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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/88—Ampholytes; Electroneutral compounds
  • C11D1/94—Mixtures with anionic, cationic or non-ionic 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/82—Compounds containing silicon
• • 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
• • 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
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0036—Soil deposition preventing compositions; Antiredeposition 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/04—Water-soluble compounds
  • C11D3/08—Silicates
• • 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
  • C11D3/04—Water-soluble compounds
  • C11D3/10—Carbonates ; Bicarbonates
• • 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
  • C11D1/75—Amino oxides
• • 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
  • C11D1/88—Ampholytes; Electroneutral compounds
  • C11D1/90—Betaines
• • 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
  • C11D1/88—Ampholytes; Electroneutral compounds
  • C11D1/92—Sulfobetaines ; Sulfitobetaines

Definitions

• the present invention relates to a solid laundry detergent composition, more specifically to solid laundry detergent composition comprising low levels of alkaline builders.
• builders such as zeolite, silicates and carbonate, are incorporated into the composition. These builders sequester free calcium and magnesium cations. In addition to its role as builder the carbonate and silicate builders also increase the pH of the wash liquor which is beneficial at removing stains.
• US2018094228A1 discloses a solid free flowing particulate laundry detergent composition having a low pH profile and providing good cleaning profile and good fabric care profile.
• the composition includes anionic surfactant, 0 to 8 wt.% levels of sodium carbonate, 0 to 8 wt.% sodium silicate.
• a solid laundry detergent composition that comprise an anionic surfactant, low carbonate levels and preferably low silicate levels, while maintaining excellent cleaning performance. It is also desired to provide a solid laundry detergent composition with a pH from 7 to 10.5 which provides benefits such as low or no deposition of residues on fabrics and associated improvement in whiteness, improved bleachable stain removal benefits.
• the present inventors have surprising found that the fabric care benefits and stain removal performance of solid laundry detergent composition having low carbonate levels and low silicate levels can be achieved in the composition by combination of an anionic surfactant with amphoteric surfactant and a silicone surfactant.
• a solid detergent composition comprising:
• an anionic surfactant, amphoteric surfactant and a silicone surfactant or derivatives thereof in a detergent composition comprising from 0 wt.% to 20 wt.% carbonate salt and 0 wt.% to 10 wt.% silicate salt to provide improved stain removal performance.
• a solid detergent composition according to the present disclosure encompasses a variety of spray-dried or granulated forms including, for example powder, particulates; cast and extruded forms including, for example, solids, pellets, blocks, bars, and tablets.
• solid refers to the state of the detergent composition under the expected conditions of storage and use of the solid detergent composition. In general, it is expected that the detergent composition will remain a solid when provided at a temperature of up to about 37° C and preferably greater than 50°C.
• Suitable anionic surfactant includes, for example, the alkyl benzene sulphonic acids and their salts, alkoxylated or non-alkoxylated alkyl sulfate.
• the anionic surfactant may be present in the form of acid or in neutralized salt form.
• the anionic surfactant may be liner, branched or combinations thereof.
• Nonlimiting examples of anionic surfactants useful herein include: C 10 to C 20 primary, branched chain and random alkyl sulfates (AS); C 10 to C 18 secondary (2,3) alkyl sulfates; C 10 to C 18 alkyl alkoxy sulfates (AES) wherein x is from 1-30; C 10 to C 18 alkyl alkoxy carboxylates comprising 1 to 5 ethoxy units; mid-chain branched alkyl sulfates as discussed in US 6,020,303 and US 6,060,443 ; mid-chain branched alkyl alkoxy sulfates as discussed in US 6,008 , 181 and US 6,020,303 ; modified alkylbenzene sulfonate (MLAS) as discussed in WO 99/05243 , WO 99/05242 and WO 99/05244 ; methyl ester sulfonate (MES); and alpha-olefin sulfonate (
• Exemplary anionic surfactants are the alkali metal salts of C 10 to C 18 alkyl benzene sulfonic acids, preferably C 11 to C 14 alkyl benzene sulfonic acids.
