BRPI0603150B1 - aqueous textile treatment liquid, concentrate for dilution to form a liquid and use of liquid - Google Patents

Abstract

An aqueous textile treatment liquor suitable for use in a domestic laundering process comprising a detersive surfactant, positively charged, particulate material having a particle size of 5-200nm, and, an emulsified, water-dispersible silicone blend comprising both silicone and at least one amino-silicone, the weight ratio of silicone to amino silicone being in the range 20:1 to 3:1 and said silicone blend having a droplet size of 5-20 microns.

Description

FIELD OF TEXTILE TREATMENT CONCENTRATED FOR DILUTION TO FORM A LIQUID AND LIQUID USE Field of the Invention The present invention relates to the treatment of textiles during a washing process. In particular, it refers to treatments that will soften tissues and reduce the incidence of crease formation during use.

Background of the Invention Physical fold reduction techniques such as heat and pressure (e.g., vacuum compression / ironing) are established and effective means of ironing garments. However, the effect is not permanent and the folds reappear 'in use' due to a range of shear, torsion and compression forces. Body heat and moisture enhance the effect of these forces.

Chemical pleat reduction techniques are also known. These can be rationalized in three approaches; (a) the use of lubricants to improve crease recovery, (b) the use of crosslinking agents and film formers to harden the fibers to resist creases in the first place, and (c) the combination of (a) and (B).

A wide range of lubricants and crosslinking agents have been proposed. Lubricants used in the prior art include silicones such as polydimethyl siloxane (PDMS), amino silicones, modified silicones, silicone copolymers, softeners (e.g., quaternary ammonium compounds) and other lubricants such as clays, waxes, polyolefins, synthetic oils and natural.

Film formers and cross-linking agents suggested in the prior art include: natural polymers (such as enzymes, proteins, cyclodextrins, polysaccharides, e.g. starch, chitin, chitosan, cellulose, 3-1,4-polysaccharides, SCMC, gum guar, HEC, etc.), and synthetic polymers (such as polyamides, polyurethanes, polyamines, polyolefins, polyols, PEGs, polystyrene, PVA, PVC, vinyl polymers, acrylics). Functionally, some of these have been described as film-forming polymers, reactive polymers (such as curable epichlorohydrin-containing, isocyanate-containing or epoxy-containing materials), or elastomeric polymers (including thermoplastic elastomers and silicone elastomers).

Other attempts to prevent folds have employed small molecules such as salts, amino acids, sugars, saccharides, oligosaccharides, alcohols and acids. Known crosslinking agents also include compositions based on methylol urea, carboxylic acid, formaldehyde, ammonia, triazine, and epoxide. Patent Application WO 2004 / 018762A1 (Philips) describes the use of crosslinked fuse elastomeric film formers to improve pleat recovery in spray or iron cartridge applications. WO 2004/048677 (Philips) describes film formers for recovery in spray or iron cartridge applications that include fusible elastomers plus polycation salt for elastomer crosslinking. WO 2001 / 25381-5 (Ciba) discloses compositions with (A) a fabric softener, (B) an additive and (C) selected polyorganosilicones to impart to fabrics in domestic anti-pelleting applications, elasticity, hydrophilic capacity , folding and fold recovery, respectively. These properties are conferred by organosilicone. Among the additives, polysilicic acid is mentioned.

