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EP1529834A1 - Particules de détergent - Google Patents

Particules de détergent Download PDF

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Publication number
EP1529834A1
EP1529834A1 EP04256806A EP04256806A EP1529834A1 EP 1529834 A1 EP1529834 A1 EP 1529834A1 EP 04256806 A EP04256806 A EP 04256806A EP 04256806 A EP04256806 A EP 04256806A EP 1529834 A1 EP1529834 A1 EP 1529834A1
Authority
EP
European Patent Office
Prior art keywords
spray
slurry
zeolite
weight
detergent
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.)
Withdrawn
Application number
EP04256806A
Other languages
German (de)
English (en)
Inventor
Stuart Andrew Caldwell
Nicholas Alexander Turnbull
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from EP03257082A external-priority patent/EP1529833A1/fr
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to EP04256806A priority Critical patent/EP1529834A1/fr
Publication of EP1529834A1 publication Critical patent/EP1529834A1/fr
Withdrawn legal-status Critical Current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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/02—Preparation in the form of powder by spray drying
    • 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
    • C11D3/128—Aluminium silicates, e.g. zeolites
    • 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
    • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
    • C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions

Definitions

  • the present invention relates to the field of laundry detergent compositions and in particular to methods for making particles which comprise polymer and which are suitable for use in laundry detergent compositions.
  • EP-A-421664 states that these types of polymers are generally added to detergent formulations either in the form of a dried powder that is formed by spray-drying a solution, dispersion, slurry or emulsion of polymer in a liquid ("wet polymer”), or directly as wet polymer to a detergent formulation in slurry form before drying. It is then stated that in both cases the product has a number of undesirable characteristics: the powder formed by spray drying wet polymer is said to be hygroscopic and therefore tends to become sticky upon storage or in the final formulation.
  • EP-A-421664 solves the problem by providing an agglomerate made by agglomerating a dry polymer and an inorganic component.
  • DE-A-3316513 describes use of wet polymer to prepare a zeolite particle.
  • the problem addressed is that of effectively dispersing zeolite in aqueous wash liquor in view of the water insoluble, finely particulate nature of zeolite.
  • the particles disclosed contain 70 to 95 wt% zeolite and 5 to 30 wt% polycarboxylic acid polymer.
  • Polycarboxylate polymer is also incorporated into spray-dried granules in EP-A-640 684 for making phosphate-free automatic dishwashing compositions; WO92/13937 for making a granular additive for pre-treating hard water or as an additive for a cleaning composition with polymer at very high levels; EP-A-270 240 for making low particle porosity spray-dried powders; and in EP-A-137 669 for preparing detergent compositions that are phosphate-free but comprise a bleach system having good bleach stability and fabric damage characteristics.
  • a method for making a laundry detergent particle comprising from 10 to 60 wt % (anhydrous basis) zeolite, from 12 to 75 wt % polycarboxylate polymer, and optional additional ingredients to 100 % by weight, said method comprising preparing an aqueous slurry comprising zeolite, and polycarboxylate polymer and optional additional ingredients and spray drying the slurry, characterised in that the weight ratio of zeolite (anhydrous basis) to polycarboxylate polymer in the slurry is from 4:1 to 1:2.
  • the level of polycarboxylate polymer in the particles produced is from 15 to 50 wt % and of zeolite (anhydrous basis) is 10 to 50 wt %, or 29 to 50 wt%.
  • a preferred additional ingredient comprises sodium carbonate.
  • detergent compositions comprising particles made by this process are defined.
  • the inventors have found that detergent compositions comprising the particles made according to this invention also provide improved cleaning under cold water conditions when compared with the same compositions in which the polymeric polycarboxylate is added as a separate granule. This is surprising in view of the suppliers trade literature and teachings such as EP-A-658189 and EP-A-759463 which teach the use of granules of these polymeric materials in contrast to incorporating them via spray-drying processes.
  • the polycarboxylate polymers include homopolymers or copolymers. Suitable polymers include homopolymers or copolymers of dicarboxylic acids such as maleic acid, itaconic acid, mesaconic acid, fumaric acid, citraconic acid and the derivatives of such acids including anhydrides of dicarboxylic acids, such as maleic anhydride; monocarboxylic acids such as acrylic acid, methacrylic acid, vinyl acetic acid, crotonic acid and acryloxypropionic acid.
  • dicarboxylic acids such as maleic acid, itaconic acid, mesaconic acid, fumaric acid, citraconic acid and the derivatives of such acids including anhydrides of dicarboxylic acids, such as maleic anhydride
  • monocarboxylic acids such as acrylic acid, methacrylic acid, vinyl acetic acid, crotonic acid and acryloxypropionic acid.
