ES2232639T3 - COMPOSITION WITH COLORED MOTORS AND COMPOSITIONS OF PARTICULATED DETERGENT FOR LAUNDRY THAT CONTAIN IT. - Google Patents

Abstract

A particulate laundry detergent composition comprising a secondary proportion of a composition with colored spots having a color that contrasts with that of the main proportion of the composition, from 5 to 60% by weight of active detergent material and from 10 to 80% by weight of the detergency adjuvant characterized in that the composition with colored specks comprises at least 90% by weight of sodium chloride.

Description

Composition with colored specks and compositions of laundry detergent containing it.

Technical field

The present invention relates to a material colored particulate and its use as specks in compositions of particulate laundry detergent for use on fabrics that Hand or machine wash.

Background and prior art

It is well known to include particles that visually contrast, for example, colored specks or strips, in laundry detergent powders. This can be included as a consumer warning sign, to indicate the presence of any specific ingredient, for example, bleaching agent, or may simply be present to give the product an appearance attractive

The problems that have been observed with compositions with motes previously proposed include the limited dissolution, low fluidity properties, and a tendency of dye to stain fabrics during cleaning.

The specks are based on various materials carriers that have been described in the prior art.

GB1546139 (Procter & Gamble) describes colored spots in which a dye is held in the inorganic hydrated alkaline salt, for example, tripolyphosphate sodium, sodium carbonate or sodium tetraborate.

US 5606883 (Bernard et al.) describes agglomerates with colored specks comprising zeolite, non-ionic surfactant, dye, binder and water.

EP19413A (Unilever) describes specks colored based on a solid surfactant, for example, a Highly ethoxylated nonionic surfactant.

EP60728A (Unilever) describes specks colored prepared by spraying a detergent base powder with a aqueous dye solution that also contains a salt hydratable, preferably a phosphate, carbonate or sulfate.

GB2199338A (Unilever) describes specks colored prepared by mixing a detergent base powder with a coloring matter and treating it with a binder that is preferably a water soluble polymer (for example copolymer acrylic / maleic) or a non-ionic surfactant.

WO99 / 51714A (Unilever) describes colored specks in which the main carrier material is a alpha hydroxy carboxylic acid, preferably citric acid.

The other materials that have been proposed as bases for colored spots include soap, sodium metasilicate, and clays.

WO90 / 00006A (PPG Industries Inc) describes a particulate halogen bleaching composition, by example, calcium hypochlorite, which contains approximately 0.1 to 10% by weight of a particulate inorganic water soluble salt treated with dye, for example, sodium chloride.

US 4992193 (Lever Brothers) describes a conventional detergent powder containing strips based on soap (but not with specks) comprising 2-5% of inorganic salt (sodium chloride is specifically described) and optionally up to 0.1% by weight of coloring matter.

US 3850833 (Colgate-Palmolive) describes colored particles consisting of sodium chloride, potassium chloride and / or sodium sulfate for incorporation into a cleaner composition Detergent.

Summary of the Invention

The present inventors have now discovered than colored specks for use in detergent compositions for laundry they can be advantageously based on sodium chloride. Sodium chloride is stable, inert, highly soluble in water, and compatible with all the ingredients used in the compositions of laundry detergent

The spots show a behavior of excellent dissolution and fluidity properties, and it is observed that no they stain fabrics during cleaning.

Definition of the invention

The present invention provides accordingly a particulate laundry detergent composition comprising a secondary proportion of a composition with colored specks which has a color that contrasts with that of the main proportion of the composition, from 5 to 60% by weight of active detergent material and from 10 to 80% by weight of the detergency builder characterized because the composition with colored specks comprises a dye and at least 90% by weight of sodium chloride.

The present invention also provides a colored particulate composition for use as a composition with specks in a particulate laundry detergent composition, colored particulate composition comprising:

(to)

from 90 to 99.5% by weight, preferably 95 to 99% by weight, of chloride sodium,

(b)

from 0.01 to 6% by weight, preferably 0.02 to 0.5% by weight, of a Colorant,

and at least one from:

(c1)

from 0.1 to 10% by weight, preferably 0.2 to 5% by weight, of silica,

(c2)

from 0.1 to 10% by weight, preferably 0.2 to 1% by weight, of a flow aid other than a silica,

(c3)

from 0.01 to 3% by weight, preferably 0.02 to 0.5% by weight, of a opaque white pigment and,

(c4)

from 0.05 to 5% by weight, preferably 0.1 to 1% by weight, of a binder.