• the alkyl group is linear.
• Such linear alkyl benzene sulfonates are known as "LAS".
• Such surfactants and their preparation are described for example in U.S. Patent Nos. 2,220,099 and 2,477,383 .
• Especially preferred are the sodium and potassium linear straight chain alkylbenzene sulfonates in which the average number of carbon atoms in the alkyl group is from about 11 to 14.
• Sodium C 11 to C 14 LAS e.g., C 12 LAS, are a specific example of such surfactants.
• R' is C 10 to C 18 alkyl
• n is from about 1 to 15
• M is sodium, potassium, ammonium, alkylammonium, or alkanolammonium.
• R' is a C 12 to C 16 from about 1 to 6 and M is sodium.
• Non-ethoxylated alkyl sulfates may also be added separately to the compositions of this invention.
• Specific examples of non-alkoxylated, e.g., non-ethoxylated, alkyl ether sulfate surfactants are those produced by the sulfation of higher C 8 to C 20 fatty alcohols.
• R"OSO 3 - M + Conventional primary alkyl sulfate surfactants have the general formula: R"OSO 3 - M + wherein R" is typically a C 8 to C 20 alkyl (linear or branched, saturated or unsaturated) group, which may be straight chain or branched chain, and M is a water-solubilizing cation.
• R" is a C 10 to C 15 alkyl group
• M is alkali metal, more specifically R" is C 12 to C 14 alkyl and M is sodium. Examples include sodium lauryl sulphate, ammonium lauryl sulphate and sodium coco sulphate.
• anionic surfactants useful herein include a) C 11 to C 18 alkyl benzene sulfonates (LAS); b) C 10 to C 20 primary, branched-chain and random alkyl sulfates (AS); c) C 10 to C 18 secondary (2,3)-alkyl sulfates having following formulae: wherein M is hydrogen or a cation which provides charge neutrality, and all M units, whether associated with a surfactant or adjunct ingredient, can either be a hydrogen atom or a cation depending upon the form isolated by the artisan or the relative pH of the system wherein the compound is used, with non-limiting examples of preferred cations including sodium, potassium, ammonium, and mixtures thereof, and x is an integer of at least about 7, preferably at least about 9, and y is an integer of at least 8, preferably at least about 9; d) C 10 to C 18 alkyl alkoxy sulfates (AES) wherein preferably z is from 1
• LAS alky
• Patent Nos. 6,020,303 and 6,060,443 g) mid-chain branched alkyl alkoxy sulfates as discussed in U.S. Patent Nos. 6,008,181 and 6,020,303 ; h) modified alkylbenzene sulfonate (MLAS) as discussed in WO 99/05243 , WO 99/05242 , WO 99/05244 , WO 99/05082 , WO 99/05084 , WO 99/05241 , WO 99/07656 , WO 00/23549 , and WO 00/23548 . ; i) methyl ester sulfonate (MES); and j) alphaolefin sulfonate (AOS).
• MLAS modified alkylbenzene sulfonate
• MES methyl ester sulfonate
• AOS alphaolefin sulfonate
• Anionic surfactants may exist in an acid form and the acid form may be neutralized to form a surfactant salt.
• Typical agents for neutralization include a metal counter ion base such as a hydroxide, e.g., NaOH or KOH.
• Further agents for neutralizing anionic surfactants include ammonia, amines, or alkanolamines. Suitable non-limiting examples include monoethanolamine, diethanolamine, triethanolamine, and other linear or branched alkanolamines known in the art, for example, 2-amino-1-propanol, 1-aminopropanol, monoisopropanolamine, or 1-amino-3-propanol.
• Amine neutralization may be done to a full or partial extent, e.g. part of the anionic surfactant mix may be neutralized with sodium or potassium and part of the anionic surfactant mix may be neutralized with amines or alkanolamines.
• the anionic surfactant is a non-soap anionic surfactant.
