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EP1398368B1 - Compositions de nettoyage - Google Patents

Compositions de nettoyage Download PDF

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Publication number
EP1398368B1
EP1398368B1 EP03077710A EP03077710A EP1398368B1 EP 1398368 B1 EP1398368 B1 EP 1398368B1 EP 03077710 A EP03077710 A EP 03077710A EP 03077710 A EP03077710 A EP 03077710A EP 1398368 B1 EP1398368 B1 EP 1398368B1
Authority
EP
European Patent Office
Prior art keywords
water
tablet
weight
sts
tablet according
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.)
Expired - Lifetime
Application number
EP03077710A
Other languages
German (de)
English (en)
Other versions
EP1398368A1 (fr
Inventor
Jelles Vincent Unilever R&D Vlaardingen Boskamp
Ian Charles Unilever R&D Vlaardingen Callaghan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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Filing date
Publication date
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Priority to EP03077710A priority Critical patent/EP1398368B1/fr
Publication of EP1398368A1 publication Critical patent/EP1398368A1/fr
Application granted granted Critical
Publication of EP1398368B1 publication Critical patent/EP1398368B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or 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
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3418—Toluene -, xylene -, cumene -, benzene - or naphthalene sulfonates or sulfates

Definitions

  • the present invention relates to novel tablets comprising disintegrant granules and to methods for making these. These tablets are intended to disintegrate when placed in water and thus are intended to be consumed in a single use.
  • the tablets may be suitable for use in machine dishwashing, the washing of fabrics or other cleaning tasks.
  • Products in tablet form have several advantages over powdered products: for example, they do not require measuring and are thus easier to handle and to dispense into the wash-load, and they are more compact, hence facilitating more economical storage.
  • Detergent compositions in tablet form and intended for fabric washing have been described in a number of patent documents including, for example GB 911204, EP-A-711827, WO-98/42817 and WO-99/20730 (all Unilever), GB 1,029,263 (Procter & Gamble), US 3953350 (Kao), DE 19 637 606 (Henkel). Tablets of composition suitable for machine dishwashing have been disclosed in EP-A-318204, WO96/23530 WO 02 062 938 and US-A-5691293.
  • Tablets of a cleaning composition are generally made by compressing or compacting a composition in particulate form. Although it is desirable that tablets have adequate strength when dry, they should disperse and dissolve quickly when brought into contact with water and it can be difficult to obtain both properties together. Tablets formed using a low compaction pressure tend to crumble and disintegrate on handling and packing in particular after prolonged storage periods; while more forcefully compacted tablets may be sufficiently cohesive but then fail to disintegrate or disperse to an adequate extent in the wash. Tabletting will often be carried out with enough pressure to achieve a compromise between these desirable but antagonistic properties. However, it remains desirable to improve in particular the storage properties of the tablets.
  • a tablet contains organic surfactant, this can function as a binder, plasticising the tablet. However, it can also retard disintegration of the tablet by forming a viscous gel when the tablet comes into contact with water. Thus, the presence of surfactant can make it more difficult to achieve both good strength and speed of disintegration: the problem has proved especially acute with tablets formed by compressing powders containing surfactant and built with insoluble detergency builder such as sodium aluminosilicate (zeolite).
  • insoluble detergency builder such as sodium aluminosilicate (zeolite).
  • EP-A-711 827 (Unilever) teaches the use of sodium citrate for this purpose and EP-A-838519 and WO 00/32741 (both Unilever) teach the use of sodium acetate trihydrate for this purpose.
  • EP 971028 and EP 971029 disclose the use of a hydrotrope that enhances strength with at least 30 %.
  • STS is indicated as an example hereof we found that when applying STS for this purpose this could not enhance this strength with more than 30 % and thus is STS not part of the disclosure for the use in the granules nor in the base powder of tablets.
  • Typical water-swellable agents which have been disclosed as possible tablet disintegrating agents are starches, cellulose and cellulose derivatives, alginates, dextrans, cross-linked polyvinyl pyrrolidones, gelatines and formaldehyde casein as well as a wide variety of clay minerals and certain ionexchange resins.
  • WO98/55575 and DE 199 01 063 both Henkel teach the use of cellulose disintegrating aids with a particle size of less than 100 um in order to minimise deposition.
  • the cellulose material is mixed with a material of a given oil absorbing capacity, which includes some zeolites.
