Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—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
  • C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/825—Mixtures of compounds all of which are non-ionic
  • C11D1/8255—Mixtures of compounds all of which are non-ionic containing a combination of compounds differently alcoxylised or with differently alkylated chains
• • 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
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0036—Soil deposition preventing compositions; Antiredeposition agents
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
• • 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/72—Ethers of polyoxyalkylene glycols
• • C11D2111/12—
• • C11D2111/42—
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
  • D06M2101/02—Natural fibres, other than mineral fibres
  • D06M2101/04—Vegetal fibres
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
  • D06M2101/16—Synthetic fibres, other than mineral fibres
  • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M2101/32—Polyesters
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
  • D06M2200/01—Stain or soil resistance

Definitions

• the present invention relates to a process for treatment of a fabric. It further relates to a composition and a kit for treatment of a fabric.
• fabric cleaning compositions comprising surfactant and polymer are known, which are typically contacted with fabric followed by rinsing of fabric in water.
• conventional cleaning processes and compositions do not provide benefit of reduction in subsequent soiling of fabric.
• Rinse conditioners that are used at the stage of rinsing of fabrics comprise cationic surfactant and do not provide benefit of reduction in subsequent soiling of fabric.
• US-5,004,557 relates to a clear or translucent liquid detergent composition that is pourable at room temperature and provides soil anti-redeposition, improved cleaning performance, and viscosity control, comprises 1 to 60% of at least one surfactant, up to 20% of a water-soluble sequester builder, 0.1 to 2% of an active agent selected from homopolymers and copolymers of acrylic acid, and enough water and other additives to make 100% of said composition.
• a clear or translucent liquid detergent composition that is pourable at room temperature and provides soil anti-redeposition, improved cleaning performance, and viscosity control, comprises 1 to 60% of at least one surfactant, up to 20% of a water-soluble sequester builder, 0.1 to 2% of an active agent selected from homopolymers and copolymers of acrylic acid, and enough water and other additives to make 100% of said composition.
• an active agent selected from homopolymers and copolymers of acrylic acid
• one of the objects of the present invention is to provide a process for reducing soiling of fabrics that can be easily used in the household.
• Yet another object of the present invention is to provide a process for treatment of a fabric that improves efficacy of subsequent cleaning.
• Yet another object of the present invention is to provide a process for treatment of a fabric which is effective on various types of fabrics such as cotton, polyester and polycotton.
• the present inventors have surprisingly found that contacting a fabric in an aqueous medium with a cross-linked polycarboxylic acid and a surfactant provides benefits such as reduction in soiling, ease of subsequent cleaning whilst being relatively easy to practice in household.
• the fabric that can be treated includes synthetic as well as natural textiles. Fabrics may be made of cotton, polycotton, polyester, silk or nylon. It is envisaged that the method of the present invention can be used to treat garments and other clothing and apparel materials that form typical washload in household laundry.
• the household materials that can be treated according to the process of the present invention include, but are not limited to, bedspreads, blankets, carpets, curtains and upholstery.
• the process of the present invention is described primarily for treatment of a fabric, it is envisaged that the process of the present invention can be advantageously used to treat other materials such as jute, leather, denim and canvass. It is envisaged that the process of the present invention can be used to treat articles such as shoes, rainwear and jackets.
• Cross-linked polycarboxylic polymer The fabric is treated with a cross-linked polycarboxylic polymer and a surfactant in an aqueous medium having pH less than 5.
• the polycarboxylic polymer should be one that is interpolymerized with a multi-vinyl or multi-allylic functionalized cross-linking agent.
• the polycarboxylic polymer is interpolymerized with a polyalkenyl polyether of a polyhydric compound.
• the polyhydric compound should have at least 4 carbons and 3 hydroxy groups.
• the polymer is a water dispersible copolymer of an alpha-beta monoolefinically unsaturated lower aliphatic carboxylic acid cross-linked with a polyether of a polyol.
• the polyol may be selected from the group consisting of oligosaccharides, reduced derivatives thereof in which the carbonyl group is converted to an alcohol group, and pentaerythritol .
• the hydroxy groups of said polyol are etherified with allyl groups, said polyol having at least two allyl groups per polyol molecule.
• a suitable copolymer is one of acrylic acid with low percentages (0.71 to 1.5%) of poly ally sucrose.