• the term "soap” is used herein in its popular sense, i.e., the alkali metal or alkanol ammonium salts of aliphatic, alkanes, or alkene monocarboxylic acids. Sodium, potassium, magnesium, mono-, di- and tri-ethanol ammonium cations, or combinations thereof, are the most suitable for purposes of this invention.
• the anionic surfactant is selected from alkyl sulphate surfactant, alkyl sulphonate surfactant, alkyl ether sulphonate surfactant or combinations thereof.
• alkyl sulphate surfactant alkyl sulphonate surfactant
• alkyl ether sulphonate surfactant alkyl sulphonate surfactant or combinations thereof.
• Non-limiting examples of the preferred anionic surfactant includes linear alkyl benzene sulphonate, lauryl ether sulfate, primary alkyl sulfate, methyl ester sulphonate or combinations thereof.
• the anionic surfactant includes 0 wt.% to 10 wt.% alkyl sulfates, preferably 0 wt.% to 5 wt.% alkyl sulfates, preferably PAS.
• the anionic surfactant may also include from 0 wt.% to 10 wt.% MES, preferably 0 wt.% to 5 wt.% MES.
• the anionic surfactant may be an SLES, preferably included in the composition in an amount from 0 wt.% to 10 wt.%, preferably 0 wt.% to 5 wt.%.
• the detergent composition of the present invention includes from 2 wt.% to 50 wt.% of an anionic surfactant, still preferably 2 wt.% to 40 wt.% anionic surfactant.
• the detergent composition comprises at least 4 wt.%, still preferably at least 5 wt.%, still preferably at least 10 wt.%, most preferably at least 15 wt.% of the anionic surfactant, but typically not more than 45 wt.%, still preferably not more than 40 wt.%, still further preferably not more than 35 wt.%, still more preferably not more than 30 wt.% and most preferably not more than 20 wt.% of an anionic surfactant based on the weight of the detergent composition.
• the detergent composition according to the present invention includes a silicone surfactant.
• the silicone surfactant comprises a hydrophobic silicone group and a pendant hydrophilic group.
• the silicone surfactant has a polysiloxane group which is modified.
• the polysiloxane hydrophobic group is modified with one or more pendant hydrophilic polyalkylene oxide groups.
• It may also preferably be a polybetaine-modified polysiloxane surfactant having a polysiloxane hydrophobic group modified with polybetaine group which is preferably grafted through hydrosilation reaction.
• Preferred silicone surfactant which can be used according to the present invention includes polydialkyl siloxane, preferably polydimethyl siloxane to which a hydrophilic group(s), such as polyethylene oxide, has been grafted through a hydrosilation reaction.
• a hydrophilic group(s) such as polyethylene oxide
• the process results in an alkyl pendant (AP type) copolymer, in which the hydrophilic groups are attached along the siloxane backbone through a series of hydrolytically stable Si-C bond.
• the silicone surfactant is a polydialkyl siloxane surfactant which has the general formula (I) or (II) as given herein below: wherein PE represents a nonionic group.
• PE is represented as -CH 2 -(CH 2 ) p -O-(EO) m (PO) n -Z, ..
• PE may also be represented as preferably PE is represented as
• the R is hydrogen, methyl or butyl and the weight ratio of EO:PO is from 100:0 to 40:60.
• the weight ratio in percentage of EO (C 2 H 4 O, ethyleneoxy) to PO C 3 H 6 O, propyleneoxy) may vary from 100:0 to 0:100.
• a preferred silicone surfactant having the above formula includes x + y of 24 to 30, y of 4 to 7, the ratio of a/b being 0.25, R being H, PA having a molecular weight of between 800 and 950, and the silicone surfactant having a molecular weight of between 5,500 and 6,500.
• a preferred silicone surfactant satisfying these criteria is available under the name ABIL ® B 8852.
• a preferred silicone betaine surfactant is provided where x + y is 6 to 21, y is 4 to 7, and the molecular weight of the silicone betaine surfactant is between 2,000 and 3,000.
• a silicone surfactant generally satisfying this criteria is available under the name ABIL ® B 9950.
• AEB type silicone surfactant Another class of preferred silicone surfactant is an end-blocked (AEB type).