Detailed description of the invention The composition with specks

The speckled composition preferably contains from 90 to 99.5% by weight, more preferably from 95 to 99% by weight, of sodium chloride.

A dye is also essential. This can be a pigment, or a water dispersible dye. Preferred colors They are red and blue. A preferred pigment is CI Pigment Red 12490. Suitable blue dyes are phthalocyanines. The dye is present suitably in an amount of 0.01 to 5% by weight, preferably from 0.02 to 0.5% by weight, based on the composition with specks

Preferably a white pigment is present opaque to give the particles of particles enough opacity. A Suitable material is titanium dioxide. The opaque white pigment is suitably present in an amount of 0.01 to 3% by weight, preferably from 0.02 to 0.5% by weight.

According to a preferred embodiment of the invention the mottled composition contains silica, to provide a layer protective outer on the specks and to improve the flow. Silica is suitably present in an amount of 0.1% by weight, preferably 0.2 to 5% by weight.

The speckled composition also contains preferably a flow aid other than silica. The suitable flow auxiliaries are selected from silicates and aluminosilicates. The flow aid is properly present in an amount of 0.1, preferably 0.2 to 1% by weight.

The speckled composition also contains preferably a binder. Preferred binders are polymers, for example, cellulosic materials, for example, sodium carboxymethyl cellulose, or acrylic polymers, for example, acrylic / maleic copolymers such as Sokalan (Trade Mark) BASF CP5. Other organic film-forming materials can be provided, for example, highly ionic polyethylene glycols or nonionic surfactants ethoxylated. A particularly preferred binder is the sodium carboxymethylcellulose. The binder is present suitably in an amount of 0.05 to 5% by weight, preferably from 0.1 to 1% by weight.

Preparation of the composition with specks

The speckled composition can be prepared by any convenient procedure to treat sodium chloride With the dye. Any mixing device can be used suitable. The mixer should have an inner surface of stainless steel or other inert in view of the properties corrosive of sodium chloride.

In a preferred procedure, sodium chloride it is dosed in a mixer, and then a premix is added of the dye, the opaque white pigment and the binder. Whether incorporates silica, a secondary proportion is preferably added of silica with sodium chloride, and the main proportion is added after the addition of the dye premix. The auxiliary of flow is preferably added last. After a careful mixed to ensure homogeneity, the composition is dried.

Detergent compositions

The composition with colored specks of the invention is suitable for use in both compositions of white as colored detergent, provided there is enough contrast between the color of the main proportion of the powder and the color of the spots.

Therefore, the detergent composition can comprise a major proportion of white or colored particles clear and a secondary proportion of the composition with specks colored. Alternatively, the detergent composition may comprise a major proportion of particles that have a first color, for example, blue, and a secondary proportion of the composition with colored specks that has a second color that contrasts with the first color, for example, red.

The composition with specks is present preferably in an amount of 0.01 to 15% by weight, preferably from 0.1 to 10% by weight, more preferably from 1 to 10% by weight and more preferably from 2 to 8% by weight.

The detergent compositions according to the invention contain, in addition to the composition with specks, conventional detergent ingredients, activity materials detergent in particular (surfactants), and preferably also detergency builders.

Laundry detergent compositions high load according to the invention may comprise suitably 5 to 60% by weight of activity material detergent, from 10 to 80% by weight of detergency adjuvant, of 0.1 to 10% by weight of the specks, and optionally other ingredients of 100% weight detergent.

The detergent compositions will contain, such as essential ingredients, one or more detergent active compounds (surfactants) that can be chosen from active compounds soapy, non-soapy, anionic, cationic detergents, not ionic, amphoteric and bipolar, and mixtures thereof. Many Suitable detergent active compounds are available and are fully described in the bibliography, for example, in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch.

Preferred detergent active compounds that can be used are soaps and non-ionic and non-ionic compounds synthetic soaps. Surfactants are especially preferred non-soapy anionics.