  • the tablet can contain a component with a cohesive effect such as sodium di-isoalkylbenzenesulphonates this component is not examplified in the examples ,herein the use of 0.5 wt % of STS in the Blown Powder (examples Q,T and U) is indicated but it remains unclear what the function of this STS is.Our tablets are free of a coating and do not contain a Schiff's base in the perfume composition.A similar teaching can be derived from EP 1 035 199 although it is stated herein that the use of a sequestrant in the coating helps to overcome the problems.
  • a particular agent is incorporated into a tablet, either as part of a disintegrating granule or as part of the matrix material or both and the tablet preferably also comprises certain water-soluble disintegration-promoting particles,in addition to non-soap surfactants , and detergency builder, then the storage properties of the tablets are improved considerably.
  • the tablets are made by a specific process , which process comprises mixing disintegrant granules comprising a water-swelling clay, a water-insoluble inorganic material and a water swellable agent and optionally the STS and/or SCS with the other constituents of the detergent composition, optionally comprising the STS and/or SCS to produce a particulate detergent composition comprising STS and/or SCS, placing a quantity of the resultant particulate detergent composition within a mould, and compacting the composition within the mould to produce the tablet.
  • the disintegrant granules also comprise a water-swellable agent which, in its anhydrous state, comprises no more than 20 per cent , preferably 1 to 20 wt %, more preferably 1 to 10 wt % of the combined weight of, the water insoluble material , the STS and / or SCS and the water-swellable agent and if present the swelling clay.
  • a suitable method for carrying out the dry granulation process is a process comprising the blending of the ingredients of the granular composition in a mixer followed by roller compaction of the mixture so produced. During the roller compaction suitable roller pressures of 2 to 25 Mpa are applied. The screening of the granules after the roller compaction is performed to collect particles with size of 500 to 3000 microns, preferably 700 to 1200 microns (measured by sieve analysis).
  • the STS and / or SCS is applied in amounts of 0.5 to 22 wt % on total tablet. If applied in the matrix material the amount of STS and / or SCS ranges from 0.5 to 5 wt % on total tablet and when applied in the granules this amount is 0.15 to 50 wt %.
  • the swelling clay if applied in our tablets, preferably is a bentonite clay.
  • the water insoluble inorganic material is suitably silica, a material containing at least 70 weight per cent silica or a zeolite.
  • the water content of the zeolite can be as high as 22 wt%.
  • Preferred zeolites are zeolite P having a water content in the range of 9 to 12 wt% of the zeolite. In the instance that water swelling clay and zeolite are both applied in the granules it is preferred to use them in a ratio clay : zeolite of 9 : 1 to 1 : 9 by weight.
  • the amounts of water swelling clay repectively water insoluble inorganic material in the granules are respectively 0 to less than 50 wt % and 35 to 70 wt%.
  • Preferred water swellable agents that are applied have a water-swelling capacity of at least 5 cm 3 /g and are selected from the group consisting of cellulose, cross-linked cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, cross-linked sodium carboxymethyl cellulose, pre-gelatinised starch, cross linked starch, or cross linked polyvinyl pyrrolidone Currently preferred are Aquasorb A500 (ex Hercules) and Ac-Di-Sol and Nilyn XL90 (ex FMC Corporation, USA). These water swellable agents are preferably present in the granules in amounts of less than 2 wt% (on total tablet).
  • the tablets according to the present invention may be either homogeneous or heterogeneous.
  • the term “homogeneous” is used to mean a tablet produced by compaction of a single particulate composition, but does not imply that all the particles of that composition will be of identical composition.
  • the term “heterogeneous” is used to mean a tablet consisting of a plurality of discrete regions, for example layers, inserts or coatings, each derived by compaction from a particulate composition.
  • each discrete region of the tablet will preferably have a mass of at least 5 grams.
  • the water-swellable agent which is present comprises in its anhydrous state 1 to 20% by weight of the combined weight of said water insoluble inorganic material, said STS and/or SCS, said water-swellable agent and said water swelling clay, if present.
  • water-insoluble in relation to the inorganic material, is meant a compound with a solubility in water at 25°C of less than 5 grams per 100 grams of water, preferably less than 1 gram per 100 grams of water.
  • we make tablets wherein the relative amount of the water-swelling clay and the water-insoluble inorganic material , other than zeolites in the disintegrant granule is in the weight ratio range of the water-swelling clay: water-insoluble inorganic material of from 0 to 2:1 by weight.