• a preferred AEB type silicone surfactant is available under the name ABIL ® EM 97.
• the silicone surfactant is a trisiloxane based surfactant having the formula wherein R 1 and R 2 are each independently an alkyl having 1 to 3 carbon atoms or C n H 2n O[C 2 H 4 O] y [C 3 H 6 O], Q provided R 1 and R 2 are not the same, "a” is 0 to 2, "n” has a value from 2 to 4; “y” has a value of 3 to 10; “z” has a value from 0 to 5; Q is selected from the group consisting of hydrogen and a branched or straight chain alkyl having 1 to 4 carbon atoms.
• a is 0 to 1
• n is 2 to 4
• "y” is 5 to 9
• Z is 0 to 3
• Q is a 1 to 3 straight alkyl.
• Preferred silicone surfactant includes but is not limited to 1,1,1,3,5,5,5-heptamethyl trisiloxane, polyalkylene oxide modified, 1,1,3,3,5,5,5-heptamethyl trisiloxane, polyalklyene oxide modified, or 1,1,3,3,3 pentamethyl disiloxane, polyalkylene oxide modified.
• Silicone surfactants herein described are commercially available under the tradename SILWET ® and includes Silwet L-77 (from Supreme Silcione) or polyether or polybetaine polysiloxane copolymer under the tradename ABIL ® .
• Preferred silicone surfactants are sold under the SILWET trademark or under the ABIL ® B trademark.
• the silicone surfactant can be provided in the detergent composition of the invention in an amount from 0.05 wt. % to 20 wt. %, preferably 0.1 wt.5 to 10 wt.5 of the composition.
• the solid detergent composition according to the present invention comprises from 0.05 wt.% to 10 wt.% silicone surfactant.
• the solid detergent composition comprises at least 0.8 wt.%, preferably at least 0.1 wt.%, still preferably at least 0.15 wt.% and most preferably at least 0.2 wt.%, but typically not more than 4 w.t%, still preferably not more than 3 wt.%, still further preferably not more than 2 wt.% and most preferably not more than 1 wt.%.
• composition includes an amphoteric surfactant.
• amphoteric includes (a) molecules that contain both an acidic and basic site such as, for example, an amino acid containing both amino (basic) and acid (e.g., carboxylic acid, acidic) functional groups; or (b) zwitterionic molecules which possess both positive and negative charges within the same molecule.
• the charges of the zwitterionic molecule may be either dependent or independent of the pH of the composition.
• amphoteric surfactant as used herein, is also intended to encompass zwitterionic Surfactants, which are well known to formulators skilled in the art as a subset of amphoteric surfactants.
• amphoteric surfactants include those given hereinbelow.
• amphoteric surfactant is preferably selected from the group consisting of betaines, sultaines, amine oxide or mixtures thereof.
• a preferred amphoteric surfactant is the betaine type surfactant.
• the betaine type amphoteric surfactant has a permanent negative charge and positive charge on the same molecule which does not alter with change in the pH and not having an isoelectric point. They are quaternized derivatives.
• R C 8 -C 34 alkyl (saturated or unsaturated) or mixtures thereof.
• the amphoteric surfactant is Cocamidopropyl Betaine (CAPB).
• the cocamidopropyl Betaine is commercially available from Rhone-Poulenc as Mirataine BDJ, Galaxy, Huntsman.
• R C 8 -C 34 alkyl (saturated or unsaturated) or mixtures thereof.
• R C 8 -C 34 alkyl (saturated or unsaturated) or mixtures thereof.
• RCO C 6 to C 24 acyl (saturated or unsaturated) or mixtures thereof.
• R 1 R 2 R 3 N ⁇ O wherein R 1 is typically C 6 to C 24 alkyl (saturated or unsaturated) or mixtures thereof. Preferably C 8 to C 18 alkyl group, for example, C 12 to C 14 alkyl.
• amphoteric surfactant according to the present invention includes those wherein the degree of ionisation varies as a function of pH of the medium it is in. These have an isoelectric point (IEP) in the range from 3.5 to 6.5.