Both WO 2002/088293 and US-A1-2002 / 019236 (Unilever) describe fabric care compositions comprising coated particles comprising a solid core having an average particle size ≤3.2 in 10. and 700 nm in diameter and a silicone polymer coating covalently bonded to the solid core. Silica is mentioned in a list of appropriate solid core materials. EP-A-1201817 (Procter & Gamble) describes amino silicones with sterically hindered functional groups for fold resistance in use, which are preferably applied by a sprinkler during the domestic ironing process. EP-A-1096060 (Procter & Gamble) describes water soluble silicone lubricants in combination with various polymeric compounds (film formers) which are considered to be tissue donors of at least + fold recovery angle. 15 units above and above water. EP-A-953675A2 (Dow Corning) is a textile fabric coated with a silicone based elastomeric compound with a reinforcing filler preferably a silica plus a second laminar filler preferably talc and mica. Coated fabrics, among other benefits, have less friction and are used for car seat belts. There is no teaching about the benefit of folds of mixing silicone with particulate fillers. GB 842027 (Monsanto Chemicals) describes friction enhancing compositions of silica nanoparticle based textiles dispersed within drops of an oil emulsion. The oil may be any of the known textile oils, including mineral or vegetable oils. The ratio of oil to silica is greater than 6 and deposition levels of 3 to 7% oil and 0.1 to 0.5% silica by tissue weight are preferred.

The use of so-called 'nanoparticles' for tissue treatment has been proposed. WO 02/064877 (P&G) describes coating compositions comprising a nanoparticle system of a size of 750 nm or less, with a lower limit of '0' nm. Examples provided include synthetic silica (10 - 40 nm), boehemite alumina (2 - 750 nm) and nanotubes (2 - 50 nm). Clays, particularly plate-type laponites (25 to 40 nm wide and ~ 1 nm thick) are considered appropriate, and organic materials such as nano-latex are proposed. ΈΡ 1371718 (Rohm and Haas) describes 1-10 nm polymer nanoparticles as a tissue care additive. These can be organically modified with silicones. WO 02/18451 (Rhodia) describes the use of nanoparticles in a polymeric or nano-latex form. DE 10248583 (Nanogate Technologies GmbH) describes the use of inorganic nanoparticles as a carrier for a silane material. Prior copending patent application PCT / EP2005 / 012863, not published on the filing date of the present application, describes the use of 1 - 10 nm negatively charged hybrid organic / inorganic nanoparticles in a surfactant composition suitable for cotton treatment. These particles are believed to penetrate the pores of the cotton fiber and this hardens the fiber. US 2,635,056 (Monsanto) describes the treatment of textiles and fabrics with a silica aquasol plus a polyhydric alcohol such as glycerol. The blends are called alcohol-aquasols and impart exceptional slip resistance to textiles and a surprisingly good fabric feel and feel attributed to the presence of glycerol. The ratio of silica to glycerol used in the example of is 1.4. It is indicated that the level of polyhydric alcohol should not exceed twice the level of silica. Patent application WO-2001/083875 (Ajinomoto Co.) describes the application of silica and a softener with a cationic acrylic binder followed by the application of a treatment liquid containing arginine to nylon seals to obtain care benefits. to the skin when seals are used. EP-A-1024119 (Relats) describes textile articles made of fibers containing S1O2 and the procedure for improving their thermal stability. JP 04255767 (Nichihan Kenkiusho KK) describes textile coating compositions comprising a synthetic (acrylic) emulsion, colloidal or microparticulate silica metal oxide gel and a zeolite to obtain textile coatings with good bactericidal properties, deodorants, drying and heat retention. Patent Application NL 8900473 (Hesco Fashion Netherlands) describes the manufacture of viscose rayon-polyester coated with a mixture of a nonionic fatty acid condensate softener and a blocking agent and acid silica dispersion (non-blocking movement of the warp and weft - friction enhancer). The ratio of softener to silica is 1: 1 and the applied level is 1% silica and 1% softener.

Despite all this effort, no known product satisfies the consumer's need for effective fold resistance to a composition, which can simply be distributed in the main wash while the fabrics maintain good feel, softness and comfort in use. Such a composition should not have adverse effects on the user due to the reactive nature of the chemistry involved. In addition, it is particularly desirable for a product to provide fold resistance in use after the first wash cycle in which it is used.

Similar difficulties with regard to softness distribution in the main wash are known. Attempts have been made to dispense softeners from the main wash, but these have generally delivered a reduced level of softness due to the cleaning effects of the present surfactants or other interactions between the surfactants and the softeners.