  • Polymers can be in acid or neutralized or partially neutralized form with Na, K, or other counterions.
  • Preferred polycarboxylate polymers are homopolymers of acrylic acid and copolymers of acrylic and maleic acids. Especially preferred are the acrylic/maleic copolymers available from BASF as Sokalan (tradename) CP5 and CP7 (salt form) and CP45 (acid form).
  • the average molar mass Mw of the polymers is typically from 500 to 5,000,000.
  • the molecular weight will be above 10 000, more preferably above 20 000.
  • the molecular weight may be below 1 000 000, but is usually below 500 000 or even 100 000.
  • the polymer will have a Brookfield viscosity (measured on a Brookfield LVT with a 20% solution of active substance in distilled water at 23°C, spindle 1 at 60rpm) of from 25 to 60, preferably 30 to 50.
  • the amount of polymeric polycarboxylate in the particles produced by the present invention is from 12 to 75 % by weight, or even from 15 to 50 % by weight and the quantities incorporated into the slurry for spray drying is selected accordingly.
  • the quantities of polymer defined in this patent application are based on the equivalent fully neutralised sodium salt form of the polymer; for acid forms of polymer or other salt forms, the amounts used should be adjusted accordingly to be within the ranges defined.
  • the zeolite (alkali metal aluminosilicate) is present in an amount of from 10 to 54 wt % (based on anhydrous material). Preferably there will be at least 12 wt % and more preferably at least 15 wt % or at least 20 wt % zeolite or even at least 29 wt % based on the weight of the particle.
  • the particle may comprise no greater than 50 wt % or even less than 40 wt % zeolite (anhydrous basis).
  • the alkali metal aluminosilicate 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. These materials contain some bound water.
  • Suitable zeolites are described for example, in GB 1 473 201 (Henkel) and GB 1 429 143 (Procter & Gamble).
  • the preferred sodium aluminosilicates of this type are the well-known commercially available zeolites A, X and P, and mixtures thereof.
  • the zeolite may be the the commercially available zeolite 4A now widely used in laundry detergent powders.
  • the zeolite builder incorporated in the compositions of the invention may be maximum aluminium zeolite P (zeolite MAP) as described and claimed in EP 384 070B (Unilever).
  • Zeolite MAP is defined as an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not exceeding 1.33, preferably not exceeding 1.15.
  • the weight ratio of the zeolite to the polycarboxylate polymer in the slurry for spray-drying is from 4:1 to 1:2, preferably from 3:1 to 1:1 and most preferably from 3:1 to 1.5:1. Particles having such a weight ratio have been found to provide a cleaning benefit when used in combination with other cleaning components in a fully formulated laundry detergent.
  • the spray dried particle also comprises from 0.05 to 50 wt %, or 0.5 to 18 wt% or even 2 to 15 wt% of a shear thinning component.
  • a shear thinning component At higher levels, the viscosity is too low for effective spray-drying processes.
  • This may be any shear-thinning detergent additive. It may be a hydrotrope or wax but is preferably a soap. Any conventional soap may be used.
  • the shear-thinning component It is preferably added to the spray drying process by incorporation of solid particles which may be flakes or noodles or other solid particles of soap into the slurry for spray-drying.
  • a fatty acid may be added to the slurry to generate soap in situ.
  • the inventors have found an additional surprising benefit associated with the use of shear-thinning components comprising soap; soap is often associated with a problem of residues on laundered clothes particularly noticeable on dark-coloured fabrics. The inventors have found that incorporation of the soap into the particles of the present invention produces a significant benefit in reducing these residues.
  • surfactant is present in the slurry for spray-drying.
  • Surfactants may be added directly to the slurry for spray-drying or the acid precursors of the anionic surfactants may be used so that the surfactant is formed in situ, as described above for in situ soap formation. Any desired level of surfactant may be present, but where present surfactant is generally added into the slurry for spray-drying in an amount to result in an amount of surfactant in the finished particle of from 1 to 50 wt%, or from 2 to 35 or 15 or even to 10 wt% based on the weight of the finished particle.
  • Suitable surfactants may be any used in detergent compositions as described below. Preferred are the anionic surfactants described below, particularly alkyl benzene sulphonate surfactants.
  • a highly preferred component for addition to the slurry is a cationic amine component, particularly for example alkoxylated cationic diamines, polyamines or polymers of mixtures thereof, particularly as described in EP-A-111965. It has been found that such components not only provide a clay soil removal/anti-redeposition benefit in the final cleaning composition but also help in the processing of the slurry and in providing well-structured particles.
  • Particularly preferred cationic amine components are optionally sulphated or sulphonated and selected from the group consisting of:
  • chelants or mixtures of chelants are present in the particles of the invention, generally at levels from 0 to 45 wt %, preferably at levels from 1 to 20 wt % or even 2 to 15 wt %.
