amount up to 15% by weight.
- Other preferred nonionic surfactants can be prepared by the processes described in U.S. Patent 4,223,163, issued September 16, 1980, Builloty, incorporated herein by reference.
- Low cloud point nonionic surfactants additionally comprise a polyoxyethylene, polyoxypropylene block polymeric compound.
- Block polyoxyethylene- polyoxypropylene polymeric compounds include those based on ethylene glycol, propylene glycol, glycerol, trimethylolpropane and ethylenediamine as initiator reactive hydrogen compound.
- Certain of the block polymer surfactant compounds designated PLURONIC®, REVERSED PLURONIC®, and TETRONIC® by the BASF-Wyandotte Corp., Wyandotte, Michigan, are suitable in ADD compositions of the invention.
- Preferred examples include REVERSED PLURONIC® 25R2 and TETRONIC® 702, Such surfactants are typically useful herein as low cloud point nonionic surfactants.
- a "high cloud point" nonionic surfactant is defined as a nonionic surfactant system ingredient having a cloud point of greater than 40°C, preferably greater than 50°C, and more preferably greater than 60°C.
- the nonionic surfactant system comprises an ethoxylated surfactant derived from the reaction of a monohydroxy alcohol or alkylphenol containing from 8 to 20 carbon atoms, with from 6 to 15 moles of ethylene oxide per mole of alcohol or alkyl phenol on an average basis.
- Such high cloud point nonionic surfactants include, for example, Tergitol 15S9 (supplied by Union Carbide), Rhodasurf TMD 8.5 (supplied by Rhone Poulenc), and Neodol 91-8 (supplied by Shell).
- the high cloud point nonionic surfactant further have a hydrophile-lipophile balance ("HLB"; see Kirk Othmer hereinbefore) value within the range of from 9 to 15, preferably 11 to 15.
- HLB hydrophile-lipophile balance
- Such materials include, for example, Tergitol 15S9 (supplied by Union Carbide), Rhodasurf TMD 8.5 (supplied by Rhone Poulenc), and Neodol 91-8 (supplied by Shell).
- high cloud point nonionic surfactant is derived from a straight or preferably branched chain or secondary fatty alcohol containing from 6 to 20 carbon atoms (Cg-C20 alcohol), including secondary alcohols and branched chain primary alcohols.
- high cloud point nonionic surfactants are branched or secondary alcohol ethoxylates, more preferably mixed C9/11 or CI 1/15 branched alcohol ethoxylates, condensed with an average of from 6 to 15 moles, preferably from 6 to 12 moles, and most preferably from 6 to 9 moles of ethylene oxide per mole of alcohol.
- the ethoxylated nonionic surfactant so derived has a narrow ethoxylate distribution relative to the average.
- anionic surfactants useful for detersive purposes are suitable. These can include salts (including, for example, sodium, potassium, ammonium, and substituted ammonium salts such as mono-, di- and triethanolamine salts) of the anionic sulfate, sulfonate, carboxylate and sarcosinate surfactants. Anionic sulfate surfactants are preferred.
- anionic surfactants include the isethionates such as the acyl isethionates, N-acyl taurates, fatty acid amides of methyl tauride, alkyl succinates and sulfosuccinates, monoesters of sulfosuccinate (especially saturated and unsaturated C ⁇ -C, ⁇ monoesters) diesters of sulfosuccinate (especially saturated and unsaturated Cg-C, . diesters), N-acyl sarcosinates.
- Resin acids and hydrogenated resin acids are also suitable, such as rosin, hydrogenated rosin, and resin acids and hydrogenated resin acids present in or derived from tallow oil.
- Anionic sulfate surfactants suitable for use herein include the linear and branched primary and secondary alkyl sulfates, alkyl ethoxysulfates, fatty oleoyl glycerol sulfates, alkyl phenol ethylene oxide ether sulfates, the C5-C17 acyl-N-(C]-C4 alkyl) and -N-(C ⁇ -
- Alkyl sulfate surfactants are preferably selected from the linear and branched primary C10-C18 alkyl sulfates, more preferably the C ⁇ ⁇ -C ⁇ 5 branched chain alkyl sulfates and the C12-C14 linear chain alkyl sulfates.
- Alkyl ethoxysulfate surfactants are preferably selected from the group consisting of the Ci Q-CI g alkyl sulfates which have been ethoxylated with from 0.5 to 20 moles of ethylene oxide per molecule.
- the alkyl ethoxysulfate surfactant is a Ci ]-C ⁇ g, most preferably C ⁇ ⁇ -C ⁇ 5 alkyl sulfate which has been ethoxylated with from 0.5 to 7, preferably from 1 to 5, moles of ethylene oxide per molecule.
- a particularly preferred aspect of the invention employs mixtures of the preferred alkyl sulfate and alkyl ethoxysulfate surfactants. Such mixtures have been disclosed in PCT Patent Application No. WO 93/18124.
- Anionic sulfonate surfactant Anionic sulfonate surfactant
- Anionic sulfonate surfactants suitable for use herein include the salts of C5-C20 linear alkylbenzene sulfonates, alkyl ester sulfonates, Cg-C22 primary or secondary alkane sulfonates, C6-C24 olefin sulfonates, sulfonated polycarboxylic acids, alkyl glycerol sulfonates, fatty acyl glycerol sulfonates, fatty oleyl glycerol sulfonates, and any mixtures thereof.
- Suitable anionic carboxylate surfactants include the alkyl ethoxy carboxylates, the alkyl polyethoxy polycarboxylate surfactants and the soaps ('alkyl carboxyls'), especially certain secondary soaps as described herein.
- Suitable alkyl ethoxy carboxylates include those with the formula RO(CH2CH2 ⁇ ) x
- Suitable alkyl polyethoxy polycarboxylate surfactants include those having the formula RO-(CHR ⁇ -CHR2-O)-R3 wherein R is a C6 to Cjg alkyl group, x is from 1 to 25, R ⁇ and R2 are selected from the group consisting of hydrogen, methyl acid radical, succinic acid radical, hydroxysuccinic acid radical, and mixtures thereof, and R3 is selected from the group consisting of hydrogen, substituted or unsubstituted hydrocarbon having between 1 and 8 carbon atoms, and mixtures thereof.
- Suitable soap surfactants include the secondary soap surfactants which contain a carboxyl unit connected to a secondary carbon.
- Preferred secondary soap surfactants for use herein are water-soluble members selected from the group consisting of the water- soluble salts of 2-methyl-l-undecanoic acid, 2-ethyl-l-decanoic acid, 2-propyl- 1- nonanoic acid, 2-butyl-l-octanoic acid and 2-pentyl-l-heptanoic acid. Certain soaps may also be included as suds suppressors.
- alkali metal sarcosinates of formula R-CON (R1) CH2 COOM, wherein R is a C5-C17 linear or branched alkyl or alkenyl group, R! is a Ci -C4 alkyl group and M is an alkali metal ion.
- R is a C5-C17 linear or branched alkyl or alkenyl group
- R! is a Ci -C4 alkyl group
- M is an alkali metal ion.
- Suitable amphoteric surfactants for use herein include the amine oxide surfactants and the alkyl amphocarboxylic acids.
- Suitable amine oxides include those compounds having the formula R3(OR4) ⁇ N ⁇ (R5)2 wherein R-* is selected from an alkyl, hydroxyalkyl, acylamidopropoyl and alkyl phenyl group, or mixtures thereof, containing from 8 to 26 carbon atoms; R4 is an alkylene or hydroxyalkylene group containing from 2 to 3 carbon atoms, or mixtures thereof; x is from 0 to 5, preferably from 0 to 3; and each R ⁇ is an alkyl or hydroxyalkyl group containing from 1 to 3, or a polyethylene oxide group containing from 1 to 3 ethylene oxide groups.
- Preferred are C ⁇ Q-C ⁇ ⁇ alkyl dimethylamine oxide, and C I Q-18 acylamido alkyl dimethylamine oxide.
- a suitable example of an alkyl aphodicarboxylic acid is Miranol(TM) C2M Cone, manufactured by Miranol, Inc., Dayton, NJ.
- Zwitterionic surfactants can also be incorporated into the detergent compositions hereof. These surfactants can be broadly described as derivatives of secondary and tertiary amines, derivatives of heterocyclic secondary and tertiary amines, or derivatives of quaternary ammonium, quaternary phosphonium or tertiary sulfonium compounds. Betaine and sultaine surfactants are exemplary zwitterionic surfactants for use herein.
- Suitable betaines are those compounds having the formula R(R')2N + R2cOO ⁇ wherein R is a Cg-Ci g hydrocarbyl group, each R! is typically C1-C3 alkyl, and R 2 is a C1 -C5 hydrocarbyl group.
- Preferred betaines are C ⁇ . i dimethyl-ammonio hexanoate and the Ci o-lg acylamidopropane (or ethane) dimethyl (or diethyl) betaines.
- Complex betaine surfactants are also suitable for use herein.
- Cationic ester surfactants used in this invention are preferably water dispersible compound having surfactant properties comprising at least one ester (i.e. -COO-) linkage and at least one cationically charged group.
- suitable cationic ester surfactants including choline ester surfactants, have for example been disclosed in US Patents No.s 4228042, 4239660 and 4260529.
- Suitable cationic surfactants include the quaternary ammonium surfactants selected from mono C6-C16, preferably Cg-Cj o N-alkyl or alkenyl ammonium surfactants wherein the remaining N positions are substituted by methyl, hydroxyethyl or hydroxypropyl groups.
- Enzymes are preferred detergent components of the first phase and more particularly the second and/or optionally further phases.
- said enzymes are selected from the group consisting of cellulases, hemicellulases, peroxidases, proteases, gluco- amylases, amylases, xylanases, Upases, phospholipases, esterases, cutinases, pectinases, keratanases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, ⁇ -glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase or mixtures thereof.
- Preferred enzymes include protease, amylase, lipase, peroxidases, cutinase and/or cellulase in conjunction with one or more plant cell wall degrading enzymes.
- the cellulases usable in the present invention include both bacterial or fungal cellulase. Preferably, they will have a pH optimum of between 5 and 12 and an activity above 50 CEVU (Cellulose Viscosity Unit).
- CEVU Cellulose Viscosity Unit
- Suitable cellulases are disclosed in U.S. Patent 4,435,307, Barbesgoard et al, J61078384 and WO96/02653 which disclose fungal cellulases produced respectively from Humicola insolens, Trichoderma, Thielavia and Sporotrichum.
- EP 739 982 describes cellulases isolated from novel Bacillus species. Suitable cellulases are also disclosed in GB-A-2.075.028; GB-A-2.095.275; DE-OS- 2.247.832 and WO95/26398.
- cellulases examples include cellulases produced by a strain of Humicola insolens (Humicola grisea var. thermoidea), particularly the Humicola strain DSM 1800.
- Other suitable cellulases are cellulases originated from Humicola insolens having a molecular weight of 50KDa, an isoelectric point of 5.5 and containing 415 amino acids; and a ⁇ 43kD endoglucanase derived from Humicola insolens, DSM 1800, exhibiting cellulase activity; a preferred endoglucanase component has the amino acid sequence disclosed in PCT Patent Application No. WO 91/17243.
- suitable cellulases are the EGIII cellulases from Trichoderma longibrachiatum described in WO94/21801, Genencor, published September 29, 1994. Especially suitable cellulases are the cellulases having color care benefits. Examples of such cellulases are cellulases described in European patent application No. 91202879.2, filed November 6, 1991 (Novo). Carezyme and Celluzyme (Novo Nordisk A/S) are especially useful. See also WO91/17244 and WO91/21801. Other suitable cellulases for fabric care and/or cleaning properties are described in WO96/34092, WO96/17994 and WO95/24471.
- Said cellulases are normally incorporated in the detergent composition at levels from 0.0001% to 2% of active enzyme by weight of the detergent composition.