Brief Description of the Invention It has been found that a combination of relatively small positively charged particles and a specific class of lubricant droplets can confer benefits of 'in use' creases and folds distributed by the main wash. Such compositions may also confer a softness benefit. This enables the formulation of the main wash product which confers a so-called 'two in one' benefit and avoids the need for the use of a separate composition added in the rinse or used in an after wash treatment such as during ironing. The composition avoids the use of reactive chemical species. The present invention provides an aqueous textile treatment liquid suitable for use in a household washing process which comprises: a) 0.1-10 g / l of a detergent surfactant, b) 0.001-1 g / l of a detergent positively charged particulate material having a particle size of 5 - 200 nm, and c) 0.001 - 1 g / l of an emulsified water dispersible silicone mixture comprising silicone and at least one amino silicone, wherein the weight ratio between silicone and amino silicone is in the range of from 20: 1 to 3: 1 and said silicone mixture has a droplet size of 5 - 20 microns.

Although it is not intended to limit the invention by reference to any theory of operation, it is believed that the particulate material associates with the textile yarn / fibers in order to harden the yarn / fibers and thus resist the formation of folds. At the same time, the silicone blend lubricates the yarn / fibers to aid in the recovery of creases and creases while also ensuring a uniform feel throughout the textile. The particle / silicone mixture also gives softness. In a particularly preferred embodiment of the invention, this is a "non-greasy" softness that does not have an 'oily' feel, and is described by volunteers as a 'dry' softness.

Detergent surfactants are present in the composition to aid in cleaning. Typically, the detergent surfactant will comprise anionic surfactants, nonionic surfactants, or a mixture thereof. In the case of the present invention, the anti-crease effect and the softening effect are not surprisingly offset by the presence of the surfactant. Body builders may also be present as well as the other components generally present in wash compositions.

A further aspect of the invention comprises a concentrate for dilution to form a liquid according to the present invention, wherein said concentrate comprises more than 10% by weight of surfactant. This concentrate may be in solid or liquid form and is suitable for addition to water to form the liquid.

Still another aspect of the invention is the use of the liquid according to the present invention in the washing step of a garment washing process.

Detailed Description of the Invention The invention is described below with particular reference to the various preferred features of the compositions and methods incorporating them. Preferably, the method of the invention is applied to textiles comprising cellulosic fibers, more preferably textiles comprising at least a proportion of cotton fibers, for example cotton alone or cotton blends (i.e., cotton / polyester blends). ). Surfactant Detergent: The purpose of detergent surfactant is for cleaning. Many suitable detergent active compounds are available to the skilled artisan and are fully described in the literature, for example, in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch (published by Wiley Interscience). ).

Preferred surfactants that may be used are soaps, and more preferably anionic and nonionic compounds other than synthetic soaps which are known and used in formulating detergent compositions suitable for use in laundry.

Anionic surfactants are well known to those skilled in the art. Examples include alkyl benzene sulfonates, in particular linear alkyl benzene sulfonates having a C8 -C5 alkyl chain length; primary and secondary alkyl sulfates, in particular C 8 -C 15 primary alkyl sulfates; alkyl ether sulfates; olefin sulfonates; alkyl xylene sulfonates; dialkyl sulfosuccinates; and the fatty acid ester sulfonates. In general sodium salts are preferred.

Nonionic surfactants that may be used include primary and secondary alcohol ethoxylates, in particular ethoxylated C8 -C20 aliphatic alcohols with an average of 1 to 20 moles of ethylene oxide per mole of alcohol, and more especially primary aliphatic alcohols. and C10 - C15 ethoxylated by-products with an average of 1 to 10 mmol of ethylene oxide per mole of alcohol. Non-ethoxylated nonionic surfactants include alkyl polyglycosides, glycerol monoethers and polyhydroxy amides (glucamide).