  • Suitable chelants can be selected from the group consisting of carboxylates, phosphonates, polyfunctionally-substituted aromatic chelants and mixtures thereof.
  • the chelant is preferably a phosphonic acid or succinic acid, or salt thereof.
  • Useful carboxylates include ethylenediaminetetracetates (“EDTA”), N-hydroxyethylethylene diaminetriacetates, nitrilotriacetates, ethylene diamine tetraproprionates, triethylene tetraaminehexacetates, diethylenetriaminepentaacetates, and ethanoldiglycines, alkali metal, ammonium, and substituted ammonium salts thereof, and mixtures thereof.
  • EDTA ethylenediaminetetracetates
  • N-hydroxyethylethylene diaminetriacetates N-hydroxyethylethylene diaminetriacetates
  • nitrilotriacetates nitrilotriacetates
  • ethylene diamine tetraproprionates triethylene tetraaminehexacetates
  • diethylenetriaminepentaacetates diethylenetriaminepentaacetates
  • ethanoldiglycines alkali metal, ammonium, and substituted ammonium salt
  • Useful phosphonates include ethylenediaminetetrakis (methylenephosponates), sold as DEQUEST®. Preferably these amino phosphonates do not contain alkyl or alkenyl groups with more than about 6 carbon atoms.
  • Particularly preferred chelants are diethylene triamine penta (methylene phosphonic acid) (“DTPMP”) and ethylene diamine tetra (methylene phosphonic acid) (EDTMP) and hydroxyethylenediphosphonate (HEDP).
  • DTPMP diethylene triamine penta
  • ETMP ethylene diamine tetra (methylene phosphonic acid)
  • HEDP hydroxyethylenediphosphonate
  • Polyfunctionally-substituted aromatic chelants are also useful in the components herein. See US-A- 3 812 044, issued May 21, 1974, to Connor et al.
  • Preferred compounds of this type in acid form are dihydroxydisulfobenzenes such as 1,2-dihydroxy-3,5-disulfobenzene.
  • a preferred biodegradable chelant for use herein is ethylene diamine-N, N-disuccinate ("EDDS"), especially the [S,S] isomer as described in US-A-4 704 233, issued on November 3, 1987, to Hartman and Perkins.
  • EDDS ethylene diamine-N, N-disuccinate
  • Magnesium salts particularly magnesium sulphate, have been found to be useful in ensuring efficient processing in the spray drying process.
  • a magnesium salt is also present.
  • the magnesium salt will be present at levels of from 0-40 wt % of the particle, preferably 0.1 to 10 wt %, more preferably from 0.5 to 5 wt %.
  • Magnesium sulphate is particularly preferred.
  • the chelating agent may be pre-complexed with a metal salt such as magnesium in order to provide some protection from degradation in the presence of bleach. Preferably this is done by dissolving a salt of the metal ion into a solution of the chelating agent in the required ratios.
  • the molar ratio of metal ion to chelating agent is preferably at least 1:1, the present invention allows molar ratios of greater than 3:1 to be prepared, most preferred is a molar ratio of about 5:1. Again, whilst any metal salt may be used, magnesium sulphate is most preferred.
  • the particles of the present invention generally also contain an additional inorganic component such as sodium carbonate, phosphate or silicate.
  • an additional inorganic component such as sodium carbonate, phosphate or silicate.
  • Sodium carbonate and/or silicate are preferred, sodium carbonate being most preferred.
  • Such an inorganic component is preferably added in amounts from 0 up to 30 wt%, generally in amounts from 1 to 20 wt% or from 2 to 15 wt%.
  • the particles additionally contain other ingredients which are incorporated in detergent compositions in minor amounts, such as at levels below 10 wt%, more usually below 5 wt%, or even below 2 wt% or even lower in the finished detergent product.
  • examples of such materials include polymers useful in detergent compositions such as soil release polymers, optical brighteners, dye-transfer inhibitors (such as PVP, PVNO, PVPVI and combinations thereof), anti-redeposition agents such as CMC, etc.
  • the present invention is useful for incorporating into a detergent composition components which are used at low levels in finished product and which are available from suppliers in an aqueous-based form such as a solution of suspension or dispersion in water. These materials can be added directly to the slurry for spray-drying.
  • the particles of the present invention are made by a spray-drying process.
  • the polymer, zeolite and optional additional ingredients are mixed with water to form a slurry which is then spray-dried by conventional means (usually using warm air drying although spray cooling may also be useful). Generally this will be in a spray-drying tower using a high pressure (e.g. 6000-7000kPa) spray nozzle. Spinning disc atomisers may also be used. Generally raw materials which are provided by suppliers in solution or dispersion in water are pre-mixed and the solids including zeolite subsequently added.