  • composition according to the invention comprises an alkali metal aluminosilicate as a detergency builder
  • at least a part of the aluminosilicate constituent of the cleaning composition is employed as the inorganic material used in the formation of the disintegrant granules.
  • the tablets will in general contain 0.5 to 22 wt % (on total tablet) of the STS and/or SCS. If the STS and/or SCS is present in the matrix material the amount thereof will be 0.5 to 5 wt % on total tablet, if this compound is present in the granules the amount will be 0.15 to 50 wt %.
  • the tablets according to the invention will contain from 1% to 20% by weight of the disintegrant granules based on the total weight of the compositions, preferably 2 to 15%, more preferably 3 to 10%, e.g. 4 to 8% by weight. If the granules are included to aid dissolution only of the tablets rather than disintegration, then the amount of the granules in the tablets could be as low as 1% by weight.
  • the water-swellable agent preferably has an average primary particle size (as measured by a statistical set of sieves) of up to about 600um, but, conveniently, has an average primary particle size of no more than 200 um, preferably no more than 100um.
  • the disintegrant granules When the water insoluble inorganic material in the disintegrant granule is a zeolite it is preferred that the disintegrant granules have a mean particle size (by sieve analysis) in the range 700 to 1200 micrometers. When the water insoluble inorganic material is silica it is preferred that the disintegrant granules have a mean particle size in the range 250 to 700 micrometers.
  • the water swellable agent used in the granules or tablets according to the invention preferably has a water-swelling capacity of at least 5 cm 3 /gram, preferably 10cm 3 /gram and more preferably 20cm 3 /gram as determined in the test described under "determination of water swelling capacity.
  • the tablets according to the invention also can contain disintegrating promoting agents. These are well known in this area and can be selected from compounds with a high water solubility , from certain tripolyphosphates (either in phase I or partially hydrated).Therefore we have a preference for tablets that comprise water-soluble disintegration-promoting particles containing at least 40%, by weight of the particles, of one or more materials selected from the group consisting of;
  • the compounds with the high water solubility are preferably selected from the group consisting of sodium acetate, in particular the trihydrate thereof, sodium citrate dihydrate and urea. These components are used in amounts of 5 to 25 wt % based on total composition.
  • Preferred tablets comprise 20 to 45% by weight of the water-swelling clay, 45 to 70% by weight of the water-insoluble inorganic material and 3 to 9% by weight of the water-swellable agent based on the weight of the disintegrant granule.
  • the disintegrant granules comprising the inorganic material and the water-swellable agent may be prepared by any of the methods that will be known to those skilled in the art, e.g. by blending the dry ingredients in a mixer (such as a Pek mixer available from George Tweedy & Co of Preston - 281b S.A. Machine) and compacting on a roller compactor (Alexanderwerk WP50 - manufactured by Alexanderwerk AG, D 5630 Rem Kunststoff 1, Germany).
  • a mixer such as a Pek mixer available from George Tweedy & Co of Preston - 281b S.A. Machine
  • a roller compactor Alexanderwerk WP50 - manufactured by Alexanderwerk AG, D 5630 Rem Kunststoff 1, Germany
  • compositions of this invention contain one or more non-soap surfactants.
  • these preferably provide from 5 to 50% by weight of the composition of the tablet or region thereof, more preferably from 8 or 9% by weight of the composition up to 35% or 40% by weight. If the tablet is composed of more than one discrete region, then these preferred amounts of surfactant may apply to the tablet as a whole.
  • the organic surfactant may be present as a component in granulated particles in an amount between 10 and 90% by weight of the particles, more preferably 15 to 50% by weight based on the total weight of the granulated particles. All the surfactant in the composition may be contained within these particles.
  • the surfactant may be anionic (soap or non-soap), cationic, zwitterionic, amphoteric, nonionic or a combination of these.
  • Synthetic (i.e. non-soap) anionic surfactants are well known to those skilled in the art.
  • alkyl benzene sulphonates particularly sodium linear alkyl benzene sulphonates having an alkyl chain length of C 8 -C 15 ; olefin sulphonates; alkane sulphonates; dialkyl sulphosuccinates; fatty acid ester sulphonates and primary alcohol sulphates.
  • soaps of fatty acids are preferably sodium soaps derived from naturally occurring fatty acids, for example, the fatty acids from coconut oil, beef tallow, sunflower or hardened rape seed oil.
