ES2379979T5 - Laundry treatment composition - Google Patents

Abstract

According to the invention there is provided a granular laundry treatment composition including a spherical SiO2 particle for use in the wash cycle. A method for applying these compositions during the wash cycle of a laundry process as well as the use of these particles to reduce clothes damage is also included.

Description

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DESCRIPTION

Casting treatment composition Field of the invention

The present invention relates to laundry detergent compositions added to the wash and methods for use during the washing cycle of a consumer laundry process.

Background

Colored clothes are extremely common among consumers. To remove dirt in the wash, the clothes are vigorously agitated in water with a wash formulation. This procedure leads to deterioration of clothing surfaces, which reduces their aesthetic appeal. Deterioration is particularly a problem when granular casting compositions are used.

WO 2007/11887 (Procter & Gamble) describes liquid compositions comprising a contrast dye and a brightening agent. The brightening agent is added to counteract the darkening effect of the contrast dye on the appearance of the liquid composition. The brightening agent may be of an organic or inorganic nature, glass or glass coated with metal oxides being described.

US 4,051,046 (Procter & Gamble) describes detergent compositions comprising a surfactant and low concentrations of a particulate material, substantially soluble in water, with a range of 1 to 50 micrometers to provide fabric advantages. The document also describes that the use of water insoluble materials, in the form of particles, having an average diameter of more than about 50 micrometers will not bring the mentioned advantages to the fabrics.

Summary of the invention

It has been found that CiO2 particles provide improved color care by reducing the deterioration caused by fabric washing.

The invention provides the use of spherical SiO2 particles chosen from glass, which have a size in the range of 100 to 2,000 micrometers, to reduce the deterioration of the fabrics being washed during a domestic main washing procedure.

In the aforementioned use, the SiO2 spherical particle is chosen from glass.

Detailed description of the invention

The quantity of components in the granular laundry treatment composition expressed herein is in% p of the total composition, unless otherwise stated.

The spherical SiO2 particles must have a sphericity (ratio of axes) of> 80%, preferably> 94%. Sphericity (axes ratio) is a measure of the length / width ratio, with values in the range of 0-1. The length is the shortest axis and the width is the longest axis. A perfect circle has a sphericity value of 1.0 and a fine rectangle has values that approximate 0. To calculate the sphericity, images of the particles should be taken, preferably with a suitable microscope, for example, a Pharma Vision 830 available at Malvern®.

The spherical particle of SiO2 is chosen from glass.

The size of the spherical particle of SiO2 is 100 to 2,000 micrometers, preferably 100 to 1,000 micrometers, more preferably 100 to 500 micrometers, for example, 100 to 200 micrometers.

The size of the spherical particle of SiO2 is measured using graduated sieves and is the one that is retained or passes through these sieves.

The spherical particle of SiO2 comprises SiO2 at a level of 50 to 100% p, preferably 55 to 100% p, more preferably 65 to 100% p. Alternatively, the SiO2 particles may contain other components, of which Na2O, CaO and MgO are examples. If they are even present, the other components are preferably present at 45% p or less, more preferably 35% p or less, based on the% p of the SiO2 particle.

Surfactant

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The composition comprises between 2 and 70% p of a surfactant, more preferably 10 to 30% p. In general, the non-ionic and anionic surfactants of the surfactant system may be chosen from the surfactants described in the publication "" Surface Active Agents "Vol. 1, by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents", published by the Manufacturing Confectioners Company or in the publication "Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981. Preferably, the surfactants Used are saturated.

Non-ionic detergent compounds that 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 alone or with propylene oxide. The specific non-ionic detergent compounds are condensed from C6 to C22 alkyl-phenol / ethylene oxide, generally with 5 to 25 EO, that is, 5 to 25 units of ethylene oxide per molecule and the condensation products of C8 aliphatic alcohols to C16 primary or secondary, linear or branched, with ethylene oxide, generally 5 to 40 EO.