- Peroxidase enzymes are used in combination with oxygen sources, e.g. percarbonate, perborate, persulfate, hydrogen peroxide, etc. They are used for "solution bleaching", i.e. to prevent transfer of dyes or pigments removed from substrates during wash operations to other substrates in the wash solution.
- Peroxidase enzymes are known in the art, and include, for example, horseradish peroxidase, ligninase and haloperoxidase such as chloro- and bromo-peroxidase.
- Peroxidase-containing detergent compositions are disclosed, for example, in PCT International Application WO 89/099813, WO89/09813 and in European Patent application EP No. 91202882.6, filed on November 6, 1991 and EP No. 96870013.8, filed February 20, 1996. Also suitable is the laccase enzyme.
- Preferred enhancers are substitued phenthiazine and phenoxasine 10- Phenothiazinepropionicacid (PPT), 10-ethylphenothiazine-4-carboxylic acid (EPC), 10- phenoxazinepropionic acid (POP) and 10-methylphenoxazine (described in WO 94/12621) and substitued syringates (C3-C5 substitued alkyl syringates) and phenols.
- Sodium percarbonate or perborate are preferred sources of hydrogen peroxide.
- Said cellulases and/or peroxidases are normally incorporated in the detergent composition at levels from 0.0001% to 2% of active enzyme by weight of the detergent composition.
- Suitable lipase enzymes for detergent usage include those produced by microorganisms of the Pseudomonas group, such as Pseudomonas stutzeri ATCC 19.154, as disclosed in British Patent 1,372,034.
- Suitable lipases include those which show a positive immunological cross-reaction with the antibody of the lipase, produced by the microorganism Pseudomonas fluorescent IAM 1057. This lipase is available from Amano Pharmaceutical Co. Ltd., Nagoya, Japan, under the trade name Lipase P "Amano,” hereinafter referred to as "Amano-P".
- lipases include Amano-CES, lipases ex Chromobacter viscosum, e.g. Chromobacter viscosum var. lipolyticum NRRLB 3673 from Toyo Jozo Co., Tagata, Japan; Chromobacter viscosum lipases from U.S. Biochemical Corp., U.S.A. and Disoynth Co., The Netherlands, and lipases ex Pseudomonas gladioli.
- lipases such as Ml Lipase ⁇ - an " Lipomax ⁇ (Gist-Brocades) and Lipolase ⁇ and Lipolase
- UltraR(Novo) which have found to be very effective when used in combination with the compositions of the present invention.
- lipolytic enzymes described in EP 258 068, WO 92/05249 and WO 95/22615 by Novo Nordisk and in WO 94/03578, WO 95/35381 and WO 96/00292 by Unilever.
- cutinases [EC 3.1.1.50] which can be considered as a special kind of lipase, namely lipases which do not require interfacial activation. Addition of cutinases to detergent compositions have been described in e.g. WO-A-88/09367 (Genencor); WO 90/09446 (Plant Genetic System) and WO 94/14963 and WO 94/14964 (Unilever).
- the lipases and/or cutinases are normally incorporated in the detergent composition at levels from 0.0001% to 2% of active enzyme by weight of the detergent composition.
- Suitable proteases are the subtilisins which are obtained from particular strains of B. subtilis and B. licheniformis (subtilisin BPN and BPN').
- One suitable protease is obtained from a strain of Bacillus, having maximum activity throughout the pH range of 8-12, developed and sold as ESPERASE® by Novo Industries A/S of Denmark, hereinafter "Novo". The preparation of this enzyme and analogous enzymes is described in GB 1,243,784 to Novo.
- proteases include KANNASE®, ALCALASE®, DURAZYM® and SAVINASE® from Novo and MAXATASE®, MAXACAL®, PROPERASE® and MAXAPEM® (protein engineered Maxacal) from Gist-Brocades.
- proteases also encompass modified bacterial serine proteases, such as those described in European Patent Application Serial Number 87 303761.8, filed April 28, 1987 (particularly pages 17, 24 and 98), and which is called herein "Protease B", and in European Patent Application 199,404, Venegas, published October 29, 1986, which refers to a modified bacterial serine protealytic enzyme which is called "Protease A" herein.
- Protease C is a variant of an alkaline serine protease from Bacillus in which lysine replaced arginine at position 27, tyrosine replaced valine at position 104, serine replaced asparagine at position 123, and alanine replaced threonine at position 274.
- Protease C is described in EP 90915958:4, corresponding to WO 91/06637, Published May 16, 1991. Genetically modified variants, particularly of Protease C, are also included herein.
- a preferred protease referred to as "Protease D” is a carbonyl hydrolase variant having an amino acid sequence not found in nature, which is derived from a precursor carbonyl hydrolase by substituting a different amino acid for a plurality of amino acid residues at a position in said carbonyl hydrolase equivalent to position +76, preferably also in combination with one or more amino acid residue positions equivalent to those selected from the group consisting of +99, +101, +103, +104, +107, +123.
- proteases described in patent applications EP 251 446 and WO 91/06637, protease BLAP® described in WO91/02792 and their variants described in WO 95/23221.
- protease from Bacillus sp. NCIMB 40338 described in WO 93/18140 A to Novo.
- Enzymatic detergents comprising protease, one or more other enzymes, and a reversible protease inhibitor are described in WO 92/03529 A to Novo.
- a protease having decreased adsorption and increased hydrolysis is available as described in WO 95/07791 to Procter & Gamble.
- a recombinant trypsin-like protease for detergents suitable herein is described in WO 94/25583 to Novo.
- Other suitable proteases are described in EP 516 200 by Unilever.
- protease enzymes which are a carbonyl hydrolase variant having an amino acid sequence not found in nature, which is derived by replacement of a plurality of amino acid residues of a precursor carbonyl hydrolase with different amino acids, wherein said plurality of amino acid residues replaced in the precursor enzyme correspond to position +210 in combination with one or more of the following residues: +33, +62, +67, +76, +100, +101, +103, +104, +107, +128, +129, +130, +132, +135, +156, +158, +164, +166, +167, +170, +209, +215, +217, +218 and +222, where the numbered positions correspond to naturally-occurring subtilisin from Bacillus amyloliquefaciens or to equivalent amino acid residues in other carbonyl hydrolases or subtilisins (such as Bacillus lentus subtilisin).
- Preferred enzymes of this type include those having position changes +210,
- the proteolytic enzymes are incorporated in the detergent compositions of the present invention a level of from 0.0001% to 2%, preferably from 0.001% to 0.2%, more preferably from 0.005% to 0.1% pure enzyme by weight of the composition.
- Amylases ( ⁇ and/or ⁇ ) can be included for removal of carbohydrate-based stains.
- WO94/02597 Novo Nordisk A/S published February 03, 1994, describes cleaning compositions which incorporate mutant amylases. See also WO95/10603, Novo Nordisk A/S, published April 20, 1995.
- Other amylases known for use in cleaning compositions include both ⁇ - and ⁇ -amylases.
- ⁇ -Amylases are known in the art and include those disclosed in US Pat. no.
- amylases are stability-enhanced amylases described in WO94/18314, published August 18, 1994 and WO96/05295, Genencor, published February 22, 1996 and amylase variants having additional modification in the immediate parent available from Novo Nordisk A/S, disclosed in WO 95/10603, published April 95. Also suitable are amylases described in EP 277 216, WO95/26397 and WO96/23873 (all by Novo Nordisk).
- Examples of commercial ⁇ -amylases products are Purafect Ox Am® from Genencor and
- WO95/26397 describes other suitable amylases : ⁇ -amylases characterised by having a specific activity at least 25% higher than the specific activity of Termamyl® at a temperature range of 25°C to 55°C and at a pH value in the range of 8 to 10, measured by the Phadebas® ⁇ -amylase activity assay. Suitable are variants of the above enzymes, described in WO96/23873 (Novo Nordisk). Other amylolytic enzymes with improved properties with respect to the activity level and the combination of thermostability and a higher activity level are described in WO95/35382.
- Preferred amylase enzymes include those described in WO95/26397 and in co-pending application by Novo Nordisk PCT/DK96/00056.
- the amylolytic enzymes are incorporated in the detergent compositions of the present invention a level of from 0.0001% to 2%, preferably from 0.00018% to 0.06%, more preferably from 0.00024% to 0.048% pure enzyme by weight of the composition
- detergent tablets of the present invention comprise amylase enzymes, particularly those described in WO95/26397 and co-pending application by Novo Nordisk PCT/DK96/00056 in combination with a complementary amylase.
- complementary it is meant the addition of one or more amylase suitable for detergency purposes.
- Examples of complementary amylases ( ⁇ and/or ⁇ ) are described below.
- WO94/02597 and WO95/10603, Novo Nordisk A/S describe cleaning compositions which incorporate mutant amylases.
- Other amylases known for use in cleaning compositions include both ⁇ - and ⁇ -amylases.
- ⁇ -Amylases are known in the art and include those disclosed in US Pat. no. 5,003,257; EP 252,666; WO/91/00353; FR 2,676,456; EP 285,123; EP 525,610; EP 368,341; and British Patent specification no. 1,296,839 (Novo).
- amylases are stability-enhanced amylases described in WO94/18314, and WO96/05295, Genencor and amylase variants having additional modification in the immediate parent available from Novo Nordisk A/S, disclosed in WO 95/10603. Also suitable are amylases described in EP 277 216 (Novo Nordisk). Examples of commercial ⁇ -amylases products are Purafect Ox Am® from Genencor and
- Termamyl®, Ban® ,Fungamyl® and Duramyl® all available from Novo Nordisk A S Denmark.
- WO95/26397 describes other suitable amylases : ⁇ -amylases characterised by having a specific activity at least 25% higher than the specific activity of Termamyl® at a temperature range of 25°C to 55°C and at a pH value in the range of 8 to 10, measured by the Phadebas® ⁇ -amylase activity assay. Suitable are variants of the above enzymes, described in WO96/23873 (Novo Nordisk). Other amylolytic enzymes with improved properties with respect to the activity level and the combination of thermostability and a higher activity level are described in WO95/35382.
- Preferred complementary amylases for the present invention are the amylases sold under the tradename Purafect Ox Am ⁇ described in WO 94/18314, WO96/05295 sold by Genencor; Termamyl®, Fungamyl®, Ban® Natalase and Duramyl®, all available from Novo Nordisk A/S and Maxamyl® by Gist-Brocades.
- Said complementary amylase is generally incorporated in the detergent compositions of the present invention a level of from 0.0001% to 2%, preferably from 0.00018% to 0.06%, more preferably from 0.00024% to 0.048% pure enzyme by weight of the composition.
- a weight of pure enzyme ratio of specific amylase to the complementary amylase is comprised between 9:1 to 1 :9, more preferably between 4:1 to 1 :4, and most preferably between 2:1 and 1 :2.
- the above-mentioned enzymes may be of any suitable origin, such as vegetable, animal, bacterial, fungal and yeast origin. Origin can further be mesophilic or extremophilic (psychrophilic, psychrotrophic, thermophilic, barophilic, alkalophilic, acidophilic, halophilic, etc.). Purified or non-purified forms of these enzymes may be used. Also included by definition, are mutants of native enzymes. Mutants can be obtained e.g. by protein and/or genetic engineering, chemical and/or physical modifications of native enzymes. Common practice as well is the expression of the enzyme via host organisms in which the genetic material responsible for the production of the enzyme has been cloned.
- Said enzymes are normally incorporated in the detergent composition at levels from 0.0001% to 2% of active enzyme by weight of the detergent composition.
- the enzymes can be added as separate single ingredients (prills, granulates, stabilized liquids, etc... containing one enzyme ) or as mixtures of two or more enzymes ( e.g. cogranulates ).
- enzyme oxidation scavengers which are described in Copending European Patent application 92870018.6 filed on January 31, 1992.
- enzyme oxidation scavengers are ethoxylated tetraethylene polyamines.