Non-soap anionic surfactants are good known to those skilled in the art. Examples include alkylbenzene sulfonates, particularly sulfonates of linear alkylbenzene having an alkyl chain length of C 8 -C 15; primary alkyl sulfates and secondary, particularly primary alkyl sulfates C 8 -C 15; alkyl ether sulfates; olefin sulfonates; alkyl xylene sulfonates; sulfosuccinates dialkyl; and fatty acid ester sulfonates. Sodium salts They are generally preferred. The preferred anionic surfactant is linear alkylbenzene sulfonate.

Nonionic surfactants may be present optionally. These include primary alcohol and secondary ethoxylates, especially aliphatic alcohols C_ {8} -C_ {20} ethoxylates with an average of 1 to 20 moles of ethylene oxide per mole of alcohol, and more especially primary and secondary aliphatic alcohols C_ {10} -C_ {15} ethoxylates with an average of 1 to 10 moles of ethylene oxide per mole of alcohol. Surfactants Nonionic non-ethoxylated include alkyl polyglycosides, monoethers of glycerol, and polyhydroxyamides (glucamide).

The cationic surfactants may be present optionally. These include quaternary ammonium salts with the general formula R 1 R 2 R 3 R 4 N + X - in which the R groups are long or short hydrocarbyl chains, typically of alkyl, hydroxyalkyl or ethoxylated alkyl groups, and X is a solubilizing anion (for example, compounds in which R 1 is a C 8 -C 22 alkyl group, preferably a C 8 -C 10 alkyl group or C 12 -C 14, R 2 is a methyl group, and R_ {3} and R_ {4}, which can be the same or different, are groups methyl or hydroxyethyl); and cationic esters (for example, esters of hill).

In a preferred cationic surfactant especially with the general formula R 1 R 2 R 3 R 4 N + X - R 1 represents a C 8 -C 10 alkyl group or C 12 -C 14, R 2 and R 3 represent methyl groups, R 4 has a hydroxyethyl group, and X - represents a halide or methosulfate ion.

Optionally, amphoteric surfactants, by for example, amine oxides, and bipolar surfactants, for example, betaines may also be present.

Preferably, the magnitude of surfactant anionic is in the range of 5 to 50% by weight of the composition total. More preferably, the magnitude of anionic surfactant it is in the range of 8 to 35% by weight, more preferably 10 to 30% by weight.

The nonionic surfactant, if present, will be preferably used in an amount within the range of 1 to 20% in weigh.

The total amount of surfactant present is preferably within the range of 5 to 60% by weight.

The compositions may adequately contain 10 to 80% by weight, preferably 15 to 70% by weight, of adjuvant detergency. Preferably, the magnitude of adjuvant is in the range of 15 to 50% by weight.

Detergent compositions may contain as an adjuvant a crystalline aluminosilicate, preferably a alkali metal aluminosilicate, more preferably a sodium aluminosilicate (zeolite).

The zeolite used as an adjuvant can be the commercially used zeolite A (zeolite 4A) widely used now in laundry detergent powders. Alternatively, the zeolite can be maximum aluminum zeolite P (MAP zeolite) as describes and claims in EP384.070B (Unilever), and commercially available as Doucil (Trade Mark) A24 from Crosfield Chemicals Ltd, UK.

The zeolite MAP is defined as an aluminosilicate of alkaline metal of the zeolite P type which has a proportion of silicon to aluminum not exceeding 1.33, preferably within the range from 0.90 to 1.33, preferably within the range of 0.90 to 1.20.

Especially preferred is zeolite MAP which has a ratio of silicon to aluminum that does not exceed 1.07, more preferably about 1.00. The particle size of Zeolite is not critical. Zeolite A or zeolite MAP of any suitable particle size.

They are also preferred according to the present invention. phosphate adjuvants, especially sodium tripolyphosphate. This can be used in combination with sodium orthophosphate, and / or pyrophosphate sodium

Other inorganic adjuvants that may be present additionally or alternatively include carbonate sodium, stratified silicate, amorphous aluminosilicates.

More preferably, the adjuvant is selected between sodium tripolyphosphate, zeolite, sodium carbonate, and combinations thereof.