Cationic surfactants which may be used include quaternary ammonium salts of the general formula R1R2R3R4N + X "wherein R groups are independently C1 -C22 length hydrocarbyl chains, typically alkyl, hydroxy alkyl or ethoxylated alkyl groups, and X is a cation solubilising agents (for example, compounds in which R1 is a C8 -C22 alkyl group, preferably a Cs-C10 or C1 -C4 alkyl group, R2 is a methyl group, and R3 and R4, which may be the same or different, (methyl or hydroxyethyl groups), and cationic esters (eg choline esters) and pyridinium salts Since the present invention does not comprise a conditioner for rinsing, the levels and types of cationic surfactants in contrast of the other surfactants will be used which are detergents, i.e. adapted for cleaning rather than conditioning.The total amount of detergent surfactant in the concentrate is suitably from 10 to 60% and m weight, for example, from 10 to 55% by weight, such as from 10 to 50% by weight. Higher surfactant levels are preferred for reasons of economy of transport and to reduce the packaging levels employed.

Preferably, the amount of anionic surfactant (when present) is in the range of 1 to 50% by weight of the total concentrate. More preferably, the amount of anionic surfactant is in the range of from 3 to 35 wt%, for example from 5 to 30 wt%.

Preferably, the amount of nonionic surfactant, when present, is in the range of 2 to 25 wt%, again expressed in terms of the concentrate, more preferably 5 to 20 wt%.

Amphoteric surfactants may also be used, for example amine oxides or betaines. Particulate Material: As noted above, it is believed that particulate material acts in part to harden textile fibers. Some evidence suggests why in the case of cotton this is effected by the adsorption and coating of the cotton fibers. Depending on the size of the particulate material, some of them may also enter the pores of cotton fibers. These pores have a diameter of about 9 nm. Therefore, at the lower end of the particle size range (5 nm) there will be some particle entry into the pores. The fact that particles are positively charged helps in the interaction of particles with cotton since cotton tends to contain a slightly negative charge.

It is believed that there is an interaction between the particles and silicon droplets in the liquid and that this interaction is important for the final deposition morphology of the tissue components and for the tactile attributes of the treated tissues.

It is also believed that during drying the particles improve the extent and uniformity of silicone spreading, resulting in better and more uniform lubrication. This leads to a feeling of uniform softness throughout the cloth. Drops of the silicone mixture without the particles are less substantive to the fiber, and during drying a droplet coalescence can occur which results in poor distribution across the cloth, resulting in a 'greasy' patch-like softness.

A particularly preferred particulate material (b) is colloidal silica. Ludox Sp532-10519, a 50 nm polydisperse cationic silica (ex Grace Davison) is a particularly suitable material.

Silicones: A mixture containing amino silicon (c) is characterized by its composition and particle size range. The droplet size range of the amino silicon-containing mixture is preferably 5 to 15 microns. This size range is believed to provide an excellent combination of deposition and dispersion in the substrate.

Suitable amino functional silicones for use in the mixture are those having a molar percentage of amino functionality in the range 0.5 - 2.5, for example 'Dow Corning 2-8566' (DC8566), commercially available from Dow. Corning as a thermal hair protection agent, as well as CC Q2-8220, commercially available from Dow Corning as a conditioning additive. The amino silicone containing mixture comprises silicone and amino silicone. Silicone is present at a higher weight than amino silicone. The weight ratio of silicone to amino silicone is in the range of from 20: 1 to 3: 1. At low relative levels of amino silicone, silicone deposition is poor and not uniform. At low relative levels of silicone the sensation becomes greasy and weak.

Weight ratios of about 9: 1, preferably 12: 1 to 6: 1 (silicone / amino silicone) are more particularly preferred. This relationship provides an excellent combination of deposition and tactile feel. It is preferable that the silicone component of the silicone mixture be viscous. More preferably, the silicone should be significantly more viscous than the amino silicone at a given shear rate and temperature. This is believed to influence the visco-elastic properties of the fibers after treatment. However, silicone should not be so viscous as to be a rubber. Accordingly, it is preferable that the viscosity of the silicone be less than 800,000 mPas.