  • the particles produced will generally have a bulk density at least 300g/l or at least 400 g/l and up to 1000g/l or 900g/l or below (as measured by the method now described).
  • the final density of the particles and compositions herein can be measured by a simple technique which involves dispensing a quantity of the granular material into a container of known volume, measuring the weight of material and reporting the density as grams/liter.
  • the method used herein allows the material to flow into the measuring container under gravity, and without pressure or other compaction in the measuring container.
  • the density measurements should be run at room temperature.
  • the granular material whose density is being measured should be at least 24 hours old and should be held at room temperature for 24 hours prior to testing. A relative humidity of 50 % or less is convenient.
  • any clumps in the material should be gently broken up prior to running the test.
  • the sample of material is allowed to flow through a funnel mounted on a filling hopper and stand (#150; Seedburo Equipment Company, Chicago, Illinois) into an Ohaus cup of known volume and weight (#104; Seedburo).
  • the top of the cup is positioned about 50 mm from the bottom of the funnel, and the cup is filled to overflowing.
  • a spatula or other straight edge is then scraped over the top of the cup, without vibration or tapping, to level the material, thereby exactly and entirely filling the cup.
  • the weight of material in the cup is then measured. Density can be reported as g/l. Two repeat runs are made and the bulk density is reported as an average of the three measurements. Relative error is about 0.4 %.
  • the particles are further processed to incorporate them into conventional granules such as agglomerates or extrudates.
  • any solid particulate in a conventional granulation process is wholly or partially replaced by the spray-dried particles of the present invention.
  • Suitable conventional and known granulation processes include using a pan-granulator, fluidized bed, Schugi mixer, Lödige ploughshare mixer, rotating drum or other low energy mixers, marumeriser or spheroniser; by compaction, including extrusion optionally with spheronising or marumerising, and tabletting; when melt binding agents are used by prilling and pastilling using a Sandvik Roto Former; and by high shear processes in which the mixers have a high speed stirring and cutting action.
  • Suitable mixers will be well known to those skilled in the art.
  • Suitable processes are described in the patent literature: an example of an agglomeration process is described in US 5133924 (Appel). An example of a suitable fluidised bed agglomeration process is described for example in WO97/22685 (Dhanuka). Suitable extrusion processes are described for example in WO97/03181 (EP-A-840780) (Henkel) or in EP-A-518888 (Henkel).
  • a detergent composition comprising a particle as described above.
  • Suitable detergent compositions may be for any cleaning purpose, but the invention is particularly directed to laundry washing applications.
  • the detergent composition will generally be in the form of a solid composition. Solid compositions include powders, granules, noodles, flakes, bars, tablets, and combinations thereof.
  • the detergent composition may be in the form of a liquid composition.
  • the detergent composition may also be in the form of a paste, gel, liqui-gel, suspension, or any combination thereof.
  • the detergent composition may be at least partially enclosed, preferably completely enclosed, by a film or laminate such as a water-soluble and/or water-dispersible material. Preferred water-soluble and/or water-dispersible materials are polyvinyl alcohols and/or carboxymethyl celluloses.
  • the detergent compositions of the invention are preferably granular detergents having an overall bulk density of from 350 to 1000 g/l, more preferably 550 to 1000g/l or even 600 to 900g/l.
  • the particles of the invention will be mixed with other detergent particles including combinations of agglomerates, spray-dried powders and/or dry added materials such as bleaching agents, enzymes etc, to provide a level of polycarboxylate polymer in the finished product from 0.1 or from 1 wt% based on finished product up to 10 wt%, or up to 7 wt% or even up to 5 wt%.
  • the particles of the invention may be added into a detergent composition in amounts generally from 1 to 30 wt% based on finished product, or from 1 to 20 wt% or from 1 to 10 wt% based on finished product.
  • the detergent particles or the composition has a size average particle size of from 200 ⁇ m to 2000 ⁇ m, preferably from 350 ⁇ m to 600 ⁇ m.
  • detergent compositions comprising the particles made by the process of the invention will comprise at least some of the usual detergent adjunct materials, such as agglomerates, extrudates, other spray dried particles having different composition to those of the invention, or dry added materials.
  • detergent adjunct materials such as agglomerates, extrudates, other spray dried particles having different composition to those of the invention, or dry added materials.
  • surfactants are incorporated into agglomerates, extrudates or spray dried particles along with solid materials, usually builders, and these may be admixed with the spray dried particles of the invention.
  • some or all of the solid material may be replaced with the particles made according to the invention.