• IEP isoelectric point
• Preferred amphoteric surfactant may also be selected from internally-neutralized derivatives of aliphatic quaternary ammonium and phosphonium and tertiary sulfonium compounds in which the aliphatic radical can be straight chain or branched, and wherein one of the aliphatic substituents contains from 8 to 18 carbon atoms and one contains an anionic water solubilizing group.
• amphoteric surfactant is selected from the group consisting of betaines, sultaines, amine oxide, alkyl iminoacetates, imino dialkanoates, amino alkanoates alkyl ammonium propionates, or mixtures thereof. More preferably the amphoteric surfactant are betaines or amine oxide.
• the betaine type amphoteric surfactant is selected from alkyl betaines, alkylamidoalkyl betaines and alkyl sulphobetaines.
• the amine oxide type amphoteric surfactant is selected from alkyl amine oxide, alkylamidoalkyl amine oxide or mixtures thereof.
• amphoteric surfactant is a cocamidopropyl betaine (CAPB).
• CAPB cocamidopropyl betaine
• the detergent composition of the present invention includes from 0.2 wt.% to 5 wt.% of an amphoteric surfactant.
• the detergent composition comprises at least 0.2 wt.%, still preferably at least 0.3 wt.%, still preferably at least 0.4 wt.%, most preferably at least 0.5 wt.% of the amphoteric surfactant, but typically not more than 4 wt.%, still preferably not more than 3.5 wt.%, still further preferably not more than 3 wt.%, still more preferably not more than 2.5 wt.% and most preferably not more than 1 wt.% of an amphoteric surfactant based on the weight of the detergent composition.
• the ratio of the anionic surfactant to the amphoteric surfactant is in a ratio from 0.4:1 to 200:1, still preferably the ratio is from 5:1 to 100:1, In the detergent composition of the present invention the total amount of anionic surfactant is greater than the amphoteric surfactant present in the composition.
• Disclosed detergent composition includes from 0 wt.% to 20 wt.% carbonate salt.
• the carbonate salt includes alkaline earth metal and alkali metal carbonates or mixtures thereof.
• the carbonate salt is preferably an alkali metal carbonate, alkaline earth metal carbonate or mixtures thereof.
• Preferred alkali carbonates are sodium and/or potassium carbonate of which sodium carbonate is particularly preferred. It is further preferred that sodium carbonate makes up at least 75 wt.%, more preferably at least 85 wt.% and even more preferably at least 90 wt.% of the total weight of the carbonate salt.
• the detergent composition of the present invention includes from 0 wt.% to 20 wt.% carbonate salt.
• the detergent composition comprises at least 0.8 wt.%, still preferably at least 1 wt.%, still preferably at least 2 wt.%, most preferably at least 5 wt.% of the carbonate salt, but typically not more than 15 wt.%, still preferably not more than 13 wt.%, most preferably not more than 10 wt.% of carbonate salt based on the weight of the detergent composition.
• the composition of the present invention is substantially free of carbonate salt. By substantially free it is meant that there is no deliberately added carbonate salt in the composition.
• the detergent composition of the present invention may preferably include a further non-carbonate builder.
• the preferred inorganic non-carbonate builders may be selected from the group consisting of silicates, silica, zeolites, phosphates or mixtures thereof.
• Yet other non-carbonate builder may be organic builders which includes but are not limited to as succinates, carboxylates, malonates, polycarboxylates, citric acid or a salt thereof.
• Silicates are preferably present in the detergent compositions in accord with the invention at a level from 0 wt.% to 10 wt.% by weight of the composition, more preferably from 0 wt.% to 7 wt.% in the detergent composition.
• composition of the present invention has low or no phosphate builders such as sodium tripolyphosphate or organic phosphonate sequestrant such as amino trimethylene phosphonic acid sodium salt.
• phosphate builders such as sodium tripolyphosphate or organic phosphonate sequestrant such as amino trimethylene phosphonic acid sodium salt.