Organic adjuvants may be present optionally These include polycarboxylate polymers such as acrylic / maleic polyacrylates and copolymers; polyaspartates; monomeric polycarboxylates such as citrates, gluconates, oxidisuccinates, mono-di- and trisuccinates of glycerol, carboxymethyloxysuccinates, carboxymethylximalonates, dipicolinates, hydroxyethyl iminodiacetates, malonates and alkyl and alkenyl succinates; and fatty acid salts sulphonated

Organic adjuvants can be used in secondary amounts as supplements to inorganic adjuvants such as phosphates and zeolites. Organic adjuvants Especially preferred supplements are citrates, used suitably in amounts of 5 to 30% by weight, preferably of 10 to 25% by weight; and acrylic polymers, more especially acrylic / maleic copolymers, properly used in amounts of 0.5 to 15% by weight, preferably 1 to 10% by weight.

Adjuvants, both inorganic and organic, they are preferably present in the form of alkali metal salts, especially sodium salt.

The detergent compositions according to the invention may also suitably contain an agent system bleaching agent, even if the formulations without bleaching agent are also within the scope of the invention.

The bleaching agent system is based preferably in bleaching peroxyagent components, by for example, inorganic persalts or organic peroxyacids, with ability to produce hydrogen peroxide in aqueous solution. The Suitable bleaching peroxyagent compounds include peroxides organic such as urea peroxide, and inorganic persalts such as alkali metal perborates, percarbonates, perfosphates, persilicates and persulfates. Preferred inorganic persalts are sodium perborate monohydrate and tetrahydrate, and percarbonate sodium The bleaching peroxyagent compound is present suitably in an amount of 5 to 35% by weight, preferably of 10 to 25% by weight.

The bleaching peroxyagent compound can be used together with a bleaching agent activator (precursor of bleaching agent) to improve the bleaching action at low cleaning temperatures. The bleaching agent precursor is properly present in an amount of 1 to 8% by weight, preferably from 2 to 5% by weight.

Preferred bleaching agent precursors they are precursors of peroxycarboxylic acid, more especially peracetic acid precursors and acid precursors peroxybenzoic; and peroxycarbonic acid precursors. A especially suitable preferred bleaching agent precursor for use in the present invention is N, N, N ', N' tetraacetyl of ethylenediamine (TAED).

A stabilizer of the bleaching agent (heavy metal sequestrant). The Suitable bleaching agent stabilizers include ethylenediamine tetraacetate (EDTA) and polyphosphonates such as Dequest (Trade Mark), EDTMP.

Detergent compositions may also contain one or more enzymes. Suitable enzymes include the proteases, amylases, cellulases, oxidases, peroxidases and lipases useful for incorporating into detergent compositions.

Preferred proteolytic enzymes (proteases) they are catalytically active protein materials that degrade or alter types of spot protein when presented as in fabric stains in a hydrolysis reaction. Can be of any suitable origin, such as plant, animal origin, Bacterial or yeast.

Proteolytic enzymes or proteases of various magnitudes and origins and that have activity in Various pH ranges of 4-12. The both high and low isoelectric point proteases.

Other enzymes that may be present suitably include lipases, amylases, and cellulases that include High activity cellulases such as Carezyme de Novo.

In particulate detergent compositions, the detergency enzymes are commonly used in granular form in amounts from about 0.1 to about 3.0% in weight. However, any suitable physical form of enzyme can be used in any effective amount.

Anti-redeposition agents, for example, cellulose esters and ethers, for example carboxymethyl cellulose sodium, may also be present.

The compositions may also contain polymers to remove dirt, for example PET / POET polymers sulphonated and non-sulphonated, both topped off and not topped at the end, and alcohol graft copolymers polyethylene glycol / polyvinyl such as Sokolan (Trade Mark) HP22.

The preferred dirt removal polymers especially are the unfinished polyesters at the end sulphonates described and claimed in WO9,532,997A (Rhodia Chimie).

Detergent compositions may also include one or more inorganic salts in addition to adjuvant salts. These may include, for example, sodium bicarbonate, sodium silicate, sodium sulfate, magnesium sulfate, calcium sulfate, calcium chloride and sodium chloride. Preferred inorganic salts are sodium sulfate, sodium chloride, and combinations thereof. The composition with colored spots is especially suitable for incorporating into detergent compositions containing sodium chloride in addition to being presented in the composition with
specks

Detergent compositions may contain also other inorganic materials, for example, calcite, silica, amorphous aluminosilicates, or clays.

Other ingredients that may be present include solvents, hydrotropes, fluorescents, dyes, photo bleachers, foam boosters or foam controllers (defoamers) as appropriate, conditioning compounds of fabrics, and perfumes.