  • the detergent adjunct materials are typically selected from the group consisting of detersive surfactants, builders, polymeric co-builders, bleach, chelants, enzymes, anti-redeposition polymers, soil-release polymers, polymeric soil-dispersing and/or soil-suspending agents, dye-transfer inhibitors, fabric-integrity agents, suds suppressors, fabric-softeners, flocculants, perfumes, whitening agents, photobleach and combinations thereof.
  • a highly preferred adjunct component is a surfactant.
  • the detergent composition comprises one or more surfactants.
  • the detergent composition comprises (by weight of the composition) from 0% to 50%, preferably from 5% and more preferably from 10 or even 15 wt% to 40%, or to 30%, or to 20% one or more surfactants.
  • Preferred surfactants are anionic surfactants, non-ionic surfactants, cationic surfactants, zwitterionic surfactants, amphoteric surfactants, cationic surfactants and mixtures thereof.
  • Preferred anionic surfactants comprise one or more moieties selected from the group consisting of carbonate, phosphate, sulphate, sulphonate and mixtures thereof.
  • Preferred anionic surfactants are C 8-18 alkyl sulphates and C 8-18 alkyl sulphonates.
  • Suitable anionic surfactants incorporated alone or in mixtures in the compositions of the invention are also the C 8-18 alkyl sulphates and/or C 8-18 alkyl sulphonates optionally condensed with from 1 to 9 moles of C 1-4 alkylene oxide per mole of C 8-18 alkyl sulphate and/or C 8-18 alkyl sulphonate.
  • the alkyl chain of the C 8-18 alkyl sulphates and/or C 8-18 alkyl sulphonates may be linear or branched, preferred branched alkyl chains comprise one or more branched moieties that are C 1-6 alkyl groups.
  • Other preferred anionic surfactants are C 8-18 alkyl benzene sulphates and/or C 8-18 alkyl benzene sulphonates.
  • the alkyl chain of the C 8-18 alkyl benzene sulphates and/or C 8-18 alkyl benzene sulphonates may be linear or branched, preferred branched alkyl chains comprise one or more branched moieties that are C 1-6 alkyl groups.
  • anionic surfactants are selected from the group consisting of: C 8-18 alkenyl sulphates, C 8-18 alkenyl sulphonates, C 8-18 alkenyl benzene sulphates, C 8-18 alkenyl benzene sulphonates, C 8-18 alkyl di-methyl benzene sulphate, C 8-18 alkyl di-methyl benzene sulphonate, fatty acid ester sulphonates, di-alkyl sulphosuccinates, and combinations thereof.
  • the anionic surfactants may be present in the salt form.
  • the anionic surfactant may be an alkali metal salt of one or more of the compounds selected from the group consisting of: C 8-18 alkyl sulphate, C 8-18 alkyl sulphonate, C 8-18 alkyl benzene sulphate, C 8 -C 18 alkyl benzene sulphonate, and combinations thereof.
  • Preferred alkali metals are sodium, potassium and mixtures thereof.
  • the detergent composition comprises from 10% to 30wt% anionic surfactant.
  • Preferred non-ionic surfactants are selected from the group consisting of: C 8-18 alcohols condensed with from 1 to 9 of C 1 -C 4 alkylene oxide per mole of C 8-18 alcohol, C 8-18 alkyl N-C 1-4 alkyl glucamides, C 8-18 amido C 1-4 dimethyl amines, C 8-18 alkyl polyglycosides, glycerol monoethers, polyhydroxyamides, and combinations thereof.
  • the detergent compositions of the invention comprises from 0 to 15, preferably from 2 to 10 wt% non-ionic surfactant.
  • Preferred cationic surfactants are quaternary ammonium compounds.
  • Preferred quaternary ammonium compounds comprise a mixture of long and short hydrocarbon chains, typically alkyl and/or hydroxyalkyl and/or alkoxylated alkyl chains.
  • long hydrocarbon chains are C 8-18 alkyl chains and/or C 8-18 hydroxyalkyl chains and/or C 8-18 alkoxylated alkyl chains.
  • short hydrocarbon chains are C 1-4 alky chains and/or C 1-4 hydroxyalkyl chains and/or C 1-4 alkoxylated alkyl chains.
  • the detergent composition comprises (by weight of the composition) from 0% to 20% cationic surfactant.
  • Preferred zwitterionic surfactants comprise one or more quaternized nitrogen atoms and one or more moieties selected from the group consisting of: carbonate, phosphate, sulphate, sulphonate, and combinations thereof.
  • Preferred zwitterionic surfactants are alkyl betaines.
  • Other preferred zwitterionic surfactants are alkyl amine oxides.
  • Catanionic surfactants which are complexes comprising a cationic surfactant and an anionic surfactant may also be included. Typically, the molar ratio of the cationic surfactant to anionic surfactant in the complex is greater than 1:1, so that the complex has a net positive charge.
  • a further preferred adjunct component is a builder.