- a range of enzyme materials and means for their incorporation into synthetic detergent compositions is also disclosed in WO 9307263 A and WO 9307260 A to Genencor International, WO 8908694 A to Novo, and U.S. 3,553,139, January 5, 1971 to McCarty et al. Enzymes are further disclosed in U.S. 4,101,457, Place et al, July 18, 1978, and in U.S. 4,507,219, Hughes, March 26, 1985.
- Enzyme materials useful for liquid detergent formulations, and their incorporation into such formulations, are disclosed in U.S. 4,261,868, Hora et al, April 14, 1981.
- Enzymes for use in detergents can be stabilised by various techniques. Enzyme stabilisation techniques are disclosed and exemplified in U.S. 3,600,319, August 17, 1971, Gedge et al, EP 199,405 and EP 200,586, October 29, 1986, Venegas. Enzyme stabilisation systems are also described, for example, in U.S. 3,519,570.
- a useful Bacillus, sp. AC 13 giving proteases, xylanases and cellulases, is described in WO 9401532 A to Novo.
- a highly preferred component of the composition of detergent components is a bleaching agent.
- Suitable bleaching agents include chlorine and oxygen-releasing bleaching agents.
- the oxygen-releasing bleaching agent contains a hydrogen peroxide source and an organic peroxyacid bleach precursor compound.
- the production of the organic peroxyacid occurs by an in situ reaction of the precursor with a source of hydrogen peroxide.
- Preferred sources of hydrogen peroxide include inorganic perhydrate bleaches.
- a preformed organic peroxyacid is incorporated directly into the composition.
- Compositions containing mixtures of a hydrogen peroxide source and organic peroxyacid precursor in combination with a preformed organic peroxyacid are also envisaged.
- compositions of detergent components preferably include a hydrogen peroxide source, as an oxygen-releasing bleach.
- Suitable hydrogen peroxide sources include the inorganic perhydrate salts.
- the inorganic perhydrate salts are normally incorporated in the form of the sodium salt at a level of from 1% to 40% by weight, more preferably from 2% to 30% by weight and most preferably from 5% to 25% by weight of the compositions.
- inorganic perhydrate salts include perborate, percarbonate, perphosphate, persulfate and persilicate salts.
- the inorganic perhydrate salts are normally the alkali metal salts.
- the inorganic perhydrate salt may be included as the crystalline solid without additional protection.
- the preferred executions of such granular compositions utilize a coated form of the material which provides better storage stability for the perhydrate salt in the granular product.
- Sodium perborate can be in the form of the monohydrate of nominal formula NaB ⁇ 2H2 ⁇ 2 or the tetrahydrate NaB ⁇ 2H2 ⁇ 2-3H2 ⁇ .
- Alkali metal percarbonates, particularly sodium percarbonate are preferred perhydrates for inclusion in compositions in accordance with the invention.
- Sodium percarbonate is an addition compound having a formula corresponding to 2Na2CO3.3H2O2, and is available commercially as a crystalline solid.
- Sodium percarbonate, being a hydrogen peroxide addition compound tends on dissolution to release the hydrogen peroxide quite rapidly which can increase the tendency for localised high bleach concentrations to arise.
- the percarbonate is most preferably incorporated into such compositions in a coated form which provides in-product stability.
- a suitable coating material providing in product stability comprises mixed salt of a water soluble alkali metal sulphate and carbonate.
- the weight ratio of the mixed salt coating material to percarbonate lies in the range from 1 : 200 to 1 : 4, more preferably from 1 : 99 to 1 : 9, and most preferably from 1 : 49 to 1 : 19.
- the mixed salt is of sodium sulphate and sodium carbonate which has the general formula Na2SO4.n.Na2CO3 wherein n is from 0.1 to 3, preferably n is from 0.3 to 1.0 and most preferably n is from 0.2 to 0.5.
- Another suitable coating material providing in product stability comprises sodium silicate of S1O2 : Na2 ⁇ ratio from 1.8 : 1 to 3.0 : 1, preferably 1.8:1 to 2.4:1, and/or sodium metasilicate, preferably applied at a level of from 2% to 10%, (normally from 3% to 5%) of Si ⁇ 2 by weight of the inorganic perhydrate salt.
- Magnesium silicate can also be included in the coating. Coatings that contain silicate and borate salts or boric acids or other inorganics are also suitable.
- Potassium peroxymonopersulfate is another inorganic perhydrate salt of utility in the compositions herein.
- Peroxyacid bleach precursors are compounds which react with hydrogen peroxide in a perhydrolysis reaction to produce a peroxyacid.
- peroxyacid bleach precursors may be represented as
- L is a leaving group and X is essentially any functionality, such that on perhydrolysis the structure of the peroxyacid produced is O
- Peroxyacid bleach precursor compounds are preferably incorporated at a level of from 0.5% to 20% by weight, more preferably from 1% to 10% by weight, most preferably from 1.5% to 5% by weight of the compositions.
- Suitable peroxyacid bleach precursor compounds typically contain one or more N- or O- acyl groups, which precursors can be selected from a wide range of classes.
- Suitable classes include anhydrides, esters, imides, lactams and acylated derivatives of imidazoles and oximes. Examples of useful materials within these classes are disclosed in GB-A- 1586789. Suitable esters are disclosed in GB-A-836988, 864798, 1147871, 2143231 and EP-A-0170386.
- L group The leaving group, hereinafter L group, must be sufficiently reactive for the perhydrolysis reaction to occur within the optimum time frame (e.g., a wash cycle). However, if L is too reactive, this activator will be difficult to stabilise for use in a bleaching composition.
- Preferred L groups are selected from the group consisting of:
- R is an alkyl, aryl, or alkaryl group containing from 1 to
- R 3 is an alkyl chain containing from 1 to 8 carbon atoms
- R 4 is H or
- R , R5 is an alkenyl chain containing from 1 to 8 carbon atoms and Y is H or a solubilizing group.
- Any ofR 1 , R3 and R 4 may be substituted by essentially any functional group including, for example alkyl, hydroxy, alkoxy, halogen, amine, nitrosyl, amide and ammonium or alkyl ammonium groups.
- the preferred solubilizing groups are -SO 3 " M + , -CO 2 " M + , -SO 4 " M + , -N + (R 3 ) 4 X " and
- M O ⁇ N(R ), and most preferably -SO., M and -CO- M wherein R is an alkyl chain containing from 1 to 4 carbon atoms, M is a cation which provides solubility to the bleach activator and X is an anion which provides solubility to the bleach activator.
- M is an alkali metal, ammonium or substituted ammonium cation, with sodium and potassium being most preferred, and X is a halide, hydroxide, methylsulfate or acetate anion.
- Perbenzoic acid precursor compounds provide perbenzoic acid on perhydrolysis.
- Suitable O-acylated perbenzoic acid precursor compounds include the substituted and unsubstituted benzoyl oxybenzene sulfonates, including for example benzoyl oxybenzene sulfonate:
- benzoylation products of sorbitol, glucose, and all saccharides with benzoylating agents including for example:
- Perbenzoic acid precursor compounds of the imide type include N-benzoyl succinimide, tetrabenzoyl ethylene diamine and the N-benzoyl substituted ureas.
- Suitable imidazole type perbenzoic acid precursors include N-benzoyl imidazole and N-benzoyl benzimidazole and other useful N-acyl group-containing perbenzoic acid precursors include N-benzoyl pyrrolidone, dibenzoyl taurine and benzoyl pyroglutamic acid.
- perbenzoic acid precursors include the benzoyl diacyl peroxides, the benzoyl tetraacyl peroxides, and the compound having the formula:
- Phthalic anhydride is another suitable perbenzoic acid precursor compound herein:
- Suitable N-acylated lactam perbenzoic acid precursors have the formula:
- n is from 0 to 8, preferably from 0 to 2
- R is a benzoyl group.
- Perbenzoic acid derivative precursors provide substituted perbenzoic acids on perhydrolysis.
- Suitable substituted perbenzoic acid derivative precursors include any of the herein disclosed perbenzoic precursors in which the benzoyl group is substituted by essentially any non-positively charged (i.e.; non-cationic) functional group including, for example alkyl, hydroxy, alkoxy, halogen, amine, nitrosyl and amide groups.
- a preferred class of substituted perbenzoic acid precursor compounds are the amide substituted compounds of the following general formulae:
- R! is an aryl or alkaryl group with from 1 to 14 carbon atoms
- R ⁇ is an arylene, or alkarylene group containing from 1 to 14 carbon atoms
- R ⁇ is H or an alkyl, aryl, or alkaryl group containing 1 to 10 carbon atoms and L can be essentially any leaving group
- R! preferably contains from 6 to 12 carbon atoms.
- R ⁇ preferably contains from
- R may be aryl, substituted aryl or alkylaryl containing branching, substitution, or both and may be sourced from either synthetic sources or natural sources including for example, tallow fat. Analogous structural variations are permissible for
- R2 The substitution can include alkyl, aryl, halogen, nitrogen, sulphur and other typical substituent groups or organic compounds.
- R ⁇ is preferably H or methyl, R! and R$ should not contain more than 18 carbon atoms in total.
- Amide substituted bleach activator compounds of this type are described in EP-A-0170386.
- Cationic peroxyacid precursor compounds produce cationic peroxyacids on perhydrolysis.
- cationic peroxyacid precursors are formed by substituting the peroxyacid part of a suitable peroxyacid precursor compound with a positively charged functional group, such as an ammonium or alkyl ammonium group, preferably an ethyl or methyl ammonium group.
- Cationic peroxyacid precursors are typically present in the compositions as a salt with a suitable anion, such as for example a halide ion or a methylsulfate ion.
- the peroxyacid precursor compound to be so cationically substituted may be a perbenzoic acid, or substituted derivative thereof, precursor compound as described hereinbefore.
- the peroxyacid precursor compound may be an alkyl percarboxylic acid precursor compound or an amide substituted alkyl peroxyacid precursor as described hereinafter
- Cationic peroxyacid precursors are described in U.S. Patents 4,904,406; 4,751,015; 4,988,451; 4,397,757; 5,269,962; 5,127,852; 5,093,022; 5,106,528; U.K. 1,382,594; EP 475,512, 458,396 and 284,292; and in JP 87-318,332.
- Suitable cationic peroxyacid precursors include any of the ammonium or alkyl ammonium substituted alkyl or benzoyl oxybenzene sulfonates, N-acylated caprolactams, and monobenzoyltetraacetyl glucose benzoyl peroxides.
- a preferred cationically substituted benzoyl oxybenzene sulfonate is the 4-(trimethyl ammonium) methyl derivative of benzoyl oxybenzene sulfonate:
- a preferred cationically substituted alkyl oxybenzene sulfonate has the formula:
- Preferred cationic peroxyacid precursors of the N-acylated caprolactam class include the trialkyl ammonium methylene benzoyl caprolactams, particularly trimethyl ammonium methylene benzoyl caprolactam:
- N-acylated caprolactam class examples include the trialkyl ammonium methylene alkyl caprolactams:
- n is from 0 to 12, particularly from 1 to 5.
- Another preferred cationic peroxyacid precursor is 2-(N,N,N-trimethyl ammonium) ethyl sodium 4-sulphophenyl carbonate chloride.
- Alkyl percarboxylic acid bleach precursors form percarboxylic acids on perhydrolysis.
- Preferred precursors of this type provide peracetic acid on perhydrolysis.
- Preferred alkyl percarboxylic precursor compounds of the imide type include the N-
- TAED Tetraacetyl ethylene diamine
- alkyl percarboxylic acid precursors include sodium 3,5,5-tri-methyl hexanoyloxybenzene sulfonate (iso-NOBS), sodium nonanoyloxybenzene sulfonate (NOBS), sodium acetoxybenzene sulfonate (ABS) and penta acetyl glucose.
- Amide substituted alkyl peroxyacid precursor compounds are also suitable, including those of the following general formulae: R 1 — L
- R! is an alkyl group with from 1 to 14 carbon atoms
- R ⁇ is an alkylene group containing from 1 to 14 carbon atoms
- R ⁇ is H or an alkyl group containing 1 to 10 carbon atoms and L can be essentially any leaving group.