  • Suitable nonionic surfactant compounds which may be used include in particular the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide.
  • Amphoteric surfactants which may be used jointly with anionic or nonionic surfactants or both and include amphopropionates
  • Cationic surfactants may possibly be used. These frequently have a quaternised nitrogen atom in a polar head group and an attached hydrocarbon group of sufficient length to be hydrophobic.
  • a composition which is compacted to form tablets or tablet regions typically contains a detergency builder which serves to remove or sequester calcium and/or magnesium ions in the water.
  • the builder acts as a water softener.
  • the amount of builder is from 5% to 80%, more usually 10% or 15% to 40%, 55% or 60% by weight of the tablet.
  • the detergency builder may be present in granulated particles in an amount of from 20 to 80% by weight, more preferably 20%, 25% or 30 to 60% by weight.
  • Detergency builders may be provided wholly by water soluble materials, or may be provided in large part or even entirely by water-insoluble material with water-softening properties.
  • Alkali metal aluminosilicates are strongly favoured as environmentally acceptable detergency builders for fabric washing, and are preferred in this invention.
  • Alkali metal (preferably sodium) aluminosilicates may be either crystalline or amorphous or mixtures thereof, having the general formula: 0.8 - 1.5 Na 2 O.Al 2 O 3 - 0.8 - 6 SiO 2 . xH 2 O
  • These materials contain some bound water (indicated as xH 2 O) and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
  • the preferred sodium aluminosilicates contain 1.5-3.5 SiO 2 units (in the formula above). Both the amorphous and the crystalline materials can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
  • a detergency builder could be a layered sodium silicate as described in US 4 664 839.
  • the less preferred category of water-soluble phosphorus-containing inorganic softeners includes the alkali-metal orthophosphates, metaphosphates, pyrophosphates and polyphosphates.
  • Non-phosphorus water-soluble detergency builders may be organic or inorganic.
  • Inorganics that may be present include alkali metal (generally sodium) carbonate; while organics include polycarboxylate polymers and monomeric polycarboxylates.
  • Tablet compositions preferably include polycarboxylate polymers, more especially polyacrylates and acrylic/maleic copolymers which have some function as water-softening agents and also inhibit unwanted deposition onto fabric from the wash liquor.
  • the tablet contains water soluble builder it is preferably present in an amount of from 10 to 80% by weight based on the total weight of the tablet or region thereof. Where the tablet contains water in-soluble builder it is preferably present in an amount of from 5 to 80% by weight based on the total weight of the tablet or region thereof.
  • the percentage ranges for the components referred to herein may apply to the overall composition of the tablet, as well as to at least one region of the tablet.
  • Tabletted compositions according to the invention may contain a bleach system.
  • This preferably comprises one or more peroxy bleach compounds, for example, inorganic persalts or organic peroxyacids, which may be employed in conjunction with activators to improve bleaching action at low wash temperatures. If any peroxygen compound is present, the amount is likely to lie in a range from 10 to 25% by weight of the composition of the tablet or region thereof.
  • Bleach activators also referred to as bleach precursors
  • Preferred examples include peracetic acid precursors, for example, tetraacetylethylene diamine (TAED), now in widespread commercial use in conjunction with sodium perborate and sodium percarbonate; and perbenzoic acid precursors.
  • TAED tetraacetylethylene diamine
  • a bleach system may also include a bleach stabiliser (heavy metal sequestrant) such as ethylenediamine tetramethylene phosphonate and diethylenetriamine pentamethylene phosphonate.
  • a bleach stabiliser such as ethylenediamine tetramethylene phosphonate and diethylenetriamine pentamethylene phosphonate.
  • Tablets according to invention can also comprise one or more detergency enzymes.
  • the enzyme is selected from amylase, protease, cellulase, lipase and mixtures thereof.
  • the aforementioned enzymes are designed to remove a variety of soils and stains from fabrics.
  • the tablets of the invention may also contain a fluorescer (optical brightener), for example, Tinopal (Trade Mark) DMS or Tinopal CBS available from Ciba-Geigy AG, Basel, Switzerland.
  • a fluorescer optical brightener
  • Tinopal Trade Mark
  • Tinopal CBS available from Ciba-Geigy AG, Basel, Switzerland.
  • An antifoam material is advantageously included if organic surfactant is present, especially, if a detergent tablet is primarily intended for use in front-loading drum-type automatic washing machines.