  • the detergent composition comprises (by weight of the composition and on an anhydrous basis) from 5% to 50% builder.
  • Preferred builders are selected from the group consisting of: inorganic phosphates and salts thereof, preferably orthophosphate, pyrophosphate, tri-poly-phosphate, alkali metal salts thereof, and combinations thereof; polycarboxylic acids and salts thereof, preferably citric acid, alkali metal salts of thereof, and combinations thereof; aluminosilicates, salts thereof, and combinations thereof, preferably amorphous aluminosilicates, crystalline aluminosilicates, mixed amorphous/crystalline aluminosilicates, alkali metal salts thereof, and combinations thereof, most preferably zeolite A, zeolite P, zeolite MAP, salts thereof, and combinations thereof; silicates such as layered silicates, salts thereof, and combinations thereof, preferably sodium layered silicate
  • a preferred adjunct component is a bleaching agent.
  • the detergent composition comprises one or more bleaching agents.
  • the composition comprises (by weight of the composition) from 1% to 50% of one or more bleaching agent.
  • Preferred bleaching agents are selected from the group consisting of sources of peroxide, sources of peracid, bleach boosters, bleach catalysts, photo-bleaches, and combinations thereof.
  • Preferred sources of peroxide are selected from the group consisting of: perborate monohydrate, perborate tetrahydrate, percarbonate, salts thereof, and combinations thereof.
  • Preferred sources of peracid are selected from the group consisting of: bleach activator typically with a peroxide source such as perborate or percarbonate, preformed peracids, and combinations thereof.
  • Preferred bleach activators are selected from the group consisting of: oxy-benzene-sulphonate bleach activators, lactam bleach activators, imide bleach activators, and combinations thereof.
  • a preferred source of peracid is tetra-acetyl ethylene diamine (TAED)and peroxide source such as percarbonate.
  • Preferred oxy-benzene-sulphonate bleach activators are selected from the group consisting of: nonanoyl-oxy-benzene-sulponate, 6-nonamido-caproyl-oxy-benzene-sulphonate, salts thereof, and combinations thereof.
  • Preferred lactam bleach activators are acyl-caprolactams and/or acyl-valerolactams.
  • a preferred imide bleach activator is N-nonanoyl-N-methyl-acetamide.
  • Preferred preformed peracids are selected from the group consisting of N,N-pthaloyl-amino-peroxycaproic acid, nonyl-amido-peroxyadipic acid, salts thereof, and combinations thereof.
  • the STW-composition comprises one or more sources of peroxide and one or more sources of peracid.
  • Preferred bleach catalysts comprise one or more transition metal ions.
  • Other preferred bleaching agents are di-acyl peroxides.
  • Preferred bleach boosters are selected from the group consisting of: zwitterionic imines, anionic imine polyions, quaternary oxaziridinium salts, and combinations thereof.
  • Highly preferred bleach boosters are selected from the group consisting of: aryliminium zwitterions, aryliminium polyions, and combinations thereof. Suitable bleach boosters are described in US360568, US5360569 and US5370826.
  • a preferred adjunct component is an anti-redeposition agent.
  • the detergent composition comprises one or more anti-redeposition agents.
  • Preferred anti-redeposition agents are cellulosic polymeric components, most preferably carboxymethyl celluloses.
  • a preferred adjunct component is a chelant.
  • the detergent composition comprises one or more chelants.
  • the detergent composition comprises (by weight of the composition) from 0.01% to 10% chelant.
  • Preferred chelants are selected from the group consisting of: hydroxyethane-dimethylene-phosphonic acid, ethylene diamine tetra(methylene phosphonic) acid, diethylene triamine pentacetate, ethylene diamine tetraacetate, diethylene triamine penta(methyl phosphonic) acid, ethylene diamine disuccinic acid, and combinations thereof.
  • a preferred adjunct component is a dye transfer inhibitor.
  • the detergent composition comprises one or more dye transfer inhibitors.
  • dye transfer inhibitors are polymeric components that trap dye molecules and retain the dye molecules by suspending them in the wash liquor.
  • Preferred dye transfer inhibitors are selected from the group consisting of: polyvinylpyrrolidones, polyvinylpyridine N-oxides, polyvinylpyrrolidone-polyvinylimidazole copolymers, and combinations thereof.
  • a preferred adjunct component is an enzyme.
  • the detergent composition comprises one or more enzymes.
  • Preferred enzymes are selected from then group consisting of: amylases, arabinosidases, carbohydrases, cellulases, chondroitinases, cutinases, dextranases, esterases, ⁇ -glucanases, gluco-amylases, hyaluronidases, keratanases, laccases, ligninases, lipases, lipoxygenases, malanases, mannanases, oxidases, pectinases, pentosanases, peroxidases, phenoloxidases, phospholipases, proteases, pullulanases, reductases, tannases, transferases, xylanases, xyloglucanases, and combinations thereof.