- R ⁇ preferably contains from 6 to 12 carbon atoms.
- R ⁇ preferably contains from 4 to 8 carbon atoms
- R! may be straight chain or branched alkyl containing branching, substitution, or both and may be sourced from either synthetic sources or natural sources including for example, tallow fat. Analogous structural variations are permissible for R2.
- the substitution can include alkyl, halogen, nitrogen, sulphur and other typical substituent groups or organic compounds.
- R ⁇ is preferably H or methyl, R! and R ⁇ should not contain more than 18 carbon atoms in total. Amide substituted bleach activator compounds of this type are described in EP-A-0170386.
- precursor compounds of the benzoxazin-type as disclosed for example in EP-A-332,294 and EP-A-482,807, particularly those having the formula:
- R « is H, alkyl, alkaryl, aryl, arylalkyl, and wherein R ⁇ , R,,, R., and R ⁇ - may be the same or different substituents selected from H, halogen, alkyl, alkenyl, aryl, hydroxyl, alkoxyl, amino, alkyl amino, COORg (wherein R ⁇ is H or an alkyl group) and carbonyl functions.
- An especially preferred precursor of the benzoxazin-type is:
- the organic peroxyacid bleaching system may contain, in addition to, or as an alternative to, an organic peroxyacid bleach precursor compound, a preformed organic peroxyacid , typically at a level of from 0.5% to 25% by weight, more preferably from 1% to 10% by weight of the composition.
- a preferred class of organic peroxyacid compounds are the amide substituted compounds of the following general formulae: R N — R C — OOH R 1 N R' C — OOH
- R ⁇ is an alkyl, aryl or alkaryl group with from 1 to 14 carbon atoms
- R ⁇ is an alkylene, arylene, and alkarylene group containing from 1 to 14 carbon atoms
- R ⁇ is
- R ⁇ preferably contains from 6 to 12 carbon atoms.
- R ⁇ preferably contains from 4 to 8 carbon atoms.
- R! may be straight chain or branched alkyl, substituted aryl or alkylaryl containing branching, substitution, or both and may be sourced from either synthetic sources or natural sources including for example, tallow fat. Analogous structural variations are permissible for R2.
- the substitution can include alkyl, aryl, halogen, nitrogen, sulphur and other typical substituent groups or organic compounds.
- R ⁇ is preferably H or methyl, R! and R ⁇ should not contain more than 18 carbon atoms in total. Amide substituted organic peroxyacid compounds of this type are described in EP-A-0170386.
- organic peroxyacids include diacyl and tetraacylperoxides, especially diperoxydodecanedioc acid, diperoxytetradecanedioc acid, and diperoxyhexadecanedioc acid.
- Dibenzoyl peroxide is a preferred organic peroxyacid herein.
- Mono- and diperazelaic acid, mono- and diperbrassylic acid, and N-phthaloylaminoperoxicaproic acid are also suitable herein.
- Controlled rate of release - means
- a means may be provided for controlling the rate of release of bleaching agent, particularly oxygen bleach to the wash solution.
- Means for controlling the rate of release of the bleach may provide for controlled release of peroxide species to the wash solution.
- Such means could, for example, include controlling the release of any inorganic perhydrate salt, acting as a hydrogen peroxide source, to the wash solution.
- Another mechanism for controlling the rate of release of bleach may be by coating the bleach with a coating designed to provide the controlled release.
- the coating may therefore, for example, comprise a poorly water soluble material, or be a coating of sufficient thickness that the kinetics of dissolution of the thick coating provide the controlled rate of release.
- the coating material may be applied using various methods. Any coating material is typically present at a weight ratio of coating material to bleach of from 1 :99 to 1 :2, preferably from 1 :49 to 1 :9.
- Suitable coating materials include triglycerides (e.g. partially) hydrogenated vegetable oil, soy bean oil, cotton seed oil) mono or diglycerides, microcrystalline waxes, gelatin, cellulose, fatty acids and any mixtures thereof.
- suitable coating materials can comprise the alkali and alkaline earth metal sulphates, silicates and carbonates, including calcium carbonate and silicas.
- a preferred coating material particularly for an inorganic perhydrate salt bleach source, comprises sodium silicate of Si ⁇ 2 : Na2 ⁇ ratio from 1.8 : 1 to 3.0 : 1, preferably 1.8:1 to 2.4:1, and/or sodium metasilicate, preferably applied at a level of from 2% to 10%, (normally from 3% to 5%) of S1O2 by weight of the inorganic perhydrate salt.
- Magnesium silicate can also be included in the coating.
- Suitable binders include the C10-C20 alcohol ethoxylates containing from 5 - 100 moles of ethylene oxide per mole of alcohol and more preferably the C15-C20 primary alcohol ethoxylates containing from 20 - 100 moles of ethylene oxide per mole of alcohol.
- binders include certain polymeric materials.
- Polyvinylpyrrolidones with an average molecular weight of from 12,000 to 700,000 and polyethylene glycols (PEG) with an average molecular weight of from 600 to 5 x 10 ⁇ preferably 1000 to 400,000 most preferably 1000 to 10,000 are examples of such polymeric materials.
- Copolymers of maleic anhydride with ethylene, methylvinyl ether or methacrylic acid, the maleic anhydride constituting at least 20 mole percent of the polymer are further examples of polymeric materials useful as binder agents.
- polymeric materials may be used as such or in combination with solvents such as water, propylene glycol and the above mentioned C10-C20 alcohol ethoxylates containing from 5 - 100 moles of ethylene oxide per mole.
- solvents such as water, propylene glycol and the above mentioned C10-C20 alcohol ethoxylates containing from 5 - 100 moles of ethylene oxide per mole.
- binders include the C ⁇ 0-C20 mono- and diglycerol ethers and also the C10-C20 fatty acids.
- Cellulose derivatives such as methylcellulose, carboxymethylcellulose and hydroxyethylcellulose, and homo- or co-polymeric polycarboxylic acids or their salts are other examples of binders suitable for use herein.
- One method for applying the coating material involves agglomeration.
- Preferred agglomeration processes include the use of any of the organic binder materials described hereinabove. Any conventional agglomerator/mixer may be used including, but not limited to pan, rotary drum and vertical blender types. Molten coating compositions may also be applied either by being poured onto, or spray atomized onto a moving bed of bleaching agent.
- Suitable means of providing the required controlled release include mechanical means for altering the physical characteristics of the bleach to control its solubility and rate of release. Suitable protocols could include compression, mechanical injection, manual injection, and adjustment of the solubility of the bleach compound by selection of particle size of any particulate component.
- particle size Whilst the choice of particle size will depend both on the composition of the particulate component, and the desire to meet the desired controlled release kinetics, it is desirable that the particle size should be more than 500 micrometers, preferably having an average particle diameter of from 800 to 1200 micrometers.
- Additional protocols for providing the means of controlled release include the suitable choice of any other components of the detergent composition matrix such that when the composition is introduced to the wash solution the ionic strength environment therein provided enables the required controlled release kinetics to be achieved.
- compositions described herein which contain bleach as an detergent component may additionally contain as a preferred component, a metal containing bleach catalyst.
- a metal containing bleach catalyst is a transition metal containing bleach catalyst, more preferably a manganese or cobalt-containing bleach catalyst.
- a suitable type of bleach catalyst is a catalyst comprising a heavy metal cation of defined bleach catalytic activity, such as copper, iron cations, an auxiliary metal cation having little or no bleach catalytic activity, such as zinc or aluminium cations, and a sequestrant having defined stability constants for the catalytic and auxiliary metal cations, particularly ethylenediaminetetraacetic acid, ethylenediaminetetra(methylenephosphonic acid) and water-soluble salts thereof.
- a heavy metal cation of defined bleach catalytic activity such as copper, iron cations
- an auxiliary metal cation having little or no bleach catalytic activity such as zinc or aluminium cations
- a sequestrant having defined stability constants for the catalytic and auxiliary metal cations, particularly ethylenediaminetetraacetic acid, ethylenediaminetetra(methylenephosphonic acid) and water-soluble salts thereof.
- Preferred types of bleach catalysts include the manganese-based complexes disclosed in U.S. Pat. 5,246,621 and U.S. Pat. 5,244,594. Preferred examples of these catalysts include O) j (u-O Ac)2( 1 ,4,7-trimethyl- 1 ,4,7-triazacyclononane)2-(Cl ⁇ 4)2, Mn IV 4(u-O)6( 1 ,4,7- triazacyclononane)4-(ClO4)2, Mn ⁇ Mn IV 4(u-O) ⁇ (u-OAc)2_(l ,4,7-trimethyl-l ,4,7- triazacyclononane)2-(Cl ⁇ 4)3, and mixtures thereof.
- ligands suitable for use herein include 1 ,5,9-trimethyl-l ,5,9-triazacyclododecane, 2-methyl-l ,4,7-triazacyclononane, 2-methyl- 1 ,4,7-triazacyclononane, 1 ,2,4,7-tetramethyl- 1 ,4,7- triazacyclononane, and mixtures thereof.
- bleach catalysts useful in the compositions herein may also be selected as appropriate for the present invention.
- suitable bleach catalysts see U.S. Pat. 4,246,612 and U.S. Pat. 5,227,084. See also U.S. Pat. 5,194,416 which teaches mononuclear manganese (IV) complexes such as Mn(l,4,7-trimethyl-l,4,7- triazacyclononane)(OCH3)3_(PF6).
- Still another type of bleach catalyst is a water- soluble complex of manganese (III), and/or (IV) with a ligand which is a non-carboxylate polyhydroxy compound having at least three consecutive C-OH groups.
- Preferred ligands include sorbitol, iditol, dulsitol, mannitol, xylithol, arabitol, adonitol, meso- erythritol, meso-inositol, lactose, and mixtures thereof.
- U.S. Pat. 5,114,611 teaches a bleach catalyst comprising a complex of transition metals, including Mn, Co, Fe, or Cu, with an non-(macro)-cyclic ligand.
- Said ligands are of the formula:
- Preferred ligands include pyridine, pyridazine, pyrimidine, pyrazine, imidazole, pyrazole, and triazole rings.
- said rings may be substituted with substituents such as alkyl, aryl, alkoxy, halide, and nitro.
- Particularly preferred is the ligand 2,2'-bispyridylamine.
- Preferred bleach catalysts include Co, Cu, Mn, Fe,-bispyridylmethane and -bispyridylamine complexes.
- Highly preferred catalysts include Co(2,2'-bispyridylamine)Cl2,
- Preferred examples include binuclear Mn complexes with tetra-N-dentate and bi-N- dentate ligands, including N4Mn m (u-O)2Mn IV N4) + and [Bipy2Mn I][I (u-
- the bleach-catalyzing manganese complexes of the present invention have not been elucidated, it may be speculated that they comprise chelates or other hydrated coordination complexes which result from the interaction of the carboxyl and nitrogen atoms of the ligand with the manganese cation.
- the oxidation state of the manganese cation during the catalytic process is not known with certainty, and may be the (+11), (+III), (+IV) or (+V) valence state. Due to the ligands' possible six points of attachment to the manganese cation, it may be reasonably speculated that multi- nuclear species and/or "cage" structures may exist in the aqueous bleaching media.
- bleach catalysts are described, for example, in European patent application, publication no. 408,131 (cobalt complex catalysts), European patent applications, publication nos. 384,503, and 306,089 (metallo-porphyrin catalysts), U.S. 4,728,455 (manganese/multidentate ligand catalyst), U.S. 4,711,748 and European patent application, publication no. 224,952, (absorbed manganese on aluminosilicate catalyst), U.S.
- the preferred cobalt catalyst of this type useful herein are cobalt pentaamine chloride salts having the formula [Co(NH3)5Cl] Y y , and especially [Co(NH3) 5 Cl]Cl2.