  • Suitable antifoam materials are usually in granular form, such as those described in EP 266 863A (Unilever).
  • a tablet of the invention includes an amount of an alkali metal silicate, particularly sodium ortho-, meta- or disilicate.
  • an alkali metal silicate particularly sodium ortho-, meta- or disilicate.
  • the starting particulate composition from which the tablets are produced may in principle have any bulk density
  • the present invention may be especially relevant to tablets of detergent compositions made by compacting powders of relatively high bulk density, because of their greater tendency to exhibit disintegration and dispersion problems.
  • Such tablets have the advantage that, compared with a tablet derived from a low bulk density powder, a given dose of composition can be presented as a smaller tablet.
  • the starting particulate composition may suitably have a bulk density of at least 400 g/litre, preferably at least 500 g/litre, and possibly at least 600 g/litre.
  • Granular detergent compositions of high bulk density prepared by granulation and densification in a high-speed mixer/granulator, as described and claimed in EP-A-340 013 (Unilever), EP-A-352 135 (Unilever), and EP-A-425 277 (Unilever), or by the continuous granulation/densification processes described and claimed in EP-A-367 339 (Unilever) and EP-A-390 251 (Unilever), are inherently suitable for use in the present invention.
  • Particle sizes can be controlled in the manufacturing process of any particles included in the composition. Oversized particles are usually removed by sieving (for example by a Mogensen screen) at the end of the production process, followed by milling and recycling of the removed oversized fraction. Undersized particles can also be removed by sieving, or if the manufacturing process employs a fluidised bed then undersized particles may be entrained in the air stream and subsequently recovered from it for recycling to the granulation stage.
  • Materials which are mixed with the granulated particles may also comply with these requirements concerning particle size. These materials (post-added) typically comprise from 5% - 60% by weight of the total weight of the final composition, more usually 35 to 55% by weight.
  • Tabletting entails compaction of a particulate composition.
  • tabletting machinery is known, and can be used. Generally it will function by stamping a quantity of the particulate composition which is confined in a die. Tabletting may be carried out at ambient temperature or at a temperature above ambient which may allow adequate strength to be achieved with less applied pressure during compaction.
  • the particulate composition is preferably supplied to the tabletting machinery at an elevated temperature. This will of course supply heat to the tabletting machinery, but the machinery may be heated in some other way also. If any heat is supplied, it is envisaged that this will be supplied conventionally, such as by passing the particulate composition through an oven, rather than by any application of microwave energy.
  • the size of a tablet will suitably range from 10 to 160 grams, preferably from 15 to 60 grams, depending on the conditions of intended use, and whether it represents a dose for an average load in a fabric washing or dishwashing machine or a fractional part of such a dose.
  • the tablets may be of any shape. However, for ease of packaging they are preferably blocks of substantially uniform cross-section, such as cylinders or cuboids.
  • a very suitable process for making a tablet of compacted particulate detergent composition comprising non-soap surfactant and detergency builder, the process comprising mixing disintegrant granules comprising a water-swelling clay, a water-insoluble inorganic material and a water swellable agent and optionally STS and/or SCS with the other constituents of the detergent composition, optionally comprising STS and/or SCS to produce a particulate detergent composition comprising STS and/or SCS, placing a quantity of the resultant particulate detergent composition within a mould, and compacting the composition within the mould to produce the tablet.
  • the break-up , dispersion and dissolution of tablets was measured by a test procedure in which a tablet is placed on a plastic sieve with 2 mm size which was immersed in 9 litres of tap water at ambient temperature of 22°C and rotated at 200 rpm. The water conductivity was monitored until it reached a constant value.
  • the time for break up and dispersion of the tablets was the time as the time (T90) for change in water conductivity to reach 90 % of its final magnitude. This was also confirmed by visual obsrvation of the material remaining on the rotating sieve.
  • DFS diametrical fracture stress in Pascals
  • F max the applied load in Newtons to cause fracture
  • D is the tablet diameter in metres
  • t is the tablet thickness in metres.
  • the test is carried out using an Instron type universal testing instrument to apply compressive force on a tablet diameter (i.e. perpendicular to the axis of a cylindrical tablet). It is preferred that tablets have a DFS of at least 20 kPa more preferably at least 25 kPa, such as 30 kPa or above.
  • the tablets when used as fabric washing tablets in an automatic washing machine, may be added either to the powder dispensing drawer, or, directly in to the washing drum. This may occur either manually or automatically.