• Molecular weights of the cross-linked polymer may range from about 500,000 up to 10,000,000 preferably between 500,000, and 2,000,000, optimally about 1,250,000.
• Examples of commercially available cross-linked polymers based upon allyl sucrose modified polyacrylic acid are the Carbopol® resins manufactured by the B. F. Goodrich Chemical Company. These materials include Carbopol 941® (molecular weight 1,250,000), Carbopol 934® (molecular weight 3,000,000) and Carbopol 940® (molecular weight 4,000,000) . Most preferred is Carbopol 980®.
• the amount of cross-linked polycarboxylic polymer contacted per cm 2 area of the fabric is preferably from 0.1 to 200 mg, more preferably 1 to 100 mg, and most preferably 1 to 50 mg. It is particularly preferred that the amount of the polymer contacted per cm 2 area of the fabric is from 1 to 15 mg.
• area of fabric refers to surface area of one side of the fabric.
• the fabric is treated with a cross-linked polycarboxylic polymer and a surfactant in an aqueous medium having pH less than 5.
• a surfactant in an aqueous medium having pH less than 5.
• Any anionic, nonionic, zwitterionic or amphoteric surfactant or mixtures thereof can be used according to the present invention.
• Examples of anionic, nonionic, zwitterionic or amphoteric surfactants that can be used according to the present invention are given in ⁇ Surfactants and Interfacial Phenomena' by Milton J. Rosen, (Second edition, John Wiley & Sons, 1989), which is incorporated herein by reference.
• the surfactant is preferably anionic, nonionic or mixture thereof.
• Nonionic surfactant is particularly preferred.
• the nonionic surfactant is preferably an alcohol ethoxylate having from 1 to 30 ethylene oxide groups. More preferably, the nonionic surfactant is a mixture of two alcohol ethoxylates, one having from 1 to 5 ethylene oxide groups and the other having from 6 to 10 ethylene oxide groups.
• Present inventors have determined that cationic surfactant, if used in the process of fabric treatment, leaves fabric more prone to subsequent soiling. Therefore, cationic surfactant, if present, should not be greater than preferably 100 ppm, more preferably 50 ppm, and most preferably 25 ppm of the aqueous medium. It is particularly preferred that the fabric is not contacted with cationic surfactant during the process of the present invention .
• the amount of surfactant contacted per cm 2 area of the fabric is preferably from 0.1 to 200 mg, more preferably 1 to 100 mg, and most preferably 1 to 50 mg. It is particularly preferred that the amount of surfactant contacted per cm 2 area of the fabric is from 1 to 15 mg.
• the fabric is contacted with the cross-linked polycarboxylic acid and the surfactant in presence of an aqueous medium having pH less than 5, more preferably less than 4, and most preferably less than 3.5. It is preferred that the pH of the aqueous medium is at least 1. If required, pH of the aqueous medium can be adjusted by adding acidic or alkaline agents, and/or buffering media. In particular, pH may be adjusted by adding acidic agents.
• the aqueous medium may comprise either the cross-linked polycarboxylic acid, or the surfactant, or preferably both the cross-linked polycarboxylic acid and the surfactant.
• the cross-linked polycarboxylic acid, or the surfactant or both may be added to the aqueous medium during the process of the present invention.
• the cross-linked polycarboxylic acid when mixed with the aqueous medium, is from 0.005 to 10%, more preferably from 0.05 to 5%, and most preferably from 0.05 to 2% by weight of the aqueous medium.
• the surfactant when mixed with the aqueous medium, is from 0.005 to 10%, more preferably from 0.01 to 5%, and most preferably from 0.01 to 2% by weight of the aqueous medium.
• the aqueous medium preferably comprises a benefit agent.
• the benefit agent that can be included in the aqueous medium includes, but is not limited to ingredients such as perfume, fluorescer, deodorant, antibacterial agent, shading dye and bluing agent.
• One of the advantages of the present invention is that the deposition of benefit agent is enhanced.
• the aqueous medium may also contain detergent ingredients like builders, oxidative or reductive bleaches and bleach promoters.
• the mass ratio of aqueous medium to fabric, or liquor to cloth ratio is preferably from 2 to 150, more preferably from about 5 to 100 and most preferably from 5 to 25.
• the step (a) of contacting the fabric with the crosslinked polycarboxylic polymer and the surfactant in presence of an aqueous medium having pH less than 5 can be carried out in any suitable manner.