Suitable anionic detergent compounds that can be used are usually water-soluble alkali metal salts of sulfates and organic sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl part of the radicals upper acyls Examples of suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulfates, especially those obtained by sulfating higher C8 to C18 alcohols, produced, for example, from tallow or coconut oil, C9 to C20 alkyl benzene sulphonates of sodium and potassium, particularly C10 to C15 alkyl-linear secondary sodium benzene sulphonates and sodium alkyl glyceryl ether sulfates, especially those ethers of the higher alcohols derived from tallow and coconut oil and synthetic alcohols derived from petroleum. Preferred anionic detergent compounds are C11 to C15 alkyl sodium benzene sulphonates and C12 alkyl to C13 sodium sulfates. Also applicable are surfactants such as those described in EP-A-328177 (Unilever), which show desalination resistance, the alkyl polyglycoside surfactants described in EP-A-070074 and alkyl monoglycosides. Preferred surfactant systems are mixtures of active materials such as non-ionic detergents, in particular the groups and examples of anionic and non-ionic surfactants indicated in EP-A-346995 (Unilever). Especially preferred is a surfactant system that is a mixture of an alkali metal salt of a C15 to C18 primary alcohol sulfate together with a 3 to 7 EO ethoxylate of C12 to C15 primary alcohol.

The non-ionic detergent is preferably present in amounts of more than 10%, for example 25 to 90% p of the surfactant system. Anionic surfactants may be present, for example, in amounts in the range of about 5% p to about 40% p of the surfactant system.

Detergency builders or complexing agents

The composition comprises 1 to 50% p of a detergency builder.

The detergency builder materials can be selected from 1) calcium sequestering materials, 2) precipitating materials, 3) calcium ion exchange materials and 4) mixtures thereof.

It is preferred that when using an insoluble inorganic detergency builder, for example zeolite, the size is in the range of 0.1 to 10 micrometers (measured by the The Mastersizer 2000 particle size analyzer using laser diffraction of the Malvern® company).

Examples of detergency builder materials, calcium sequestrants, include alkali metal polyphosphates such as sodium tripolyphosphate and organic sequestrants such as ethylenediamine tetracetic acid.

Examples of precipitating materials, builders, include sodium orthophosphate and sodium carbonate.

Examples of calcium ion exchange detergency builder materials include the various types of water-insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representative examples, for example, zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the type zeolite P described in EP-A-0.384.070.

The composition may also contain 0-50% p of a detergency builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, alkyl- or alkenyl succinic acid, nitrilotriacetic acid or the other detergency builders mentioned below. Many detergency builders are also bleaching stabilizing agents due to their ability to complex metal ions.

Zeolite and carbonate (including bicarbonate and sequicarbonate) are the preferred detergency builders.

The composition may contain as a detergency builder a crystalline aluminosilicate, preferably a

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alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is normally present at a level of less than 15% p. Aluminosilicates are materials that have the general formula:

0.8-1.5 M2O.Al2O3.0.8-6 SiO2

in which M is a monovalent cation, preferably sodium. These materials contain some binding water and they need to have a calcium ion exchange capacity of at least 50 mg CaO / g. Preferred sodium aluminosilicates contain 1.5-3.5 SiO2 units in the above formula. They can be easily prepared by a reaction between sodium silicate and sodium aluminate, as is widely described in the literature. The ratio of surfactants to aluminosilicate (when present) is preferably greater than 5: 2, more preferably greater than 3: 1.

Alternatively or additionally to aluminosilicate detergency builders, phosphate builders can be used. In this technique the term "phosphate" encompasses species of diphosphate, triphosphate and phosphonate. However, the composition comprises less than 1% p of these phosphate builders. Preferably, the laundry detergent formulation is a laundry detergent formulation with non-phosphate builders.

Other forms of improvers include silicates, such as soluble silicates, metasilicates or layered silicates (eg, SKS-6 from Hoechst).