  • Base powder with the composition as mentioned in table 1 was produced via a non-tower route as described in e.g. PCT/EP 02/00945.
  • a post dose mix with the composition as mentioned in table 1 was prepared by dosing the individual components into a Halvor Forberg mixer type F500/538 and mixing for 90 seconds.
  • the powder so obtained was tableted to a strength of DFS 30 kPa using a Kilian SP 300/01-SP-3 single punch tableting machine. Tableting speed was 15 to 20 tablets per minute. The blender speed was 40 RPM and the dwell time was set to zero.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Claims (20)

  1. Pastille de composition détergente particulaire compactée comprenant du tensioactif non savon et un adjuvant de détergence, dans laquelle la pastille ou une région discrète de celle-ci comprend un matériau de matrice et des granules désintégrantes comprenant un matériau inorganique non hydrosoluble et un agent capable de gonfler dans l'eau et une argile capable de gonfler dans l'eau, alors que soit les granules, soit le matériau de matrice, ou les deux, comprennent un agent sélectionné à partir du groupe constitué du STS (toluène sulfonate de sodium) et du SCS (cumène sulfonate de sodium).
  2. Pastille selon la revendication 1, dans laquelle l'agent capable de gonfler dans l'eau est à l'état anhydre, comprend de 1 à 20 % en poids du poids combiné du matériau inorganique non hydrosoluble, du STS et/ou du SCS et de l'agent capable de gonfler dans l'eau et de l'argile capable de gonfler dans l'eau.
  3. Pastille selon la revendication 1, dans laquelle l'argile capable de gonfler dans l'eau est une argile bentonite.
  4. Pastille selon la revendication 1, dans laquelle le matériau inorganique non hydrosoluble est de la silice, un matériau contenant au moins 70 % en poids de silice, ou une zéolite.
  5. Pastille selon la revendication 4, dans laquelle la zéolite est une zéolite P ayant une teneur en eau dans la plage allant de 9 à 12 % en poids.
  6. Pastille selon la revendication 1, dans laquelle la quantité relative de l'argile capable de gonfler dans l'eau et du matériau inorganique non hydrosoluble, autre que les zéolites, dans la granule désintégrante, se situe dans une plage de rapport en poids de 0 à 2:1 en poids entre l'argile capable de gonfler dans l'eau et le matériau inorganique non hydrosoluble.
  7. Pastille selon la revendication 1, dans laquelle l'agent capable de gonfler dans l'eau est sélectionné parmi le groupe constitué de la cellulose, de la cellulose réticulée, de la carboxyméthyl cellulose, de la carboxyméthyl cellulose sodique, de la carboxyméthyl cellulose sodique réticulée, de l'amidon pré-gélatinisé, de l'amidon réticulé et du polyvinyl pyrrolidone réticulé.
  8. Pastille selon la revendication 1, dans laquelle l'agent capable de gonfler dans l'eau constitue, à l'état anhydre, de 1 à 10 % en poids du poids combiné du matériau inorganique non hydrosoluble, du STS et/ou du SCS et de l'agent capable de gonfler dans l'eau et de l'argile capable de gonfler dans l'eau.
  9. Pastille selon la revendication 1, dans laquelle l'agent capable de gonfler dans l'eau dans la granule désintégrante est présente dans une quantité inférieure à 2 % en poids, sur la base du poids total de la composition de la pastille.
  10. Pastille selon la revendication 1, dans laquelle le STS et/ou le SCS est présent dans une quantité allant de 0,5 à 22 % en poids du total de la pastille.
  11. Pastille selon la revendication 1, dans laquelle le STS et/ou le SCS est présent dans le matériau de matrice dans une quantité allant de 0,5 à 5 % en poids du total de la pastille.
  12. Pastille selon la revendication 1, dans laquelle le STS et/ou le SCS est présent dans le matériau de matrice dans une quantité allant de 0,5 à 5 % en poids du total de la pastille.
  13. Pastille selon la revendication 1, dans laquelle l'agent capable de gonfler dans l'eau a une taille moyenne des particules primaires allant jusqu'à 600 µm.
  14. Pastille selon la revendication 1, dans laquelle la pastille contient de 1 à 20 % en poids des granules désintégrantes sur la base du poids total de la composition de la pastille.
  15. Pastille selon la revendication 1, dans laquelle les pastilles désintégrantes contiennent une zéolite en tant que matériau inorganique non hydrosoluble et ont une taille moyenne de particules dans la plage allant de 700 à 1200 micromètres.