• composition of the present invention is substantially free of silicate salt, zeolite salt and phosphate builder.
• substantially free it is meant that there is no deliberately added carbonate salt in the composition.
• the composition according to the present invention preferably has a pH from 7.0 to 10.5, preferably 7.0 to 10.2, still preferably from 8.5 to 10.2, when measured at 1 wt.% dilution in de-ionised water at 25°C.
• the composition may preferably include a buffer.
• composition of the present invention is in the solid form.
• the composition according to the present invention may be made via a variety of conventional methods known in the art and those which includes but is not limited to the mixing of ingredients, including dry-mixing, compaction such as agglomerating, extrusion, tabletting, or spray-drying of the various compounds comprised in the detergent component, or mixtures of these techniques, whereby the components herein also can be made by for example compaction, including extrusion and agglomerating, or spray-drying.
• the detergent composition may be made by any of the conventional processes, especially preferred is the technique of slurry making and spray drying.
• compositions herein can take a variety of physical solid forms including forms such as powder, granule, ribbon, noodle, paste, tablet, flake, pastille and bar, and preferably the composition is in the form of powder, granules or a tablet, still preferably the composition is in the form of a powder.
• the composition may be in the form of a unit dose formulation, delayed delivery formulation, detergent contained on or in a porous substrate or nonwoven sheet, and other suitable forms that may be apparent to one skilled in the art in view of the teachings herein.
• the composition according to the present invention may preferably be in a form selected from powder, unit dose or pouch form, tablet, bar, or flake.
• the solid laundry detergent composition according to the present invention is preferably free flowing.
• the composition is preferably a fully formulated detergent composition.
• the solid detergent composition includes but is not limited powder, granular, particulate, agglomerates, noodles, flakes tablets, bar, sheet or other solid forms known in the art and combinations thereof.
• the composition is for manual-washing.
• the composition of the present invention is a solid laundry detergent composition.
• the composition is in the form of a spray -dried powder or particulate free-flowing form.
• compositions preferably have a density of more than 350 grams/litre, more preferably more than 450 grams/litre or even more than 570 grams/litre.
• the solid laundry detergent composition according to the present invention preferably has from 0 wt.% to 8 wt.% zeolite builder.
• the amount of zeolite builder is less than 5 wt.%, still preferably less than 3 wt.%, more preferably less than 2 wt.% by weight in the detergent composition and most preferably the detergent composition is substantially free of zeolite builder.
• the solid laundry detergent composition according to the present invention preferably has from 0 wt.% to 4 wt.% phosphate builder.
• the amount of phosphate builder is less than 3 wt.%, still preferably less than 2 wt.%, more preferably less than 1 wt.% by weight in the detergent composition and most preferably the detergent composition is substantially free of phosphate builder.
• the solid laundry detergent composition according to the present invention preferably includes from 0 wt.% to 6 wt.% bicarbonate salt, preferably sodium bicarbonate.
• the amount of bicarbonate salt is less than 5 wt.%, still preferably less than 2 wt.%, more preferably less than 1 wt.% by weight in the detergent composition and most preferably the detergent composition is substantially free of bicarbonate salt.
• the bicarbonate salt is sodium bicarbonate.
• substantially free means that the indicated component is at the very minimum, not deliberately added to the composition to form part of it, or, more typically, is not present at analytically detectable levels. It is meant to include compositions whereby the indicated material is present only as an impurity in one of the other materials deliberately included.
• the detergent composition of the present invention may preferably include one or more of the optional ingredients selected from the group consisting of cleaning and care ingredients.
• the optional ingredients include one or more adjunct cleaning additives selected from polymers, enzymes, enzyme stabilizer, brightening agents, hueing agent, bleach, chelating agent, humectant, perfume, filler or carrier, an alkalinity system, a buffer or combinations thereof.
• composition of the present invention may preferably include polymers which provide cleaning or care benefits.
• the cleaning polymer includes but is not limited to soil release polymer, carboxylate polymers, antiredeposition polymers, cellulosic polymers, care polymers, amphiphilic alkoxylated grease cleaning polymers, clay soil cleaning polymers, soil suspending polymers or mixtures thereof.