A preferred detergent composition especially according to the invention comprises:

(i)

from 10 to 30% by weight of linear alkylbenzene sulphonate,

(ii)

from 5 to 60% by weight of detergency adjuvant selected from sodium tripolyphosphate, sodium carbonate, zeolite and combinations of the same,

(iii)

from 0 to 50% by weight of sodium chloride,

(iv)

from 1 to 10% by weight of the composition with colored specks,

(v)

optionally other ingredients up to 100% by weight, preferably selected between sodium carboxymethyl cellulose, sodium sulfate, clay bentonite, fluorescent, dye of a color that contrasts with the Composition with colored specks, and perfume.

The detergent compositions of the invention They can be in powder or pill form.

Low to moderate bulk density powders they can be prepared by spray drying a suspension, and optionally post-dosing (dry mixing) others ingredients. "Concentrated" or "compact" powders can be prepared by mixing and granulation procedures, by example, using a high speed mixer / granulator, or others procedures without column. In both types of powder, the composition with specks can be incorporated by post dosing (mixed dry).

The detergent composition of the invention It can alternatively be in the form of a pill. Pills can be prepared by compacting powders, especially powders "concentrated" or "compact", prepared as described higher. The composition with specks is then included in the anterior powder for compaction.

Examples

The invention will now be illustrated in more detail. by means of the following Examples, in which the parts and percentages are indicated by weight, unless otherwise indicated thing.

Example 1 Composition with pink specks

A composition with specks was prepared with the following formulation:

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Ingredient % in weigh Sodium chloride 98.50 Silica 1.00 Sodium carboxymethylcellulose 0.16 Zeolite 0.35 Titanium dioxide, dispersed CI 77891 0.05 CI Red Pigment 12490 0.09

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The composition was prepared as follows. The ingredients were introduced in a stainless steel mixer in the following order:

one.

Sodium chloride

2.

Silica (0.33% by weight)

3.

Pigment Solution (Dioxide titanium, red dye, sodium carboxymethyl cellulose)

Four.

Silica (the rest)

5.

Zeolite

The ingredients were mixed for a period long enough to ensure homogeneity, and then the resulting particulate material dried.

The specks were an attractive pink color.

Comparative Examples A to C

The specks using the same dye were prepared using the following materials instead of sodium chloride
co:

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Comparison of Example Carrier material TO Soap B Sodium metasilicate C Sodium carbonate

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Detergent compositions

The speckled compositions of Example 1 and Comparative Examples A, B and C were introduced, at a level of 4% in weight, in samples of a laundry detergent powder that has The following formulation:

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Ingredient % in weigh Alkylbenzene sulphonate linear 14,700 Tripolyphosphate sodium 1,024 Zeolite (100%) 4,863 Carbonate sodium 24,200 Composition with specks (1, A, B or C) 4,000 Sodium chloride 45,7486 Sodium sulfate 0.0205 Bentonite clay 2.6621 Fluorescent (Tinopal * CBS-X, DMS) 0.1822 Carboxymethyl sodium cellulose 0,1184 Blue coloring 0.0124 Fragrance 0.2700 Water e secondary ingredients remaining

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The pink specks of Example 1 had a strong visual impact giving the product an attractive appearance. At Storage was not observed loss of color of the spots.

Dissolution and staining test

Detergent compositions and compositions with specks were examined for dissolution and for spotting the cloth.

The solution was measured by a procedure of conductivity.

Spotting was measured using the methodology of Cleaning in container by hand. The fabrics used were cotton fabric, and polyester (67%) / cotton (33%).

Three hand wash procedures were used different:

(i)

he powder was dissolved in water in a container and then they added the fabrics,

(ii)

the fabrics were placed in the water in the container and then added the powder,

(iii)

the fabrics got wet thoroughly and directly applied a concentrated paste (powder and a little Water).

In procedures (i) and (ii), the detergent compositions were used at a concentration in the 3.5 g / l cleaning liquid.

The fabrics were soaked for 1 hour and for 2 hours and the fabrics were cleaned and rinsed continuously.
tion.

The compositions with specks were also placed directly on wet fabrics for 1 hour and 2 hours of laying soak.

The results were as follows:

Example one TO B C Dissolution Good Poor Good Good Stained Do not Do not Yes Yes

Only specks based on sodium chloride Example 1 give good dissolution without any stained cloth. I dont know observed spotting even under the greatest conditions of tension.