- T are selected from the group consisting of chloride, iodide, I3", formate, nitrate, nitrite, sulfate, sulfite, citrate, acetate, carbonate, bromide, PFg", BF4-, B(Ph)4 _ , phosphate, phosphite, silicate, tosylate, methanesulfonate, and combinations thereof.
- T can be protonated if more than one anionic group exists in T, e.g., HPO42-,
- T may be selected from the group consisting of non- traditional inorganic anions such as anionic surfactants (e.g., linear alkylbenzene sulfonates (LAS), alkyl sulfates (AS), alkylethoxysulfonates (AES), etc.) and/or anionic polymers (e.g., polyacrylates, polymethacrylates, etc.).
- anionic surfactants e.g., linear alkylbenzene sulfonates (LAS), alkyl sulfates (AS), alkylethoxysulfonates (AES), etc.
- anionic polymers e.g., polyacrylates, polymethacrylates, etc.
- the M moieties include, but are not limited to, for example, F", SO4-2, NCS", SCN",
- M can be protonated if more than one anionic group exists in M (e.g., HPO4 -, HCO3", H2PO4", HOC(O)CH2C(O)O-, etc.)
- Preferred M moieties are substituted and unsubstituted C - C30 carboxylic acids having the formulas:
- R is preferably selected from the group consisting of hydrogen and Ci -C30 (preferably Cj-Ci g) unsubstituted and substituted alkyl, C6-C30 (preferably C6-C1 g) unsubstituted and substituted aryl, and C3-C30 (preferably C5-C1 g) unsubstituted and substituted heteroaryl, wherein substituents are selected from the group consisting of - NR'3, -NR' 4 +, -C(O)OR', -OR', -C(O)NR' , wherein R' is selected from the group consisting of hydrogen and Cj-Cg moieties.
- Such substituted R therefore include the moieties -(CH2) n OH and -(CH2) n NR'4 + , wherein n is an integer from 1 to 16, preferably from 2 to 10, and most preferably from 2 to 5.
- M are carboxylic acids having the formula above wherein R is selected from the group consisting of hydrogen, methyl, ethyl, propyl, straight or branched C4-
- Preferred carboxylic acid M moieties include formic, benzoic, octanoic, nonanoic, decanoic, dodecanoic, malonic, maleic, succinic, adipic, phthalic, 2-ethylhexanoic, naphthenoic, oleic, palmitic, triflate, tartrate, stearic, butyric, citric, acrylic, aspartic, fumaric, lauric, linoleic, lactic, malic, and especially acetic acid.
- the B moieties include carbonate, di- and higher carboxylates (e.g., oxalate, malonate, malic, succinate, maleate), picolinic acid, and alpha and beta amino acids (e.g., glycine, alanine, beta-alanine, phenylalanine).
- carboxylates e.g., oxalate, malonate, malic, succinate, maleate
- picolinic acid e.g., glycine, alanine, beta-alanine, phenylalanine.
- Cobalt bleach catalysts useful herein are known, being described for example along with their base hydrolysis rates, in M. L. Tobe, "Base Hydrolysis of Transition-Metal Complexes", Adv. Inorg. Bioinorg. Mech., (1983), 2, pages 1-94.
- cobalt pentaamine acetate salts having the formula [Co(NH3)5OAc] T y , wherein OAc represents an acetate moiety, and especially cobalt pentaamine acetate chloride, [Co(NH3) 5 OAc]Cl2; as well as [Co(NH 3 ) 5 OAc](OAc)2; [Co(NH 3 ) 5 OAc](PF 6 )2; [Co(NH 3 ) 5 OAc](SO 4 ); [Co(NH 3 ) 5 OAc](BF4)2; and [Co(NH3) 5 OAc](NO 3 )2 (herein "PAC").
- PAC cobalt pentaamine acetate salts having the formula [Co(NH3)5OAc] T y , wherein OAc represents an acetate moiety, and especially cobalt pentaamine acetate chloride, [Co(NH3) 5 OAc]Cl2; as well as [Co(NH 3 )
- Cobalt catalysts suitable for incorporation into the detergent tablets of the present invention may be produced according to the synthetic routes disclosed in U.S. Patent Nos. 5,559,261, 5,581,005, and 5,597,936, the disclosures of which are herein incorporated by reference.
- catalysts may be co-processed with adjunct materials so as to reduce the colour impact if desired for the aesthetics of the product, or to be included in enzyme-containing particles as exemplified hereinafter, or the compositions may be manufactured to contain catalyst "speckles".
- Organic polymeric compounds may be added as preferred components of the detergent tablets in accord with the invention.
- organic polymeric compound it is meant essentially any polymeric organic compound commonly found in detergent compositions having dispersant, anti-redeposition, soil release agents or other detergency properties.
- Organic polymeric compound is typically incorporated in the detergent compositions of the invention at a level of from 0.1% to 30%, preferably from 0.5% to 15%, most preferably from 1% to 10% by weight of the compositions.
- organic polymeric compounds include the water soluble organic homo- or co-polymeric polycarboxylic acids, modified polycarboxylates or their salts in which the polycarboxylic acid comprises at least two carboxyl radicals separated from each other by not more than two carbon atoms. Polymers of the latter type are disclosed in GB-A- 1,596,756.
- salts are polyacrylates of molecular weight 2000-10000 and their copolymers with any suitable other monomer units including modified acrylic, fumaric, maleic, itaconic, aconitic, mesaconic, citraconic and methylenemalonic acid or their salts, maleic anhydride, acrylamide, alkylene, vinylmethyl ether, styrene and any mixtures thereof.
- Preferred are the copolymers of acrylic acid and maleic anhydride having a molecular weight of from 20,000 to 100,000.
- Preferred commercially available acrylic acid containing polymers having a molecular weight below 15,000 include those sold under the tradename Sokalan PA30, PA20, PA15, PA10 and Sokalan CP10 by BASF GmbH, and those sold under the tradename Acusol 45N, 480N, 460N by Rohm and Haas.
- Preferred acrylic acid containing copolymers include those which contain as monomer units: a) from 90% to 10%, preferably from 80% to 20% by weight acrylic acid or its salts and b) from 10% to 90%, preferably from 20% to 80% by weight of a substituted acrylic monomer or its salts having the general formula -[CR2-CR ⁇ (CO-O-R3)]- wherein at least one of the substituents R ⁇ , R2 or R3, preferably R1 or R2 is a 1 to 4 carbon alkyl or hydroxyalkyl group, R ⁇ or R2 can be a hydrogen and R3 can be a hydrogen or alkali metal salt.
- R ⁇ is methyl
- R2 is hydrogen (i.e. a methacrylic acid monomer).
- the most preferred copolymer of this type has a molecular weight of 3500 and contains 60% to 80% by weight of acrylic acid and 40%» to 20% by weight of methacrylic acid.
- polyamine and modified polyamine compounds are useful herein including those derived from aspartic acid such as those disclosed in EP-A-305282, EP-A-305283 and EP-A-351629.
- Other optional polymers may polyvinyl alcohols and acetates both modified and non- modified, cellulosics and modified cellulosics, polyoxyethylenes, polyoxypropylenes, and copolymers thereof, both modified and non-modified, terephthalate esters of ethylene or propylene glycol or mixtures thereof with polyoxyalkylene units.
- Suitable polymeric soil release agents include those soil release agents having: (a) one or more nonionic hydrophile components consisting essentially of (i) polyoxyethylene segments with a degree of polymerization of at least 2, or (ii) oxypropylene or polyoxypropylene segments with a degree of polymerization of from 2 to 10, wherein said hydrophile segment does not encompass any oxypropylene unit unless it is bonded to adjacent moieties at each end by ether linkages, or (iii) a mixture of oxyalkylene units comprising oxyethylene and from 1 to 30 oxypropylene units, said hydrophile segments preferably comprising at least 25% oxyethylene units and more preferably, especially for such components having 20 to 30 oxypropylene units, at least 50% oxyethylene units; or (b) one or more hydrophobe components comprising (i) C3 oxyalkylene terephthalate segments, wherein, if said hydrophobe components also comprise oxyethylene terephthalate, the ratio of oxyethylene ter
- the poly oxyethylene segments of (a)(i) will have a degree of polymerization of from 200, although higher levels can be used, preferably from 3 to 150, more preferably from 6 to 100.
- Suitable oxy C4-C6 alkylene hydrophobe segments include, but are not limited to, end-caps of polymeric soil release agents such as M ⁇ 3S(CH2) n OCH2CH2 ⁇ -, where M is sodium and n is an integer from 4-6, as disclosed in U.S. Patent 4,721,580, issued January 26, 1988 to Gosselink.
- Polymeric soil release agents useful herein also include cellulosic derivatives such as hydroxyether cellulosic polymers, copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate, and the like. Such agents are commercially available and include hydroxy ethers of cellulose such as METHOCEL (Dow). Cellulosic soil release agents for use herein also include those selected from the group consisting of C1 -C4 alkyl and C4 hydroxyalkyl cellulose; see U.S. Patent 4,000,093, issued December 28, 1976 to Nicol, et al.
- Soil release agents characterized by poly(vinyl ester) hydrophobe segments include graft copolymers of poly( vinyl ester), e.g., Ci -C6 vinyl esters, preferably poly(vinyl acetate) grafted onto polyalkylene oxide backbones, such as polyethylene oxide backbones. See European Patent Application 0 219 048, published April 22, 1987 by Kud, et al.
- Another suitable soil release agent is a copolymer having random blocks of ethylene terephthalate and polyethylene oxide (PEO) terephthalate.
- the molecular weight of this polymeric soil release agent is in the range of from 25,000 to 55,000. See U.S. Patent 3,959,230 to Hays, issued May 25, 1976 and U.S. Patent 3,893,929 to Basadur issued July 8, 1975.
- Another suitable polymeric soil release agent is a polyester with repeat units of ethylene terephthalate units contains 10-15% by weight of ethylene terephthalate units together with 90-80% by weight of poly oxy ethylene terephthalate units, derived from a polyoxyethylene glycol of average molecular weight 300-5,000.
- Another suitable polymeric soil release agent is a sulfonated product of a substantially linear ester oligomer comprised of an oligomeric ester backbone of terephthaloyl and oxyalkyleneoxy repeat units and terminal moieties covalently attached to the backbone.
- polymeric soil release agents include the terephthalate polyesters of U.S. Patent 4,711,730, issued December 8, 1987 to Gosselink et al, the anionic end-capped oligomeric esters of U.S. Patent 4,721,580, issued January 26, 1988 to Gosselink, and the block polyester oligomeric compounds of U.S. Patent 4,702,857, issued October 27, 1987 to Gosselink.
- Other polymeric soil release agents also include the soil release agents of U.S. Patent 4,877,896, issued October 31, 1989 to Maldonado et al, which discloses anionic, especially sulfoarolyl, end-capped terephthalate esters.
- Another soil release agent is an oligomer with repeat units of terephthaloyl units, sulfoisoterephthaloyl units, oxyethyleneoxy and oxy-1 ,2-propylene units.
- the repeat units form the backbone of the oligomer and are preferably terminated with modified isethionate end-caps.
- a particularly preferred soil release agent of this type comprises one sulfoisophthaloyl unit, 5 terephthaloyl units, oxyethyleneoxy and oxy- 1,2- propyleneoxy units in a ratio of from 1.7 to 1.8, and two end-cap units of sodium 2-(2- hydroxyethoxy)-ethanesulfonate.
- the tablets of the invention preferably contain as an optional component a heavy metal ion sequestrant.
- heavy metal ion sequestrant it is meant herein components which act to sequester (chelate) heavy metal ions. These components may also have calcium and magnesium chelation capacity, but preferentially they show selectivity to binding heavy metal ions such as iron, manganese and copper.
- Heavy metal ion sequestrants are generally present at a level of from 0.005% to 20%, preferably from 0.1% to 10%, more preferably from 0.25% to 7.5% and most preferably from 0.5% to 5% by weight of the compositions.