• Suitable carboxylate polymer includes polymers such as a maleate/acrylate random copolymer or polyacrylate homopolymer. Also suitable are polyacrylic acid, polymethacrylic acid, polymaleic acid, copolymers of acrylic acid or methacrylic acid with maleic acid, copolymer of maleic acid with vinyl methyl ether and combinations thereof.
• Anti-redeposition polymers are designed to suspend or disperse soil.
• antiredeposition polymers are polyethylene glycol polymers, polycarboxylate polymers, polyethyleneimine polymers or mixtures thereof.
• Such polymers are available from BASF under the trade name Sokalan ® CP5 (neutralised form) and Sokalan ® CP45 (acidic form).
• Soil release polymers are designed to modify the surface of the fabric to facilitate the ease of removal of soil.
• Suitable soil release polymers are sold by Clariant under the TexCare ® series of polymers, e.g. TexCare ® SRN240, TexCare ® SRN100, TexCare ® SRN170, TexCare ® SRN300, TexCare ® SRN325, TexCare ® SRA100 and TexCare ® SRA300.
• Other suitable soil release polymers are sold by Rhodia under the Repel-o-Tex@ series of polymers, e.g. Repel-o-Tex ® SF2, Repel-o-Tex ® SRP6 and Repel-o-Tex@ Crystal.
• a preferred polymer is selected from the group consisting of polyester soil release polymer, both end-capped and non-end-capped sulphonated PET/POET polymers, both end-capped and non-end-capped unsulphonated PET/POET polymers or combinations thereof.
• the levels of these soil release polymer in the adjunct particle is from 3 wt.% to 15 wt.% at least 5 wt.%, still preferably at least 6 wt.%, still preferably at least 6.5 wt.%, most preferably at least 7 wt.%, but typically not more than 14 wt.%, still preferably not more than 13 wt.%, most preferably not more than 12 wt.%.
• the cleaning composition is preferably substantially free of phosphate based sequestering polymers.
• substantially free it is meant herein that no phosphate based sequestering polymers is deliberately added.
• the composition of the present invention preferably includes an enzyme. It may preferably include one or more enzymes. Preferred examples of the enzymes include those which provide cleaning performance and/or fabric care benefits.
• suitable enzymes include, but are not limited to, hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, xyloglucanase, phospholipases, esterases, cutinases, pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, G-glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof.
• a typical combination is an enzyme cocktail that may comprise, for example, a protease and lipase in conjunction with one or more of amylase, mannanase and cellulase.
• the enzymes When present in a detergent composition, the enzymes may be present at levels from about 0.00001% to about 2%, from about 0.0001 % to about 1% or from 0.001 % to about 0.5% enzyme protein by weight of the detergent composition.
• Suitable proteases include metalloproteases and serine proteases, including neutral or alkaline microbial serine proteases, such as subtilisins (EC 3.4.21.62).
• Suitable commercially available protease enzymes include those sold under the trade names Alcalase ® , Savinase ® , Primase ® , Durazym ® , Polarzyme ® , Kannase ® , Liquanase ® , Liquanase Ultra ® , Savinase Ultra ® , Ovozyme ® , Neutrase ® , Everlase ® and Esperase ® by Novozymes A/S (Denmark), those sold under the tradename Maxatase ® , Maxaca ® l, Maxapem ® , Properase ® , Purafect ® , Purafect Prime ® , Purafect Ox ® , FN3 ® , FN4 ®
• Suitable alpha-amylases include those of bacterial or fungal origin. Suitable commercially available alpha-amylases include DURAMYL ® , LIQUEZYME ® , TERMAMYL ® , TERMAMYL ULTRA ® , NATALASE ® , SUPRAMYL ® , STAINZYME ® , STAINZYME PLUS ® , FUNGAMYL ® and BAN ® (Novozymes A/S, Bagsvaerd, Denmark), 15 KEMZYM ® AT 9000 Biozym Biotech Trading GmbH Wehlistrasse 27b A-1200 Wien Austria, RAPIDASE ® , PURASTAR ® , ENZYSIZE ® , OPTISIZE HT PLUS ® , POWERASE ® and PURASTAR OXAM ® (Genencor International Inc., Palo Alto, California) and KAM ® (Kao, 14-10 Nihonbashi Kaya
• other preferred enzymes include microbial-derived endoglucanases exhibiting endo-beta-1, 4-glucanase activity (E.C. 3.2.L4), including a bacterial polypeptide.