Preferably, the viscosity of the silicone in the silicone mixture is 100,000 - 600,000 mPas at a temperature of 25 ° C. Suitable materials include Dow Corning 200 (R) 300,000 CST, commercially available from Dow Corning.

Preferably the viscosity of the amino silicone in the silicone mixture is less than 5,000 mPas at a temperature of 25 ° C. Suitable materials include DCQ8220, DC8566 ex Dow Corning, as discussed above. The emulsified amino silicon-containing mixture is preferably present at a higher weight than the particles. If an insufficient proportion of the amino silicon-containing mixture is used, the textiles become rigid. The preferred weight ratio of particulate material (b) to emulsified mixture (c) is in the range of 1:10 - 50. Ratios of about 1:30 are particularly preferred. At effective levels the particles are believed to associate with the surface of the emulsified mixture and form a monolayer which aids in emulsion deposition and stability.

Preparation: The compositions of the present invention are preferably prepared by separately preparing an emulsion of the silicone components, and then this is combined with the particulate components. This premix is then combined with the remaining components of the fully formulated product. It is convenient to use an emulsifier to stabilize the emulsion of silicone components. Suitable emulsifiers include nonionic surfactants, in particular non-ionic ethoxylated surfactants. Suitable materials include 3 wt% nonionic surfactants (Brij 30/35) in the emulsion and 3 wt% Pluronic 127 in the emulsion.

A silicone and amino silicone emulsion suitable for use in the present invention is available from Dow Corning under serial number DC 18371-140.

Product Form: Fully formulated products according to the present invention may take the form of liquids and solids and the range of intermediates pastes and gels. These may be in unit dose form or dosed as required. Solids may be in the form of tablets or various particle shapes and sizes up to pellets and granules to powders. Fully formulated products may be homogeneous in composition, or components may be secreted to prevent unwanted interactions on storage or use. In order that the present invention may be more and better understood, it is hereinafter described with reference to various specific embodiments by way of example. Such embodiments are not considered to be limiting, although they also illustrate preferred and particular features of the invention.

Examples The following paragraphs describe the preparation of materials used in the examples. a) Silicone Blend: A silicone blend emulsion was obtained from Dow Corning as a sample identified by code number DC 18371-140.

DC 18371-140 is believed to be a linear PDMS blend with a viscosity of 200,000 / 300,000 mPaS (Dow Corning DC200 (R) FLUID 300,000 CST) and a silicon amine (Dow Corning DCQ-8220). mPaS (25 ° C) at a 9: 1 wt / wt ratio: stabilized with 3 wt% of the Brij 30/35 non-tonic surfactant (ex ICI) plus 3 wt% Pluronic 127 (ex BASF). The average droplet size was 10 pm and the viscosity of the mixture was 240,000 mPaS at 25 ° C. b) Preparation of Silica Mix: A silicone blend emulsion as described above was mixed with Ludox Sp532-10519 silica particles (polydisperse cationic silica, particle size - 50 nm ex Grace Davison). No special mixing conditions are required, except for stirring at room temperature (at high temperature, silica could turn to gel within the silicone mixture). The ratios used are given in the following examples, and the typical batch size for experimental purposes was about 100 ml. C) Preparation of Washing Liquid: The silica / silicone mixture (b) was added by stirring in a base formulation ('BASE') comprising a detergent composition consisting of a mixture of surfactants LAS (BDA-2), SLES 3EO (BSS-T) and Neodol ™ 25-7 at a ratio of 1: 1: 1 and demineralized water (hardness = 0.5 ppm as CaCOs) The final surfactant dosage per wash was 1 g / l and pH was 8 If necessary, the pH was adjusted with borax (STB).