  • Preferred enzymes are selected from the group consisting of: amylases, carbohydrases, cell
  • a preferred adjunct component is a fabric integrity agent.
  • the detergent composition comprises one or more fabric integrity agents.
  • fabric integrity agents are polymeric components that deposit on the fabric surface and prevent fabric damage during the laundering process.
  • Preferred fabric integrity agents are hydrophobically modified celluloses. These hydrophobically modified celluloses reduce fabric abrasion, enhance fibre-fibre interactions and reduce dye loss from the fabric.
  • a preferred hydrophobically modified cellulose is described in WO99/14245.
  • Other preferred fabric integrity agents are polymeric components and/or oligomeric components that are obtainable, preferably obtained, by a process comprising the step of condensing imidazole and epichlorhydrin.
  • a preferred adjunct component is a salt.
  • the detergent composition comprises one or more salts.
  • the salts can act as alkalinity agents, buffers, builders, co-builders, encrustation inhibitors, fillers, pH regulators, stability agents, and combinations thereof.
  • the detergent composition comprises (by weight of the composition) from 5% to 60% salt.
  • Preferred salts are alkali metal salts of aluminate, carbonate, chloride, bicarbonate, nitrate, phosphate, silicate, sulphate, and combinations thereof.
  • Other preferred salts are alkaline earth metal salts of aluminate, carbonate, chloride, bicarbonate, nitrate, phosphate, silicate, sulphate, and combinations thereof.
  • Especially preferred salts are sodium sulphate, sodium carbonate, sodium bicarbonate, sodium silicate, sodium sulphate, and combinations thereof.
  • the alkali metal salts and/or alkaline earth metal salts may be anhydrous.
  • a preferred adjunct component is a soil release agent.
  • the detergent composition comprises one or more soil release agents.
  • soil release agents are polymeric compounds that modify the fabric surface and prevent the redeposition of soil on the fabric.
  • Preferred soil release agents are copolymers, preferably block copolymers, comprising one or more terephthalate unit.
  • Preferred soil release agents are copolymers that are synthesised from dimethylterephthalate, 1,2-propyl glycol and methyl capped polyethyleneglycol.
  • Other preferred soil release agents are anionically end capped polyesters.
  • a preferred adjunct component is a soil suspension agent.
  • the detergent composition comprises one or more soil suspension agents.
  • Preferred soil suspension agents are polymeric polycarboxylates. Especially preferred are polymers derived from acrylic acid, polymers derived from maleic acid, and co-polymers derived from maleic acid and acrylic acid. In addition to their soil suspension properties, polymeric polycarboxylates are also useful co-builders for laundry detergents.
  • Other preferred soil suspension agents are alkoxylated polyalkylene imines. Especially preferred alkoxylated polyalkylene imines are ethoxylated polyethylene imines, or ethoxylated-propoxylated polyethylene imine.
  • the soil suspension agents represented by the above formula can be sulphated and/or sulphonated.
  • the detergent compositions of the invention may comprise softening agents for softening through the wash such as clay optionally also with flocculant and enzymes.
  • Example 2 EDDS (ethylenediamine -N,N'-disuccinic acid (S,S isomer) in the form of its sodium salt) 2.8 MgSO4 1.1 - Na 2 SO 4 - 0.7 Maleic acid/acrylic acid copolymer (salt form) Sokalan CP5 (tradename from BASF) 10.8 13.0 HEDP (1,1-hydroxyethane diphosphonic acid) 5.6 3.1 C 12-18 alkyl benzene sulphonate (Na salt) LAS - 3.1 Soap 6.5 - Zeolite (anhydrous basis) 37.0 30.4 Hexamethylene diaminetetra (ethoxylate 24 ) diquat with MeCl - 2.5 Miscellaneous 5.6 7.2 Water 30.6 40.0 Total parts 100.0 100.0
  • a homogeneous aqueous slurry of the components shown above was made up with the moisture content shown.
  • the slurry was heated to 80°C and fed under high pressure, (6,000-7,000 kPa), into a conventional counter-current spray drying tower with an air inlet temperature of 300-310°C.
  • the atomised slurry was dried to produce a granular solid which was then cooled and sieved to remove oversize (>2mm). Fine ( ⁇ 0.15mm) material was elutriated with the exhaust air in the spray-drying tower and collected in a containment system.
  • the finished granules had a moisture content of about 10% by weight, a bulk density of 383 g/l and a particle size distribution such that 56.4% by weight of the granules were between 150-710 microns in size.
  • the particles formed were free-flowing.
  • the spray-dried powder had a composition as shown in table 2 below.