- Heavy metal ion sequestrants which are acidic in nature, having for example phosphonic acid or carboxylic acid functionalities, may be present either in their acid form or as a complex/salt with a suitable counter cation such as an alkali or alkaline metal ion, ammonium, or substituted ammonium ion, or any mixtures thereof.
- a suitable counter cation such as an alkali or alkaline metal ion, ammonium, or substituted ammonium ion, or any mixtures thereof.
- any salts/complexes are water soluble.
- the molar ratio of said counter cation to the heavy metal ion sequestrant is preferably at least 1 :1.
- Suitable heavy metal ion sequestrants for use herein include organic phosphonates, such as the amino alkylene poly (alkylene phosphonates), alkali metal ethane 1 -hydroxy disphosphonates and nitrilo trimethylene phosphonates.
- organic phosphonates such as the amino alkylene poly (alkylene phosphonates), alkali metal ethane 1 -hydroxy disphosphonates and nitrilo trimethylene phosphonates.
- Preferred among the above species are diethylene triamine penta (methylene phosphonate), ethylene diamine tri (methylene phosphonate) hexamethylene diamine tetra (methylene phosphonate) and hydroxy-ethylene 1,1 diphosphonate.
- Suitable heavy metal ion sequestrant for use herein include nitrilotriacetic acid and polyaminocarboxylic acids such as ethylenediaminotetracetic acid, ethylenetriamine pentacetic acid, ethylenediamine disuccinic acid, ethylenediamine diglutaric acid, 2- hydroxypropylenediamine disuccinic acid or any salts thereof.
- EDDS ethylenediamine-N,N'-disuccinic acid
- alkali metal, alkaline earth metal, ammonium, or substituted ammonium salts thereof, or mixtures thereof Especially preferred is ethylenediamine-N,N'-disuccinic acid (EDDS) or the alkali metal, alkaline earth metal, ammonium, or substituted ammonium salts thereof, or mixtures thereof.
- Preferred EDDS compounds are the free acid form and the sodium or magnesium salt or complex thereof.
- Crystal growth inhibitor component The detergent tablets preferably contain a crystal growth inhibitor component, preferably an organodiphosphonic acid component, incorporated preferably at a level of from 0.01% to 5%, more preferably from 0.1% to 2% by weight of the compositions.
- organo diphosphonic acid it is meant herein an organo diphosphonic acid which does not contain nitrogen as part of its chemical structure. This definition therefore excludes the organo aminophosphonates, which however may be included in compositions of the invention as heavy metal ion sequestrant components.
- the organo diphosphonic acid is preferably a C1 -C4 diphosphonic acid, more preferably a C2 diphosphonic acid, such as ethylene diphosphonic acid, or most preferably ethane 1 - hydroxy- 1,1 -diphosphonic acid (HEDP) and may be present in partially or fully ionized form, particularly as a salt or complex.
- HEDP ethane 1 - hydroxy- 1,1 -diphosphonic acid
- the detergent tablet optionally contains a water-soluble sulfate salt.
- the water-soluble sulfate salt is at the level of from 0.1% to 40%, more preferably from 1% to 30%, most preferably from 5% to 25% by weight of the compositions.
- the water-soluble sulfate salt may be essentially any salt of sulfate with any counter cation.
- Preferred salts are selected from the sulfates of the alkali and alkaline earth metals, particularly sodium sulfate.
- An alkali metal silicate is a preferred component of the tablet of the present invention.
- a preferred alkali metal silicate is sodium silicate having an SiO2:Na2O ratio of from 1.8 to 3.0, preferably from 1.8 to 2.4, most preferably 2.0.
- Sodium silicate is preferably present at a level of less than 20%, preferably from 1% to 15%, most preferably from 3% to 12% by weight of Si ⁇ 2-
- the alkali metal silicate may be in the form of either the anhydrous salt or a hydrated salt.
- Alkali metal silicate may also be present as a component of an alkalinity system.
- the alkalinity system also preferably contains sodium metasilicate, present at a level of at least 0.4% Si ⁇ 2 by weight.
- Sodium metasilicate has a nominal Si ⁇ 2 : Na2 ⁇ ratio of 1.0.
- the weight ratio of said sodium silicate to said sodium metasilicate, measured as Si ⁇ 2, is preferably from 50:1 to 5:4, more preferably from 15:1 to 2:1, most preferably
- colourant means any substance that absorbs specific wavelengths of light from the visible light spectrum. Such colourants when added to a detergent composition have the effect of changing the visible colour and thus the appearance of the detergent composition.
- Colourants may be for example either dyes or pigments.
- the colourants are stable in composition in which they are to be incorported. Thus in a composition of high pH the colourant is preferably alkali stable and in a composition of low pH the colourant is preferably acid stable.
- the first and/or second and/or optionally further phases may contain a colourant, a mixture of colourants, coloured particles or mixture of coloured particles such that the various phases have different visual appearances.
- a colourant Preferably one of either the first or the second phases comprises a colourant.
- both the first and second and/or subsequent phases comprise a colourant it is preferred that the colourants have a different visual appearance.
- suitable dyes include reactive dyes, direct dyes, azo dyes.
- Preferred dyes include phthalocyanine dyes, anthraquinone dye, quinoline dyes, monoazo, disazo and polyazo. More preferred dyes include anthraquinone, quinoline and monoazo dyes.
- Preferred dyes include SANDOLAN E-HRL 180% (tradename), SANDOLAN MILLING BLUE (tradename), TURQUOISE ACID BLUE (tradename) and SANDOLAN BRILLIANT GREEN (tradename) all available from Clariant UK, HEXACOL QUINOLINE YELLOW (tradename) and HEXACOL BRILLIANT BLUE (tradename) both available from Pointings, UK, ULTRA MARINE BLUE (tradename) available from Holliday or LEVAFIX TURQUISE BLUE EBA (tradename) available from Bayer, USA.
- the colourant may be incorporated into the phases by any suitable method. Suitable methods include mixing all or selected detergent components with a colourant in a drum or spraying all or selected detergent components with the colourant in a rotating drum.
- Colourant when present as a component of the first phase is present at a level of from 0.001% to 1.5%, preferably from 0.01% to 1.0%, most preferably from 0.1% to 0.3%.
- colourant is generally present at a level of from 0.001% to 0.1%, more preferably from 0.005% to 0.05%, most preferably from 0.007% to 0.02%.
- the tablets of the present invention suitable for use in dishwashing methods may contain corrosion inhibitors preferably selected from organic silver coating agents, particularly paraffin, nitrogen-containing corrosion inhibitor compounds and Mn(II) compounds, particularly Mn(II) salts of organic ligands.
- corrosion inhibitors preferably selected from organic silver coating agents, particularly paraffin, nitrogen-containing corrosion inhibitor compounds and Mn(II) compounds, particularly Mn(II) salts of organic ligands.
- Organic silver coating agents are described in PCT Publication No. WO94/ 16047 and copending European application No. EP-A-690122.
- Nitrogen-containing corrosion inhibitor compounds are disclosed in copending European Application no. EP-A- 634,478.
- Mn(II) compounds for use in corrosion inhibition are described in copending European Application No. EP-A-672 749.
- Organic silver coating agent may be incorporated at a level of from 0.05% to 10%, preferably from 0.1% to 5% by weight of the total composition.
- the functional role of the silver coating agent is to form 'in use' a protective coating layer on any silverware components of the washload to which the compositions of the invention are being applied.
- the silver coating agent should hence have a high affinity for attachment to solid silver surfaces, particularly when present in as a component of an aqueous washing and bleaching solution with which the solid silver surfaces are being treated.
- Suitable organic silver coating agents herein include fatty esters of mono- or polyhydric alcohols having from 1 to 40 carbon atoms in the hydrocarbon chain.
- the fatty acid portion of the fatty ester can be obtained from mono- or poly-carboxylic acids having from 1 to 40 carbon atoms in the hydrocarbon chain.
- monocarboxylic fatty acids include behenic acid, stearic acid, oleic acid, palmitic acid, myristic acid, lauric acid, acetic acid, propionic acid, butyric acid, isobutyric acid, Valerie acid, lactic acid, glycolic acid and ⁇ , ⁇ '- dihydroxyisobutyric acid.
- suitable polycarboxylic acids include: n-butyl-malonic acid, isocitric acid, citric acid, maleic acid, malic acid and succinic acid.
- the fatty alcohol radical in the fatty ester can be represented by mono- or polyhydric alcohols having from 1 to 40 carbon atoms in the hydrocarbon chain.
- suitable fatty alcohols include; behenyl, arachidyl, cocoyl, oleyl and lauryl alcohol, ethylene glycol, glycerol, ethanol, isopropanol, vinyl alcohol, diglycerol, xylitol, sucrose, erythritol, pentaerythritol, sorbitol or sorbitan.
- the fatty acid and/or fatty alcohol group of the fatty ester adjunct material have from 1 to 24 carbon atoms in the alkyl chain.
- Preferred fatty esters herein are ethylene glycol, glycerol and sorbitan esters wherein the fatty acid portion of the ester normally comprises a species selected from behenic acid, stearic acid, oleic acid, palmitic acid or myristic acid.
- glycerol esters are also highly preferred. These are the mono-, di- or tri-esters of glycerol and the fatty acids as defined above.
- fatty alcohol esters for use herein include: stearyl acetate, palmityl di-lactate, cocoyl isobutyrate, oleyl maleate, oleyl dimaleate , and tallowyl proprionate.
- Fatty acid esters useful herein include: xylitol monopalmitate, pentaerythritol monostearate, sucrose monostearate, glycerol monostearate, ethylene glycol monostearate, sorbitan esters.
- Suitable sorbitan esters include sorbitan monostearate, sorbitan palmitate, sorbitan monolaurate, sorbitan monomyristate, sorbitan monobehenate, sorbitan mono-oleate, sorbitan dilaurate, sorbitan distearate, sorbitan dibehenate, sorbitan dioleate, and also mixed tallowalkyl sorbitan mono- and di-esters.
- Glycerol monostearate glycerol mono-oleate, glycerol monopalmitate, glycerol monobehenate, and glycerol distearate are preferred glycerol esters herein.
- Suitable organic silver coating agents include triglycerides, mono or diglycerides, and wholly or partially hydrogenated derivatives thereof, and any mixtures thereof.
- Suitable sources of fatty acid esters include vegetable and fish oils and animal fats.
- Suitable vegetable oils include soy bean oil, cotton seed oil, castor oil, olive oil, peanut oil, safflower oil, sunflower oil, rapeseed oil, grapeseed oil, palm oil and corn oil.
- Waxes including microcrystalline waxes are suitable organic silver coating agents herein.
- Preferred waxes have a melting point in the range from 35°C to 110°C and comprise generally from 12 to 70 carbon atoms.
- Preferred are petroleum waxes of the paraffin and microcrystalline type which are composed of long-chain saturated hydrocarbon compounds.
- Alginates and gelatin are suitable organic silver coating agents herein.
- Dialkyl amine oxides such as C12-C20 methylamine oxide, and dialkyl quaternary ammonium compounds and salts, such as the C12-C20 niethylammonium halides are also suitable.
- suitable organic silver coating agents include certain polymeric materials.
- perfume materials particularly those demonstrating a high substantivity for metallic surfaces, are also useful as the organic silver coating agents herein.
- Polymeric soil release agents can also be used as an organic silver coating agent.
- a preferred organic silver coating agent is a paraffin oil, typically a predominantly branched aliphatic hydrocarbon having a number of carbon atoms in the range of from 20 to 50; preferred paraffin oil selected from predominantly branched C25.45 species with a ratio of cyclic to noncyclic hydrocarbons of from 1 :10 to 2:1, preferably from 1:5 to 1 :1.
- Suitable nitrogen-containing corrosion inhibitor compounds include imidazole and derivatives thereof such as benzimidazole, 2-heptadecyl imidazole and those imidazole derivatives described in Czech Patent No. 139, 279 and British Patent GB-A- 1,137,741, which also discloses a method for making imidazole compounds.