• the fabric is contacted with the crosslinked polycarboxylic polymer and the surfactant sequentially in any order, or simultaneously. Accordingly the fabric may be contacted with the surfactant, followed by contacting with the polymer. Alternatively the fabric may be contacted with the polymer, followed by contacting with the surfactant. However, it is preferred that the fabric is simultaneously contacted with both the polymer and the surfactant in presence of an aqueous medium having pH less than 5. In case of the sequential contacting, it is preferred that both the surfactant and the crosslinked polycarboxylic polymer are individually mixed with the aqueous medium prior to contacting with the fabric. In case of the simultaneous contacting, it is preferred that both the surfactant and the crosslinked polycarboxylic polymer are mixed with the aqueous medium prior to contacting with the fabric.
• the crosslinked polycarboxylic polymer or the surfactant or both are mixed with the aqueous medium prior to contacting with the fabric.
• the fabric may be dipped into the aqueous medium comprising the polymer and/or the surfactant.
• the aqueous medium comprising the polymer and/or the surfactant may be sprayed on the fabric.
• the fabric is dried.
• the step (a) involves immersion of fabric in the aqueous medium comprising the surfactant and the polymer, the fabric is removed from the aqueous medium before drying.
• the fabric may be subjected to wringing to remove part of the aqueous medium so that drying is faster .
• Fabric may be dried by spreading the fabric on clothe line.
• Treated garments may be worn by user before subsequent washes. It is envisaged that the treated fabric will be less prone to subsequent soiling during use.
• the process comprises a further step of washing the treated fabric with a cleaning medium comprising water and having pH preferably greater than 5, more preferably greater than 7, and most preferably greater than 8.
• the pH of cleaning medium is preferably from 5 to 14, more preferably from 7 to 12 and most preferably from 8 to 11.
• the cleaning medium comprises water.
• the cleaning medium further comprises an alkaline substance capable of raising the pH of the cleaning medium preferably above 8, more preferably above 9, and most preferably above 10.
• the cleaning medium preferably comprises hydroxide, carbonate, bicarbonate, phosphate, silicate or aluminate of an alkali metal or ammonium. It is particularly preferred that cleaning medium further comprises a surfactant.
• the cleaning medium may further comprise a builder.
• composition for treatment of a fabric comprising a cross- linked polycarboxylic acid and a surfactant.
• the composition comprises preferably 0.1 to 99%, more preferably 10-90% and most preferably 20-80% by weight a crosslinked polycarboxylic polymer.
• the composition comprises preferably 0.1 to 99%, more preferably 10-90% and most preferably 20-80% by weight surfactant .
• the composition when added to water has pH less than 5, more preferably less than 4, and most preferably less than 3.5.
• the composition may further comprise an acidic agent.
• the acidic agent is preferably from 0.1 to 10% of the composition.
• Kit for treatment of a fabric According to another aspect of the present invention, there is provided a kit for treatment of a fabric comprising
• the kit may comprise a fabric treatment composition as described earlier.
• Fabrics were desized by soaking them overnight in a 3:1 mixture of chloroform and methanol, followed by two hot water washes in 3 g/L of commercially available detergent powder SURF EXCEL® in a washing machine maintaining liquor to cloth ratio of about 20.
• Composite soil was prepared by mixing 5OmL of Triolein and 4 mg each of C-soot and Fe3 ⁇ 4. It was then sonicated in an ultrasonic bath for two and a half hours.
• Carbon soot Dried fabric was soiled by dipping a fabric swatch in 3 mL carbon soot dispersion (150 ppm) in water in a petri- dish. The dispersion was stabilized by addition of sodium alkylbenzene sulfonate (50 ppm) . The fabric was then removed, dried and its reflectance was measured. Reflectance of fabric after soiling with carbon soot soil was used as a measure of stain-resistance of fabric, with lower value of AS (after soiling) reflectance indicating less stain-resistance
• Dried fabric was loaded with different types of soil like carbon soot and composite soil. The fabric was then redried. The redried fabric was cleaned in a tergotometer with a cleaning medium. Fabrics were soaked in cleaning medium for 30 min maintaining liquor to cloth ratio of about 50. After soaking, the fabrics were washed in a tergotometer operating at rpm of about 90, for 15 minutes followed by 3 rinses of 2 minutes each.
• the cleaning medium further comprised sodium carbonate (0.05% by weight), sodium tripolyphosphate (0.05 % by weight), sodium silicate or commercially available detergent (SURF EXCEL® 0.3% by weight) . Higher values of reflectance are indicative of better cleaning.