It has also been found that the presence of an inorganic detergency builder, in particular a zeolite or other insoluble inorganic particulate materials contributes to the wear of the fabrics under the washing conditions. The use of spherical particles of SiO2 improves this problem.

Shading agent

The granular laundry treatment composition preferably comprises a blue or violet shading agent in the range of 0.0001 to 0.01% p. Shading agents reduce the perception of deterioration in many colored clothing and increase the whiteness of white clothing.

Shading agents are preferably selected from blue and violet dyes of the type of basic, direct and acid dispersed solvents cited in the color index (Society of Dyers and Colourists) and American Association of Textile Chemists and Colorists 2002 [American Association of Textile and Colorist Chemicals 2002]).

Preferably, a direct blue direct violet dye is present. Preferably, the dyes are bis-azoic or tris-azoic dyes or of the triphenedioxazine type. Becidene carcinogen based dyes are not preferred.

Dyes containing bis-azoic copper can be used as direct violet 66.

The most preferred bis-azo dyes have the following structure:

image 1

image2

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rings D and E can independently be naphthyl or phenyl, as shown;

Ri is selected from: hydrogen and C1-C4 alkyl, preferably hydrogen;

R2 selects from: hydrogen, C1-C4 alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl, preferably phenyl;

R3 and R4 are independently selected from: hydrogen and C1-C4 alkyl, preferably hydrogen or methyl;

X and Y are independently selected from: hydrogen, C1-C4 alkyl and C1-C4 alkoxy, preferably the dye has X = methyl; and Y = methoxy and n is 0, 1 or 2, preferably 1 or 2.

Preferred bis-azo dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, and direct violet 99.

The preferred solvent and dispersed dyes are selected from mono-azoic or anthraquinone dyes, most preferably, solvent violet 13, dispersed violet 27 dispersed violet 26, dispersed violet 28, dispersed violet 63 and dispersed violet 77.

The preferred pigment is violet pigment 23.

Enzymes

The granular laundry treatment composition preferably comprises one or more enzymes that provide cleaning performance and / or advantages for fabric care. Examples of suitable enzymes include, but are not limited to hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, mananases, pectates, lyases, keratinases, reductases, oxidases, phenoxidases, lipoxyases, pulloases , pentosanases, malanases, arabinosidases, hyaluronidase, chondroitinase, lactase and amylases, or mixtures thereof. A typical combination is a combination of enzymes that can comprise, for example, a protease and a lipase in conjunction with an amylase. When present in a cleaning composition, the aforementioned additional enzymes may be present at levels from about 0.0001% to about 2% p, is from about 0.0001% p to about 1% p or even from about 0.001% p to approximately 0.5% p of enzyme protein by weight of the composition.

Preferred enzymes are cellulases.

Fluorescent agent

The composition preferably comprises a fluorescent agent (optical brightener). Fluorescent agents are well known and many of these fluorescent agents are commercially available. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, sodium salts. The total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2% p, more preferably 0.01 to 0.1% p. Preferred classes of fluorescents are: di-styryl diphenyl compounds, for example, Tinopal (registered trademark) CBS-X, diamino-stilbene-disulfonic acid compounds, for example, Tinopal DMS pure Xtra and Blankophor (registered trademark) HRH and pyrazoline compounds, for example, Blankophor SN. Preferred fluorescents are 2- (4-styryl-3-sulfophenyl) -2H-naphthol [1,2-d] tetrazol sodium, 4,4'-bis {[(4-anilino-6- (NE-methyl- N-2-hydroxyethyl) amino-1,3,5-triazin-2-yl)] amino} stilbene-2,2'-disulfonate disodium, 4,4'-bis {[(4-anilino-6-morpholino -1,3,5-triazin-2-yl)] amino} -stilbene-2,2'-disulfonate disodium and 4,4'-bis (2-sulfoestyryl) biphenyl disodium.