Example 1: Washing Experiments (Soft Panel Test) In a model wash (Linitest ™), towel wipes (tissue weight 14 g) were washed in the 'BASE' solution described above at a weight ratio of 1: 8 between the cloth and the liquid.

Two summed levels of silica / silica mixture in tissue weight (owf) were used: 0.2% owf, and 0.4% deowf. The samples were washed at 40 ° C for 45 minutes and then rinsed twice (ten minutes for each rinse) with demineralized water. As a reference, terry towels were washed in the silicone mixture only (0.2% owf) in the presence of the detergent base and in the presence of the base only.

After washing and drying, the cloths were conditioned at 65% relative humidity and 20 ° C for 24 hours and evaluated for their softness properties by testing with inexperienced tasters and trained tasters.

The results shown in Table 1 were obtained at the 0.2% owf addition level with trained tasters. The same trends were obtained in experiments with 0.4% owf.

Tests with inexperienced tasters and trained tasters showed the following. A terry towel softness benefit to both applied ratios of the silica / silica mixing system (1A - 30: 1 and 1B -1: 2) to the base wash only (see the first comparative example). This is reflected in the higher scores for softness. Reduced stiffness and grease in the silicone / silica mixture for both ratios compared to the softness distributed by the silicone mixture only (see second comparative example). This is reflected in the lower counts.

Fabric folding properties were evaluated on cotton sheets and poplin monitors by employing two techniques: the crease recovery angle (CRA) and the crease recovery test (WRT).

Example 2: Washing Experiments (Crease Recovery Angle): Braided cotton sheet fabrics (tissue weight 2.7 g) were washed according to the protocol described in example 1. The antiformation effect of the crease system Silica / silica mixture at varying ratios: (30/1, 3/1, 1/2) and the silicone mixture was only evaluated at the 0.2% addition level of owf.

After being washed and dried in-line, the cloths were ironed, conditioned at 65% relative humidity and 20 ° C for 24 hours, and their crease recovery angle (CRA) was measured. This is done according to AATCC 6E-1990 by: a) creasing a 5 cm by 2.5 cm cloth for one minute under a 1 kg load, b) releasing the cloth until the creases become unfolded, and c) measuring the crease recovery angle one minute after the creased cloth is released.

Compared to the pads treated only at the base, the silicone blend alone gave a crease effect of less than 15%, ie an increase of less than 15% in CRA was obtained.

The examples of the present invention using the silica / silica mixture (1: 2 and 3: 1) provided a 25% improvement in CRA compared to base treated wads only. The silica / silica mixture at a ratio of 30: 1 provided a 35% improvement compared to the base pads only.

Example 3: - Upholstery Experiments (Pleat Recovery Test): In this example a pleat recovery test (WRT) was used to compare a range of technologies believed to provide greater pleat recovery. A Werner Matis AG upholstery was used to remove excess liquid from the monitors by compressing between two rubber rollers. The pressure applied to the fabric has been selected by the user.

This method was used to apply a known amount of chemical treatment to the cloths. The test solutions were prepared (intensity = the desired% owf) and stabilized overnight on a roller bank. The general principle is that the fabric is soaked in a liquid of the known composition and then compressed between the upholstery rollers so that it retains twice its original weight in liquid - the so-called "100% uptake". Therefore, it is possible to calculate the amount of composition in the tissue from the intensity of the starting liquid.

Each test monitor was weighed (W1) and then soaked in the test solution. The monitor was then compressed between the Werner Matis AG upholstery rollers to the weight = (W1 x 2). The upholstered monitor was then placed to dry at a controlled temperature and relative humidity (20 ° C / 65% RH) for 24 hours, and then weighed again (W2). (W2 - W1) = weight of the additive in the fabric from which the% owf was then calculated.