• Reflectometer- Gretag Macbeth Colour Eye 7000A was used for measurement of reflectance. Initial reflectance of fabric before treatment was measured. Reflectance was also measured after soiling (AS) and after washing the soiled fabric (AW) .
• pH of the aqueous medium was measured and found to be about 4 .In some experiments, pH was changed to values of 8 and 10 by adding sodium hydroxide dropwise. In one of the experiment, pH was lowered by adding citric acid dropwise till pH reached value of 3. There was no step of rinsing after the step (a) unless mentioned otherwise.
• the fabrics were then air dried (step (b) ) . The dried fabrics were then soiled with composite soil according to the soiling protocol given earlier. After soiling, the fabrics were washed with cleaning medium comprising water. Following table gives experimental details and reflectance values measured after soiling (AS) and after wash (AW) . Measured values of reflectance are average value for 5 repetitions unless mentioned otherwise. Table 2: Details of Example 1 and Comparative Examples 1-A to 1-D
• Example 1 wherein the aqueous medium comprises both the polymer and the surfactant and has pH of less than 5 and wherein there is no step of rinsing after treating the fabric results into better cleaning as indicated by higher AW reflectance as compared to processes of Comparative Examples 1-A through to 1-D that are outside the scope of the present invention.
• Example 2 Following experiments were carried out in a manner similar to that of Example 1 except that a mixture of non-ionic surfactants at 0.2 g/L was present in the aqueous medium.
• Comparative examples 2-D and 2-E were carried out wherein the aqueous medium comprised 0.1 g/L of un-crosslinked polyacrylic acid (PAA) of molecular weight 2000 and 450,000, respectively, instead of CARBOPOL® 980.
• PAA un-crosslinked polyacrylic acid
• Table 3 Details of Examples 2-5 and Comparative Examples 2-A to 2-E
• non-ionic surfactants provides better cleaning as compared to a single non-ionic surfactant. It is also seen that polycarboxylic acid polymer without cross- linking does not provide effective cleaning. It can be also seen that the process involving step of treating fabric sequentially with polymer and surfactant in any order provides good cleaning although the results with simultaneous treatment are better.
• Example 6 0.1 g/L of carbopol (Example 6) was subjected to soiling by carbon soot according to the protocol described earlier.
• the aqueous medium had 0.2 g/L cetyl trimethyl ammonium bromide instead of EO3 and EO7.
• the treated fabric was subjected to a step of rinsing with water before subjecting to soiling by carbon soot. All the treated fabrics were dried after soiling and cleaned with water. Reflectance was measured after soiling (AS) and after wash (AW) . The results are tabulated below.
• Example 14-A shows that cleaning medium with pH 5 does not result in effective cleaning, and that the fabric treatment composition, when used for cleaning rather than treating fabric, is not effective.
• Examples 11-14 show that the cleaning efficacy improves with increase in pH. Cleaning in hard water
• the reflectance after washing does not deteriorate strongly when hard water is used, unlike conventional detergent compositions where the performance deteriorates severely with hardness of water.
• washing the same fabric monitors in 3 g/L SURF EXCEL®, a commercially available surfactant, AW reflectance drops to 58 at 48 FH from about 65 at 0 FH, a drop of 7 reflectance units.
• the performance in 48 FH drops by only 3 reflectance units (from 65 to 62) .
• the process of the present invention is capable of meeting the object of providing a process for treatment of fabric that reduces soiling of fabrics, improves efficacy of subsequent cleaning, and is effective on various types of fabrics including cotton, polycotton and polyester.

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Citations (5)

• 2009
  • 2009-06-03 WO PCT/EP2009/056777 patent/WO2009150079A1/en active Application Filing
  • 2009-06-03 CN CN2009801217747A patent/CN102057029A/zh active Pending
  • 2009-06-03 MX MX2010012824A patent/MX2010012824A/es unknown
  • 2009-06-03 BR BRPI0907667A patent/BRPI0907667A2/pt not_active IP Right Cessation
  • 2009-06-03 EP EP09761642A patent/EP2283107A1/en not_active Withdrawn
  • 2009-06-03 EA EA201001880A patent/EA201001880A1/ru unknown
• 2010
  • 2010-12-10 CL CL2010001396A patent/CL2010001396A1/es unknown

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