Fragrance

Preferably, the composition comprises a perfume. The perfume is preferably in the range of 0.001 to 3% p, most preferably 0.1 to 1% p. Many suitable examples of perfumes are provided by the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.

It is common for a plurality of perfume components to be present in a formulation. In the compositions of the present invention, it is envisioned that there are four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.

In perfume mixtures preferably the maximum values are from 15 to 25% p. The maximum values are defined by the entity Poucher (Journal of the Society of Cosmetic Chemists 6 (2): 80 [1955]). Preferred higher values are selected from citric oils, linalool, linalyl acetate, lavender, dihydromyrcenol,

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rose oxide and cis-3-hexanol.

Perfume and superior value can be used to contribute to the fabric care advantage of the invention.

It is preferred that the laundry treatment composition does not contain a peroxygen bleach, for example, sodium percarbonate, sodium perborate and a peracide.

Polymers

The composition may comprise one or more polymers. Examples are carboxymethyl cellulose, polyethylene glycol, polyvinyl alcohol, polycarboxylates such as polyacrylates, maleic / acrylic acid copolymers and lauryl methacrylate / acrylic acid copolymers.

Polymers present to prevent the deposition of dyes, for example, polyvinylpyrrolidone, polyvinylpyridine-N-oxide, and polyvinylimidazole are preferably absent from the formulation.

Experimental part

Example 1

Three samples of knitted cotton fabric (20 by 20 cm) taken with Vat Blue 4 were washed in a compartment of a Quickwash Plus® fabric test system (SDL International). In a separate compartment, samples of equivalent knitted cotton were placed, but these were taken with Reactive Oragel 16. The machine was filled with 3.5 liters of water with a hardness of 26 ° French and 24.5 g of Persil colored powder ( from the United Kingdom), a Las / non-ionic surfactant powder enhanced with zeolite and carbonate. To this 0.5 g of antifoam was added. The washing lasted 15 minutes and thereafter the machine was emptied, centrifuged and then three rinses of 90 seconds were performed, emptying and centrifuging after each time. After washing, the cloth was dried in a drum. The procedure was repeated 5 times. Then the whole experiment was repeated, but with the addition of 1 g / l of various additives.

Following the washings, the reflectances of the clothes with VAT Blue at 420 nm and clothes with Reactive Orange at 650 nm were measured in a Murakami gonio spectrophotometer with an incidence angle of 65 ° and a measurement angle of 55 °. The reflectance of the new clothes was 27.20 for Vat Blue and 65.13 for the Orange reagent. The reflectance was compared with the reflectance of a new unwashed fabric and expressed as AR = | R (new) - R (washed) |. The AR (dust control) for Vat Blue was 6.06 and for Reactive Orange it was 5.36. In the results shown in Table 1, the average of AR is provided for clothes with blue and orange up to 1 decimal value.

Table 1

 Product

 ARmedio

 Witness powder

 5.7

 100-200 pm glass granule diameter

 4,5

 Glass granule diameter 400-800 pm

 4.6

 Arena, medium diameter 180 pm *

 4,5

 Gray silicon-aluminum ceramic microsphere diameter 1-40 pm *

 5.2

 Average diameter of white silicon-aluminum ceramic microspheres 1-40 pm *

 5.1

* indicates comparative examples

The glass granules were obtained from the Sigmund Lindner entity and had a SiO2 content of 72.5%

The sand was obtained from the Schlingmeier Quartz entity and had a SiO2 content of 98.9%

The particles of ceramic microspheres of silica-silica-aluminous were obtained from the company 3 M

Examples of silica-aluminous ceramic microspheres are comparative and show the advantage of SiO2 particles compared to other spherical inorganic particles.

SiO2 particles keep the clothes closer to the new one, as indicated by the smallest values of AR430.

Claims (1)

1. Use of spherical SiO2 particles chosen from glass having a size in the range of 100 to 2,000 micrometers, to reduce the deterioration of washed clothes during a domestic main washing procedure.