- nitrogen-containing corrosion inhibitor compounds are pyrazole compounds and their derivatives, particularly those where the pyrazole is substituted in any of the 1, 3, 4 or 5 positions by substituents R ⁇ , R3, R4 and R5 where Rj is any of H,
- R3 and R 5 are any of Ci -C 2 o alkyl or hydroxyl, and R4 is any of H, NH2 or NO2.
- nitrogen-containing corrosion inhibitor compounds include benzotriazole, 2-mercaptobenzothiazole, l-phenyl-5-mercapto-l,2,3,4-tetrazole, thionalide, morpholine, melamine, distearylamine, stearoyl stearamide, cyanuric acid, aminotriazole, aminotetrazole and indazole.
- Nitrogen-containing compounds such as amines, especially distearylamine and ammonium compounds such as ammonium chloride, ammonium bromide, ammonium sulphate or diammonium hydrogen citrate are also suitable.
- the detergent tablets may contain an Mn(II) corrosion inhibitor compound.
- the Mn(II) compound is preferably incorporated at a level of from 0.005% to 5% by weight, more preferably from 0.01% to 1%, most preferably from 0.02% to 0.4% by weight of the compositions.
- the Mn(II) compound is incorporated at a level to provide from 0.1 ppm to 250 ppm, more preferably from 0.5 ppm to 50 ppm, most preferably from 1 ppm to 20 ppm by weight of Mn(II) ions in any bleaching solution.
- the Mn (II) compound may be an inorganic salt in anhydrous, or any hydrated forms.
- Suitable salts include manganese sulphate, manganese carbonate, manganese phosphate, manganese nitrate, manganese acetate and manganese chloride.
- the Mn(II) compound may be a salt or complex of an organic fatty acid such as manganese acetate or manganese stearate.
- the Mn(II) compound may be a salt or complex of an organic ligand.
- the organic ligand is a heavy metal ion sequestrant.
- the organic ligand is a crystal growth inhibitor.
- additional corrosion inhibitor compounds include, mercaptans and diols, especially mercaptans with 4 to 20 carbon atoms including lauryl mercaptan, thiophenol, thionapthol, thionalide and thioanthranol. Also suitable are saturated or unsaturated Ci Q- C20 fatty acids, or their salts, especially aluminium tristearate. The C12-C20 hydroxy fatty acids, or their salts, are also suitable. Phosphonated octa-decane and other anti- oxidants such as betahydroxytoluene (BHT) are also suitable.
- BHT betahydroxytoluene
- Copolymers of butadiene and maleic acid particularly those supplied under the trade reference no. 07787 by Polysciences Inc have been found to be of particular utility as corrosion inhibitor compounds.
- Another preferred detergent component for use in the present invention is a hydrocarbon oil, typically a predominantly long chain, aliphatic hydrocarbons having a number of carbon atoms in the range of from 20 to 50; preferred hydrocarbons are saturated and/or branched; preferred hydrocarbon oil selected from predominantly branched C25-45 species with a ratio of cyclic to noncyclic hydrocarbons of from 1 : 10 to 2: 1 , preferably from 1:5 to 1:1.
- a preferred hydrocarbon oil is paraffin.
- a paraffin oil meeting the characteristics as outlined above, having a ratio of cyclic to noncyclic hydrocarbons of 32:68, is sold by Wintershall, Salzbergen, Germany, under the trade name WINOG 70.
- the detergent tablets of the present invention suitable for use in dishwashing methods may contain a water-soluble bismuth compound, preferably present at a level of from 0.005% to 20%, more preferably from 0.01% to 5%, most preferably from 0.1% to 1% by weight of the compositions.
- the water-soluble bismuth compound may be essentially any salt or complex of bismuth with essentially any inorganic or organic counter anion.
- Preferred inorganic bismuth salts are selected from the bismuth trihalides, bismuth nitrate and bismuth phosphate.
- Bismuth acetate and citrate are preferred salts with an organic counter anion.
- Preferred enzyme-containing compositions herein may comprise from 0.001% to 10%, preferably from 0.005% to 8%, most preferably from 0.01% to 6%, by weight of an enzyme stabilizing system.
- the enzyme stabilizing system can be any stabilizing system which is compatible with the detersive enzyme.
- Such stabilizing systems can comprise calcium ion, boric acid, propylene glycol, short chain carboxylic acid, boronic acid, chlorine bleach scavengers and mixtures thereof.
- Such stabilizing systems can also comprise reversible enzyme inhibitors, such as reversible protease inhibitors.
- the tablets of the present invention may contain a lime soap dispersant compound, preferably present at a level of from 0.1% to 40% by weight, more preferably 1% to 20% by weight, most preferably from 2% to 10% by weight of the compositions.
- a lime soap dispersant is a material that prevents the precipitation of alkali metal, ammonium or amine salts of fatty acids by calcium or magnesium ions.
- Preferred lime soap disperant compounds are disclosed in PCT Application No. WO93/08877.
- the detergent tablets of the present invention when formulated for use in machine washing compositions, preferably comprise a suds suppressing system present at a level of from 0.01% to 15%, preferably from 0.05% to 10%, most preferably from 0.1% to 5% by weight of the composition.
- Suitable suds suppressing systems for use herein may comprise essentially any known antifoam compound, including, for example silicone antifoam compounds, 2-alkyl and alcanol antifoam compounds.
- Preferred suds suppressing systems and antifoam compounds are disclosed in PCT Application No. WO93/08876 and EP-A-705 324.
- the detergent tablets herein may also comprise from 0.01% to 10 %, preferably from 0.05% to 0.5% by weight of polymeric dye transfer inhibiting agents.
- the polymeric dye transfer inhibiting agents are preferably selected from polyamine N- oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinylpyrrolidonepolymers or combinations thereof.
- Optical brightener The detergent tablets suitable for use in laundry washing methods as described herein, also optionally contain from 0.005% to 5% by weight of certain types of hydrophilic optical brighteners.
- Hydrophilic optical brighteners useful herein include those having the structural formula:
- R is selected from anilino, N-2-bis-hydroxyethyl and NH-2-hydroxyethyl
- R2 is selected from N-2-bis-hydroxyethyl, N-2-hydroxyethyl-N-methylamino, morphilino, chloro and amino
- M is a salt-forming cation such as sodium or potassium.
- the brightener is 4,4',-bis[(4-anilino-6-(N-2-bis-hydroxyethyl)-s-triazine- 2-yl)amino]-2,2'-stilbenedisulfonic acid and disodium salt.
- This particular brightener species is commercially marketed under the tradename Tinopal-UNPA-GX by Ciba- Geigy Corporation. Tinopal-UNPA-GX is the preferred hydrophilic optical brightener useful in the detergent compositions herein.
- R ⁇ is anilino
- R2 is N-2-hydroxyethyl-N-2-methylarnino
- M is a cation such as sodium
- the brightener is 4,4'-bis[(4-anilino-6-(N-2-hydroxyethyl- N-methylamino)-s-triazine-2-yl)amino]2,2'-stilbenedisulfonic acid disodium salt.
- This particular brightener species is commercially marketed under the tradename Tinopal 5BM-GX by Ciba-Geigy Corporation.
- R ⁇ is anilino
- R2 is morphilino
- M is a cation such as sodium
- the brightener is 4,4'-bis[(4-anilino-6-morphilino-s-triazine-2-yl)amino]2,2'- stilbenedisulfonic acid, sodium salt.
- This particular brightener species is commercially marketed under the tradename Tinopal AMS-GX by Ciba Geigy Corporation.
- the detergent tablets suitable for use in laundry cleaning methods may contain a clay softening system comprising a clay mineral compound and optionally a clay flocculating agent.
- the clay mineral compound is preferably a smectite clay compound.
- Smectite clays are disclosed in the US Patents No.s 3,862,058, 3,948,790, 3,954,632 and 4,062,647.
- European Patents No.s EP-A-299,575 and EP-A-313,146 in the name of the Procter and Gamble Company describe suitable organic polymeric clay flocculating agents.
- Cationic fabric softening agents can also be incorporated into compositions in accordance with the present invention which are suitable for use in methods of laundry washing.
- Suitable cationic fabric softening agents include the water insoluble tertiary amines or dilong chain amide materials as disclosed in GB-A-1 514 276 and EP-B-0 011 340.
- Cationic fabric softening agents are typically incorporated at total levels of from 0.5% to 15%> by weight, normally from 1% to 5% by weight.
- compositions of the invention include perfumes and filler salts, with sodium sulfate being a preferred filler salt.
- the detergent tablets of the present invention are preferably not formulated to have an unduly high pH, in preference having a pH measured as a 1% solution in distilled water of from 8.0 to 12.5, more preferably from 9.0 to 11.8, most preferably from 9.5 to 11.5.
- a preferred machine dishwashing method comprises treating soiled articles selected from crockery, glassware, silverware, metallic items, cutlery and mixtures thereof, with an aqueous liquid having dissolved or dispensed therein an effective amount of a detergent tablet in accord with the invention.
- an effective amount of the detergent tablet it is meant from 8g to 60g of product dissolved or dispersed in a wash solution of volume from 3 to 10 litres, as are typical product dosages and wash solution volumes commonly employed in conventional machine dishwashing methods.
- the detergent tablets are from 15g to 40g in weight, more preferably from 20g to 35g in weight.
- Machine laundry methods herein typically comprise treating soiled laundry with an aqueous wash solution in a washing machine having dissolved or dispensed therein an effective amount of a machine laundry detergent tablet composition in accord with the invention.
- an effective amount of the detergent tablet composition it is meant from 40g to 300g of product dissolved or dispersed in a wash solution of volume from 5 to 65 litres, as are typical product dosages and wash solution volumes commonly employed in conventional machine laundry methods.
- a dispensing device is employed in the washing method. The dispensing device is charged with the detergent product, and is used to introduce the product directly into the drum of the washing machine before the commencement of the wash cycle. Its volume capacity should be such as to be able to contain sufficient detergent product as would normally be used in the washing method.
- the dispensing device containing the detergent product is placed inside the drum.
- water is introduced into the drum and the drum periodically rotates.
- the design of the dispensing device should be such that it permits containment of the dry detergent product but then allows release of this product during the wash cycle in response to its agitation as the drum rotates and also as a result of its contact with the wash water.
- the device may possess a number of openings through which the product may pass.
- the device may be made of a material which is permeable to liquid but impermeable to the solid product, which will allow release of dissolved product.
- the detergent product will be rapidly released at the start of the wash cycle thereby providing transient localised high concentrations of product in the drum of the washing machine at this stage of the wash cycle.
- Preferred dispensing devices are reusable and are designed in such a way that container integrity is maintained in both the dry state and during the wash cycle.
- the dispensing device may be a flexible container, such as a bag or pouch.
- the bag may be of fibrous construction coated with a water impermeable protective material so as to retain the contents, such as is disclosed in European published Patent Application No. 0018678.
- it may be formed of a water-insoluble synthetic polymeric material provided with an edge seal or closure designed to rupture in aqueous media as disclosed in European published Patent Application Nos. 0011500, 0011501, 0011502, and 0011968.
- a convenient form of water frangible closure comprises a water soluble adhesive disposed along and sealing one edge of a pouch formed of a water impermeable polymeric film such as polyethylene or polypropylene.
- PEG 3000 Polyethylene Glycol molecular weight approximately
- the following illustrates examples detergent tablets of the present invention suitable for use in a dishwashing machine.
- the multi-phase tablet compositions are prepared as follows.
- the detergent active composition of phase 1 is prepared by admixing the granular and liquid components and is then passed into the die of a conventional rotary press.
- the press includes a punch suitably shaped for forming the mould.
- the cross-section of the die is approximately 30x38 mm.
- the composition is then subjected to to a compression force of 940 kg/cm 2 and the punch is then elevated exposing the first phase of the tablet containing the mould in its upper surface.
- the detergent active composition of phase 2 is prepared in similar manner and is passed into the die.