• Suitable endoglucanases are sold under the tradenames Celluclean ® and Whitezyme ® (Novozymes A/S, Bagsvaerd, Denmark).
• Pectate lyases sold under the tradenames Pectawash ® , Pectaway ® , Xpect ® and mannanases sold under the tradenames Mannaway ® (all from Novozymes A/S, Bagsvaerd, Denmark), and Purabrite ® (Genencor International Inc., Palo Alto, California).
• the enzyme-containing compositions described herein may optionally comprise from 0.001 % to 10%, in some examples from about 0.005% to about 8%, and in other examples, from about 0.01 % to about 6%, by weight of the composition, 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, for example, comprise calcium ion, propylene glycol, short chain carboxylic acids, chlorine bleach scavengers and mixtures thereof, and are designed to address different stabilization problems depending on the type and physical form of the cleaning composition.
• Optical brighteners or other brightening or whitening agents may be incorporated at levels from 0.01 % to 1.2%, by weight of the composition.
• Commercial brighteners suitable for the present invention can be classified into subgroups, including but not limited to: derivatives of stilbene, pyrazoline, coumarin, benzoxazoles, carboxylic acid, methinecyanines, dibenzothiophene-5, 5- dioxide, azoles, 5- and 6-membered-ring heterocycles, and other miscellaneous agents.
• Preferred commercially available Brighteners includes Tinopal AMS-GX by Ciba Geigy Corporation, Tinopal UNPA-GX by Ciba-Geigy Corporation, Tinopal 5BM-GX by Ciba-Geigy Corporation.
• the brighteners may be added in particulate form or as a premix with a suitable solvent, for example nonionic surfactant, monoethanolamine, propane diol.
• the composition may comprise a fabric hueing agent (sometimes referred to as shading, bluing or whitening agents).
• the hueing agent provides a blue or violet shade to fabric.
• Hueing agents can be used either alone or in combination to create a specific shade of hueing and/or to shade different fabric types.
• Suitable fabric hueing agents include dyes, dye-clay conjugates, and organic and inorganic pigments.
• a method of laundering a textile surface with the detergent composition according to the first aspect comprising the steps of: (i) preparing a wash liquor by mixing the detergent composition according to the first aspect with a liquid, preferably water; (ii) soaking said textile surface in the wash liquor for a predetermined period of time; and, optionally rinsing the textile surface.
• a third aspect of the present invention is a use of an anionic surfactant, amphoteric surfactant and a silicone surfactant in a detergent composition comprising from 0 wt.% to 20 wt.% carbonate salt and 0 wt.% to 10 wt.% silicate salt to provide improved stain removal performance.
• a spray-dried solid laundry detergent composition according to the present invention was prepared with the formulation as shown in table 1 below.
• Table 1 Ingredients Ex 1 Anionic surfactant 19.78 Amphoteric surfactant (CAPB) 0.5 Silicone surfactant 1.0 Sodium silicate 7.66 Sodium carbonate 9.2 Layering agent 6.71 Antifoam agent Speckles 0.5 Perfume 0.36 Moisture, salt, NDOM and other minor ingredients 2.19 Sodium sulphate filler Upto 100
• composition according to the present invention (Ex 1 ) in table 1 includes an anionic surfactant, amphoteric surfactant and a silicone surfactant in presence of low levels of the carbonate and provides good stain removal performance.

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• 2021
  • 2021-02-01 EP EP21154557.9A patent/EP4036199A1/fr not_active Withdrawn

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