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  • Engineering & Computer Science (AREA)
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  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
EP04256806A 2003-11-10 2004-11-04 Particules de détergent Withdrawn EP1529834A1 (fr)

Priority Applications (1)

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EP03257082A EP1529833A1 (fr) 2003-11-10 2003-11-10 Particules de détergent
EP03257082 2003-11-10
EP04256806A EP1529834A1 (fr) 2003-11-10 2004-11-04 Particules de détergent

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1582579A2 (fr) * 2004-03-29 2005-10-05 Nippon Shokubai Co., Ltd. Additif de detergence et de soin des tissus comtenant un polymère d'acide carboxylique

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063399A1 (fr) * 1981-04-22 1982-10-27 THE PROCTER & GAMBLE COMPANY Compositions détergentes granulaires contenant des polymères pelliculaires
DE3316513A1 (de) * 1983-05-06 1984-11-08 Joh. A. Benckiser Gmbh, 6700 Ludwigshafen Abriebfeste granulate auf basis von alkalialuminiumsilikat
EP0137669A1 (fr) * 1983-08-27 1985-04-17 The Procter & Gamble Company Compositions détergentes
US4707290A (en) * 1984-12-10 1987-11-17 Henkel Kommanditgesellschaft Auf Aktien Granular adsorbent
EP0270240A2 (fr) * 1986-10-31 1988-06-08 Unilever Plc Poudres détergentes et leur procédé de préparation
EP0421664A2 (fr) * 1989-10-02 1991-04-10 Rohm And Haas Company Granulés contenant des polymères
WO1992013937A1 (fr) * 1991-02-11 1992-08-20 Henkel Kommanditgesellschaft Auf Aktien Additif granule pour produits de lavage et de nettoyage
WO1994005764A1 (fr) * 1992-09-04 1994-03-17 Henkel Kommanditgesellschaft Auf Aktien Produits de lavage et de nettoyage contenant des adjuvants
EP0640684A1 (fr) * 1993-08-26 1995-03-01 Colgate-Palmolive Company Composition en poudre séchée par pulvérisation contenant des enzymes pour lave-vaisselle
EP1215277A1 (fr) * 2000-12-18 2002-06-19 Kao Corporation Particules de base et particules détergentes
WO2003091378A1 (fr) * 2002-04-26 2003-11-06 The Procter & Gamble Company Procede de sechage par pulverisation et compositions de detergent ainsi formees

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063399A1 (fr) * 1981-04-22 1982-10-27 THE PROCTER & GAMBLE COMPANY Compositions détergentes granulaires contenant des polymères pelliculaires
DE3316513A1 (de) * 1983-05-06 1984-11-08 Joh. A. Benckiser Gmbh, 6700 Ludwigshafen Abriebfeste granulate auf basis von alkalialuminiumsilikat
EP0137669A1 (fr) * 1983-08-27 1985-04-17 The Procter & Gamble Company Compositions détergentes
US4707290A (en) * 1984-12-10 1987-11-17 Henkel Kommanditgesellschaft Auf Aktien Granular adsorbent
EP0270240A2 (fr) * 1986-10-31 1988-06-08 Unilever Plc Poudres détergentes et leur procédé de préparation
EP0421664A2 (fr) * 1989-10-02 1991-04-10 Rohm And Haas Company Granulés contenant des polymères
WO1992013937A1 (fr) * 1991-02-11 1992-08-20 Henkel Kommanditgesellschaft Auf Aktien Additif granule pour produits de lavage et de nettoyage
WO1994005764A1 (fr) * 1992-09-04 1994-03-17 Henkel Kommanditgesellschaft Auf Aktien Produits de lavage et de nettoyage contenant des adjuvants
EP0658189A1 (fr) * 1992-09-04 1995-06-21 Henkel Kgaa Produits de lavage et de nettoyage contenant des adjuvants.
EP0640684A1 (fr) * 1993-08-26 1995-03-01 Colgate-Palmolive Company Composition en poudre séchée par pulvérisation contenant des enzymes pour lave-vaisselle
EP1215277A1 (fr) * 2000-12-18 2002-06-19 Kao Corporation Particules de base et particules détergentes
WO2003091378A1 (fr) * 2002-04-26 2003-11-06 The Procter & Gamble Company Procede de sechage par pulverisation et compositions de detergent ainsi formees

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1582579A2 (fr) * 2004-03-29 2005-10-05 Nippon Shokubai Co., Ltd. Additif de detergence et de soin des tissus comtenant un polymère d'acide carboxylique
EP1582579A3 (fr) * 2004-03-29 2005-12-21 Nippon Shokubai Co., Ltd. Additif de detergence et de soin des tissus comtenant un polymère d'acide carboxylique

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