  16. Pastille selon la revendication 1, comprenant en outre des particules hydrosolubles favorisant la désintégration contenant au moins 40 % en poids des particules, d'un ou de plusieurs matériaux sélectionnés dans le groupe constitué de :
    i) composés ayant une solubilité dans l'eau supérieure à 50 grammes pour 100 grammes d'eau à 20°C, et
    ii) tripolyphosphate de sodium contenant au moins 50 % de son propre poids de la forme anhydre en phase I, et
    iii) tripolyphosphate de sodium qui est partiellement hydraté afin de contenir de l'eau d'hydratation en une quantité qui est d'au moins 0,5 % en poids du tripolyphosphate de sodium dans les particules.
  17. Pastille selon la revendication 16, dans laquelle les composés ayant une solubilité supérieure à 50 grammes pour 100 grammes d'eau à 20°C, sont sélectionnés parmi l'acétate de sodium, le dihydrate de citrate de sodium ou l'urée.
  18. Pastille selon la revendication 17, dans laquelle l'acétate de sodium comprend du trihydrate d'acétate de sodium.
  19. Pastille selon la revendication 16, dans laquelle les particules hydrosolubles favorisant la désintégration sont présentes dans une quantité allant de 5 % à 25 % en poids, sur la base du poids total de la composition.
  20. Procédé de fabrication d'une pastille de composition détergente particulaire compactée comprenant du tensioactif non savon et de l'adjuvant de détergence selon la revendication 1, dans lequel le procédé comprend les étapes consistant à mélanger les granules désintégrantes comprenant une argile capable de gonfler dans l'eau, un matériau inorganique non hydrosoluble et un agent capable de gonfler dans l'eau, et optionnellement le STS et/ou le SCS avec les autres constituants de la composition détergente, comprenant optionnellement le STS et/ou le SCS pour produire une composition détergente particulaire comprenant du STS et/ou du SCS, à placer une quantité de la composition détergente particulaire ainsi obtenue dans un moule et à compacter la composition dans le moule pour produire la pastille.
EP03077710A 2002-09-16 2003-09-01 Compositions de nettoyage Expired - Lifetime EP1398368B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03077710A EP1398368B1 (fr) 2002-09-16 2003-09-01 Compositions de nettoyage

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Application Number Priority Date Filing Date Title
EP02078845 2002-09-16
EP02078845 2002-09-16
EP03077710A EP1398368B1 (fr) 2002-09-16 2003-09-01 Compositions de nettoyage

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EP1398368A1 EP1398368A1 (fr) 2004-03-17
EP1398368B1 true EP1398368B1 (fr) 2005-11-23

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EP (1) EP1398368B1 (fr)
AT (1) ATE310797T1 (fr)
DE (1) DE60302402T2 (fr)
ES (1) ES2250823T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201402257D0 (en) 2014-02-10 2014-03-26 Revolymer Ltd Novel Peracid - containing particle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6191088B1 (en) * 1998-03-20 2001-02-20 Colgate-Palmolive Co. Powdered automatic dishwashing composition
DE19818965A1 (de) * 1998-04-28 1999-11-04 Henkel Kgaa Wasch- und Reinigungsmittelformkörper mit verbesserten Zerfallseigenschaften
EP1035199B1 (fr) * 1999-03-12 2008-02-27 The Procter & Gamble Company Comprimé détergent parfumé
DE69939424D1 (de) * 1999-03-12 2008-10-09 Procter & Gamble Parfümierte Waschmitteltablette
GB2348435A (en) * 1999-04-01 2000-10-04 Procter & Gamble Softening compositions
DE19950765A1 (de) * 1999-10-21 2001-04-26 Henkel Kgaa Abriebverbesserte Wasch- oder Reinigungsmittelformkörper
GB0102736D0 (en) * 2001-02-05 2001-03-21 Crosfield Joseph & Sons Disintegrants and a process for their manufacture
EP1358312B1 (fr) * 2001-02-05 2007-12-12 Unilever N.V. Compositions de nettoyage

Also Published As

Publication number Publication date
DE60302402D1 (de) 2005-12-29
EP1398368A1 (fr) 2004-03-17
ATE310797T1 (de) 2005-12-15
DE60302402T2 (de) 2006-06-14
ES2250823T3 (es) 2006-04-16

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