Claims (16)

1. A particulate laundry detergent composition comprising a secondary proportion of a composition with colored spots having a color that contrasts with that of the main proportion of the composition, from 5 to 60% by weight of active detergent material and from 10 to 80% by weight of the detergency adjuvant characterized in that the composition with colored specks comprises at least 90% by weight of sodium chloride. 2. A detergent composition according to claim 1, characterized in that the composition with colored spots comprises:

(to)

from 90 to 99.5% by weight, preferably 95 to 99% by weight, of chloride sodium,

(b)

from 0.01 to 6% by weight, preferably 0.02 to 0.5% by weight, of a Colorant,

(C)

optionally 0.1 to 10% by weight, preferably 0.2 to 5% by weight of silica,

(d)

optionally 0.1 to 10% by weight, preferably 0.2 to 1% by weight, of a flow aid other than silica,

(and)

optionally from 0.01 to 3% by weight, preferably from 0.02 to 0.5% by weight, of a white pigment opaque,

(F)

optionally from 0.05 to 5% by weight, preferably 0.1 to 1% by weight, of a binder.

3. A detergent composition according to any of the preceding claims, characterized in that it comprises from 0.01 to 15% by weight, preferably from 0.1 to 10% by weight, more preferably from 1 to 10% by weight, of the composition With colored specks. 4. A detergent composition according to any of the preceding claims, characterized in that it further comprises additional sodium chloride which is present in the composition with colored spots. 5. A detergent composition according to any of the preceding claims, characterized in that it comprises a main proportion of white or light colored particles and a secondary proportion of the composition with colored spots. 6. A detergent composition according to any one of claims 1 to 4, characterized in that it comprises a main proportion of particles having a first color and a secondary proportion of the composition with colored spots having a second color that contrasts with the first color . 7. A detergent composition according to claim 6, characterized in that the main proportion of particles is blue and the composition with colored spots is red. 8. A detergent composition according to any of the preceding claims, characterized in that it comprises from 0.1 to 10% by weight of the composition with colored spots, and optionally other detergent ingredients up to 100% by weight. 9. A detergent composition according to claim 8, characterized in that it comprises:

(i)

from 10 to 30% by weight of linear alkylbenzene sulphonate,

(ii)

from 5 to 60% by weight of the detergency adjuvant selected from sodium tripolyphosphate, sodium carbonate, zeolite and combinations of the same,

(iii)

from 0 to 50% by weight of sodium chloride,

(iv)

from 1 to 10% by weight of the composition with colored specks,

(v)

optionally other ingredients up to 100% by weight, preferably selected between sodium carboxymethyl cellulose, sodium sulfate, clay bentonite, fluorescent, dye of a color that contrasts with the of the composition with colored specks, and perfume.

10. A detergent composition according to any of the preceding claims, characterized in that it is in the form of a powder or tablet. 11. A colored particulate composition for use as a mottled composition in a particulate laundry detergent composition, characterized in that the colored particulate composition comprises:

(to)

from 90 to 99.5% by weight, preferably 95 to 99% by weight, of chloride sodium,

(b)

from 0.01 to 6% by weight, preferably 0.02 to 0.5% by weight, of a Colorant,

and at least one from:

(c1)

from 0.1 to 10% by weight, preferably 0.2 to 5% by weight, of silica,

(c2)

from 0.1 to 10% by weight, preferably 0.2 to 1% by weight, of a flow aid other than silica,

(c3)

from 0.01 to 3% by weight, preferably 0.02 to 0.5% by weight, of a opaque white pigment,

(c4)

from 0.05 to 5% by weight, preferably 0.1 to 1% therein, of a binder.

12. A colored particulate composition according to claim 11, characterized in that it comprises a flow aid (c2) selected from silicates, aluminosilicates and mixtures thereof. 13. A colored particulate composition according to claim 11 or claim 12, characterized in that the dye (b) is a red or blue pigment. 14. A colored particulate composition according to any one of claims 11 to 13, characterized in that it comprises titanium dioxide as an opaque white pigment (c3). 15. A colored particulate composition according to any one of claims 11 to 14, characterized in that it comprises a polymeric binder (c4). 16. A colored particulate composition according to claim 15, characterized in that the polymeric binder (c4) is sodium carboxymethyl cellulose.