- the particulate active composition is then subjected to a compression force of 170 kg/cm 2 , the punch is elevated, and the multi-phase tablet ejected from the tablet press.
- the resulting tablets dissolve or disintegrate in a washing machine as described above within 12 minutes, phase 2 of the tablets dissolving within 5 minutes.
- the tablets provide excellent dissolution and cleaning characteristics together with good tablet integrity and strength.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Molecular Biology (AREA)
- Emergency Medicine (AREA)
- Detergent Compositions (AREA)
- Cosmetics (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9815525.2A GB9815525D0 (en) | 1998-07-17 | 1998-07-17 | Detergent tablet |
GB9815525 | 1998-07-17 | ||
GB9911264A GB2339792B (en) | 1998-07-17 | 1999-05-17 | Detergent tablet |
GB9911264 | 1999-05-17 | ||
PCT/US1999/014863 WO2000004124A2 (en) | 1998-07-17 | 1999-07-09 | Detergent tablet |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1097192A2 true EP1097192A2 (en) | 2001-05-09 |
EP1097192B1 EP1097192B1 (en) | 2003-06-25 |
Family
ID=26314051
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99305387A Expired - Lifetime EP0979866B1 (en) | 1998-07-17 | 1999-07-07 | Detergent tablet |
EP99933627A Expired - Lifetime EP1097192B1 (en) | 1998-07-17 | 1999-07-09 | Detergent tablet |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99305387A Expired - Lifetime EP0979866B1 (en) | 1998-07-17 | 1999-07-07 | Detergent tablet |
Country Status (21)
Country | Link |
---|---|
EP (2) | EP0979866B1 (en) |
JP (1) | JP2002520479A (en) |
CN (1) | CN1309692A (en) |
AT (4) | ATE338808T1 (en) |
AU (1) | AU4964499A (en) |
BR (1) | BR9912157A (en) |
CA (1) | CA2333468C (en) |
DE (5) | DE29911484U1 (en) |
DK (1) | DK0979866T3 (en) |
ES (4) | ES2173707T3 (en) |
FI (1) | FI4408U1 (en) |
FR (1) | FR2782090B1 (en) |
IE (1) | IES990572A2 (en) |
IT (2) | ITMI991511A1 (en) |
NL (1) | NL1012585C1 (en) |
PL (1) | PL346179A1 (en) |
PT (1) | PT979866E (en) |
RU (1) | RU2208628C2 (en) |
SK (1) | SK602001A3 (en) |
TR (1) | TR200100096T2 (en) |
WO (1) | WO2000004124A2 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69911623T2 (en) * | 1998-07-17 | 2004-07-01 | The Procter & Gamble Company, Cincinnati | detergent tablet |
DE69901211T2 (en) * | 1998-07-17 | 2002-11-14 | The Procter & Gamble Company, Cincinnati | detergent tablet |
DE29911484U1 (en) * | 1998-07-17 | 2000-02-24 | The Procter & Gamble Co., Cincinnati, Ohio | Detergent tablet |
DE69908139T2 (en) * | 1998-07-17 | 2004-04-08 | The Procter & Gamble Company, Cincinnati | Detergent tablets and their manufacture |
GB9815525D0 (en) * | 1998-07-17 | 1998-09-16 | Procter & Gamble | Detergent tablet |
DE19922578C2 (en) * | 1999-05-17 | 2003-12-24 | Benckiser Nv | Process for the production of a multilayer tablet, in particular detergent tablet, and product which can be produced thereafter |
EP1162257B1 (en) * | 2000-06-09 | 2006-02-22 | The Procter & Gamble Company | A process of treating fabrics with a detergent tablet comprising an ion exchange resin |
DE10053416A1 (en) | 2000-10-27 | 2002-05-08 | Bsh Bosch Siemens Hausgeraete | Process for the mechanical cleaning of textiles or solid objects |
DE20320615U1 (en) * | 2002-02-26 | 2005-01-13 | Rational Ag | Detergents for cooking utensils in tabular form |
DE102011107684A1 (en) * | 2011-07-13 | 2013-01-17 | Budich International Gmbh | Chlorinated detergent tablet for toilets |
CN102965223B (en) * | 2012-11-26 | 2014-01-08 | 吴金龙 | Nano-multifunctional washing sheet |
CA3148620C (en) | 2019-09-23 | 2024-05-28 | Ecolab Usa Inc. | Color changing detergent compositions and methods of use |
EP3825392A1 (en) | 2019-11-21 | 2021-05-26 | Dalli-Werke GmbH & Co. KG | Detergent tablet comprising an effervescent system |
EP4166638A1 (en) | 2021-10-13 | 2023-04-19 | CLARO Products GmbH | Cleaning tablet for cleaning spectacles |
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US4460490A (en) * | 1980-12-18 | 1984-07-17 | Jeyes Group Limited | Lavatory cleansing blocks |
DE3541146A1 (en) * | 1985-11-21 | 1987-05-27 | Henkel Kgaa | MULTILAYERED DETERGENT TABLETS FOR MACHINE DISHWASHER |
GB9015503D0 (en) * | 1990-07-13 | 1990-08-29 | Unilever Plc | Detergent composition |
US5133892A (en) * | 1990-10-17 | 1992-07-28 | Lever Brothers Company, Division Of Conopco, Inc. | Machine dishwashing detergent tablets |
GB9022724D0 (en) * | 1990-10-19 | 1990-12-05 | Unilever Plc | Detergent compositions |
ATE198349T1 (en) * | 1995-07-13 | 2001-01-15 | Benckiser Nv | DISHWASHER DETERGENT IN THE FORM OF A TABLET |
US5837663A (en) * | 1996-12-23 | 1998-11-17 | Lever Brothers Company, Division Of Conopco, Inc. | Machine dishwashing tablets containing a peracid |
US5900395A (en) * | 1996-12-23 | 1999-05-04 | Lever Brothers Company | Machine dishwashing tablets containing an oxygen bleach system |
GB9711829D0 (en) * | 1997-06-06 | 1997-08-06 | Unilever Plc | Detergent compositions |
GB2327949A (en) * | 1997-08-02 | 1999-02-10 | Procter & Gamble | Detergent tablet |
DE19739384A1 (en) * | 1997-09-09 | 1999-03-11 | Henkel Kgaa | Detergent tablets with improved solubility |
CA2309252C (en) * | 1997-11-10 | 2003-12-30 | The Procter & Gamble Company | Process for preparing a detergent tablet |
WO1999024549A1 (en) * | 1997-11-10 | 1999-05-20 | The Procter & Gamble Company | Multi-layer detergent tablet having both compressed and non-compressed portions |
BR9814022A (en) * | 1997-11-10 | 2000-09-26 | Procter & Gamble | Detergent tablet |
WO1999027069A1 (en) * | 1997-11-26 | 1999-06-03 | The Procter & Gamble Company | Detergent tablet |
CA2311715C (en) * | 1997-11-26 | 2004-09-21 | The Procter & Gamble Company | Detergent tablet |
ATE317002T1 (en) * | 1997-11-26 | 2006-02-15 | Procter & Gamble | DETERGENT TABLET |
US6391845B1 (en) * | 1997-11-26 | 2002-05-21 | The Procter & Gamble Company | Detergent tablet |
DE19758176A1 (en) * | 1997-12-30 | 1999-07-01 | Henkel Kgaa | Dishwasher detergent tablets with surfactants |
DE19758177A1 (en) * | 1997-12-30 | 1999-07-01 | Henkel Kgaa | Process for producing a dishwasher detergent tablet |
DE19758175A1 (en) * | 1997-12-30 | 1999-07-01 | Henkel Kgaa | Dishwasher detergent tablets with specific solubility |
DE29811135U1 (en) * | 1998-06-24 | 1998-08-13 | Brandenburger, Hardie, 42329 Wuppertal | cleaning supplies |
CA2337408C (en) * | 1998-07-17 | 2005-11-15 | The Procter & Gamble Company | A multi-phase detergent tablet |
DE69911623T2 (en) * | 1998-07-17 | 2004-07-01 | The Procter & Gamble Company, Cincinnati | detergent tablet |
ES2224681T3 (en) * | 1998-07-17 | 2005-03-01 | THE PROCTER & GAMBLE COMPANY | DETERGENT TABLET. |
DE29911484U1 (en) * | 1998-07-17 | 2000-02-24 | The Procter & Gamble Co., Cincinnati, Ohio | Detergent tablet |
DE69908139T2 (en) * | 1998-07-17 | 2004-04-08 | The Procter & Gamble Company, Cincinnati | Detergent tablets and their manufacture |
DE69901211T2 (en) * | 1998-07-17 | 2002-11-14 | The Procter & Gamble Company, Cincinnati | detergent tablet |
-
1999
- 1999-07-01 DE DE29911484U patent/DE29911484U1/en not_active Expired - Lifetime
- 1999-07-07 DK DK99305387T patent/DK0979866T3/en active
- 1999-07-07 DE DE69908604T patent/DE69908604T2/en not_active Expired - Fee Related
- 1999-07-07 AT AT03003528T patent/ATE338808T1/en not_active IP Right Cessation
- 1999-07-07 EP EP99305387A patent/EP0979866B1/en not_active Expired - Lifetime
- 1999-07-07 AT AT01104425T patent/ATE242311T1/en not_active IP Right Cessation
- 1999-07-07 ES ES99305387T patent/ES2173707T3/en not_active Expired - Lifetime
- 1999-07-07 IE IE19990572A patent/IES990572A2/en not_active IP Right Cessation
- 1999-07-07 AT AT99305387T patent/ATE213767T1/en not_active IP Right Cessation
- 1999-07-07 PT PT99305387T patent/PT979866E/en unknown
- 1999-07-07 DE DE69933143T patent/DE69933143T2/en not_active Expired - Fee Related
- 1999-07-07 ES ES03003528T patent/ES2272825T3/en not_active Expired - Lifetime
- 1999-07-07 ES ES01104425T patent/ES2199905T3/en not_active Expired - Lifetime
- 1999-07-07 DE DE69900931T patent/DE69900931T2/en not_active Expired - Fee Related
- 1999-07-09 AT AT99933627T patent/ATE243737T1/en not_active IP Right Cessation
- 1999-07-09 CN CN99808777.7A patent/CN1309692A/en active Pending
- 1999-07-09 IT IT001511A patent/ITMI991511A1/en unknown
- 1999-07-09 RU RU2001104452/04A patent/RU2208628C2/en not_active IP Right Cessation
- 1999-07-09 JP JP2000560223A patent/JP2002520479A/en active Pending
- 1999-07-09 WO PCT/US1999/014863 patent/WO2000004124A2/en active IP Right Grant
- 1999-07-09 BR BR9912157-3A patent/BR9912157A/en not_active IP Right Cessation
- 1999-07-09 DE DE69909095T patent/DE69909095T2/en not_active Expired - Fee Related
- 1999-07-09 CA CA002333468A patent/CA2333468C/en not_active Expired - Fee Related
- 1999-07-09 SK SK60-2001A patent/SK602001A3/en unknown
- 1999-07-09 PL PL99346179A patent/PL346179A1/en unknown
- 1999-07-09 TR TR2001/00096T patent/TR200100096T2/en unknown
- 1999-07-09 EP EP99933627A patent/EP1097192B1/en not_active Expired - Lifetime
- 1999-07-09 AU AU49644/99A patent/AU4964499A/en not_active Abandoned
- 1999-07-09 ES ES99933627T patent/ES2201741T3/en not_active Expired - Lifetime
- 1999-07-13 NL NL1012585A patent/NL1012585C1/en not_active IP Right Cessation
- 1999-07-15 IT IT1999MI001567A patent/ITMI991567A1/en unknown
- 1999-07-16 FI FI990322U patent/FI4408U1/en not_active IP Right Cessation
- 1999-07-16 FR FR9909288A patent/FR2782090B1/en not_active Expired - Fee Related
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Title |
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