All treatments were upholstered in a 0.5% owf resin-free cotton poplin. The treated fabrics were previously conditioned to 85% RH before creasing when being wrapped and sealed in polyethylene bags in an environmental chamber). Crease recovery could occur at 65% RH. The monitors were creased on a model 155 Pleated Recovery Tester (supplied by James H Heal & Co Ltd) so that the warp direction was vertical. The tissue was then compressed (wrinkled) without using any additional weight for eight minutes. The monitors formed images after ten minutes and a 24-hour recovery. A strip (the 'U' strip) that covers a broad spectrum of folds (0 = non-wrinkled - flat and 10 = fairly wrinkled) was used to discriminate the folds. Compared with the AATCC128 range, which shows a fairly smooth insensitive region around a count of 3, the new U range allows the discrimination between the intensity of fold formation around this region. Table 2 shows the fold counts obtained. From the results given in table 2, it can be seen that the silica / silica mixing system resulted in lower fold counts than the other approaches listed. Silica / silica mixing technology exhibited the best anti-forming fold count after ten minutes and 24 hours of recovery.

Example 4: Tissue Cloths: Damage of blue cotton (ex Abakhan, Mostyn) upholstered with 0.2% owf silica / silica blend system (30: 1) was assessed by SEM analysis of the tissue surface. and measuring the fabric-to-fabric friction coefficient when using the Eldredge ™ Tribometer. This was compared to damage to untreated cotton after 100 cycles. The surface friction measured under wet conditions (washer fluid, pH 10) for cotton treated with the silica / silica blend system is significantly lower than the untreated cloth friction under all the friction conditions mentioned above. The following results were obtained.

SEM images showed less surface damage in the silica / silica treated tissues compared to the untreated tissues.

Example 5: Microscopic Studies; Optical mapping, SEM and SEM-Si using an electron probe microanalyzer (ΕΡΜΑ) was performed on cotton fibers treated with silica / silicone blend only. When the blend is used alone, there is uneven deposition on the cotton fibers. In the presence of silica, the deposition is much more uniform.

Example 6: - Single Fiber Stress / Stress Measurements: Dia-stron ™ Stress Stress Relaxation and Stress Tests were used to measure the effect of the silica / silicone blend system on a single cotton fiber. Silica / silicone blend treatment showed a measurable stiffening effect on the fiber.

Example 7: - Skin / Tissue Interactions: Blood flow and skin itch responses to histamine stimulation were both measured for cotton sheet tissues treated with the silica / silica mixing system. The silica / silica mixing system exhibits a low blood flow response to tissue evoked abrasion, and no weld / itch response to histamine stimulus.

Claims (8)

1. WASTE TEXTILE TREATMENT LIQUID, suitable for use in a household washing process, characterized in that it comprises: a) 0.1-10 g / l of a detergent surfactant, b) 0.001-1 g / l of a positively charged particulate material having a particle size of 5 - 200 nm, and c) 0.001 - 1 g / l of an emulsified water dispersible silicone mixture comprising the silicone and at least one amino silicone, wherein the ratio in The weight between silicone and amino silicone is in the range of 20: 1 to 3: 1 and said silicone mixture has a droplet size of 5 - 20 microns. LIQUID according to claim 1, characterized in that the particulate material (b) is a colloidal silica. Liquid according to Claim 1, characterized in that the weight ratio of particulate material (b) to emulsified mixture (c) is in the range 1:10 - 50. LIQUID according to claim 2, characterized in that the viscosity of the silicone in the silicone mixture is 100,000 - 600,000 mPas. Liquid according to Claim 2, characterized in that the viscosity of the amino silicone in the silicone mixture is 1,000 - 5,000 mPas. Liquid according to Claim 1, characterized in that the surfactant comprises an anionic surfactant. Concentrate for dilution to form a liquid as described in one of claims 1 to 6, characterized in that said concentrate comprises more than 10% by weight of surfactant. Use of the liquid as described in one of claims 1 to 6, characterized in that it is in the washing step of a garment washing process.