WO2011151170A1 - Composition détergente pour le linge - Google Patents

Composition détergente pour le linge Download PDF

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Publication number
WO2011151170A1
WO2011151170A1 PCT/EP2011/057935 EP2011057935W WO2011151170A1 WO 2011151170 A1 WO2011151170 A1 WO 2011151170A1 EP 2011057935 W EP2011057935 W EP 2011057935W WO 2011151170 A1 WO2011151170 A1 WO 2011151170A1
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WIPO (PCT)
Prior art keywords
composition according
composition
surfactant
hydroxamate
group
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PCT/EP2011/057935
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English (en)
Inventor
Anthony Mckee
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Unilever Nv
Unilever Plc
Hindustan Unilever Limited
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Application filed by Unilever Nv, Unilever Plc, Hindustan Unilever Limited filed Critical Unilever Nv
Priority to CA2797860A priority Critical patent/CA2797860A1/fr
Priority to BR112012030743A priority patent/BR112012030743A2/pt
Priority to AU2011260477A priority patent/AU2011260477B2/en
Priority to CN201180027452.3A priority patent/CN102918142B/zh
Priority to EP11719834.1A priority patent/EP2576742A1/fr
Publication of WO2011151170A1 publication Critical patent/WO2011151170A1/fr
Priority to ZA2012/08410A priority patent/ZA201208410B/en

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    • 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
    • C11D1/38—Cationic compounds
    • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
    • 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
    • C11D1/86—Mixtures of anionic, cationic, and non-ionic compounds

Definitions

  • the present invention relates to the use of hydroxamic acid and its corresponding salts in laundry detergent compositions with low levels of zeolite and phosphate builder, leading to
  • Improvement of stain removal is one of the constant goals of the detergent industry, as this may lead to savings on the use of chemicals in detergent compositions, or may lead to washing at lower temperatures, and/or for shorter times, and therewith saving energy. Therefore, there is still an interest to improve the detergency effect, especially the primary detergency effect of laundry detergent compositions on textile stains, for example particulate stains, such as stains comprising soils or clay, or plant based stains, such as grass. Especially
  • particulate stains are difficult to remove during the
  • Hydroxamic acids are a class of chemical compounds in which a hydroxylamine is inserted into a carboxylic acid.
  • the general structure of a hydroxamic acid is the following: o Formula 1 in which R 1 is an organic residue, for example alkyl or
  • hydroxamic acid may be present as its corresponding alkali metal salt, or hydroxamate .
  • the hydroxamates may conveniently be formed from the
  • L + is a monovalent cation such as for example the alkali metals (e.g. potassium, sodium), or ammonium or a substituted
  • Hydroxamic acids and hydroxamates are known to be useful as metal chelators. They have also been used in detergent
  • EP 388 389 A2 discloses bleach free under built liquid
  • Hydroxamic acids as in formula 1 are disclosed, wherein R 1 represents an optionally substituted straight- or branched chain C5-C2 1 alkyl or C5-C2 1 alkenyl group or an optionally-substituted phenyl group, and R ' represents hydrogen, or an optionally substituted C 1 -C6 alkyl group, or an optionally-substituted phenyl group.
  • R 1 represents an optionally substituted straight- or branched chain C5-C2 1 alkyl or C5-C2 1 alkenyl group or an optionally-substituted phenyl group
  • R ' represents hydrogen, or an optionally substituted C 1 -C6 alkyl group, or an optionally-substituted phenyl group.
  • One of the examples shows an improved bleaching performance when a
  • hydroxamate is used in a detergent composition in hard water (20° German hardness, which is about 143 milligram calcium per litre) .
  • the examples use C12 linear, C12 branched, C13 branched and Ci 8 hydroxamates in detergent formulations comprising mixtures of anionic surfactant and nonionic surfactant.
  • nonionic surfactant of at least 1.25 to 1
  • in example III there is 100 ⁇ 6 anionic surfactant.
  • the liquids also contain at least 6 wt% ethanol, which assists in solubilising the long chain hydroxamates.
  • EP 384 912 A2 discloses the use of hydroxamic acids and their derivatives as stabilizers for peroxygen bleach compounds in built, mainly granular, detergent compositions. Fully
  • US 4,863,636 discloses liquid detergent compositions comprising one or more detersive surfactants and one or more of N- hydroxyimide or carboxy hydroxamic acid detergent additives. These compounds serve as active metal ion chelants, leading to improved stain removal.
  • WO 97/48786 discloses a multicomponent system for use with detergent substances, containing an oxidation catalyst, a suitable oxidant, at least one mediator that has been selected from the group of, among others, hydroxamic acids and
  • hydroxamic acid derivatives hydroxamic acid derivatives, a co-mediator, and optionally a low quantity of at least one free amine of each inserted mediator.
  • This system leads to improved bleach function of the detergent, and less consumption of a mediator.
  • GB 1317445 discloses detergent compositions comprising an alkali-metal salt of a hydroxamic acid. The function of this salt is to prevent the corrosion of copper and copper alloys that is utilised in the construction of the washing machines.
  • Copending patent application PCT/EP2009/067193 describes laundry detergent formulations comprising 0.5 to 20% by weight hydroxamic acid or its corresponding hydroxamate having a structure as specified therein. It is also shown in this document that the primary detergent effect, especially on red clay particulate soil, can be improved when applying these laundry detergent formulations for treating soiled fabric.
  • Laundry detergents need to be able to remove everyday dirt and stains that are commonly found in a wash load.
  • One type of clay that is particularly resistant to removal by surfactants alone is red clay, such as red pottery clay or Red Georgia clay. This is a particulate soil stain.
  • the present invention provides a laundry detergent composition
  • a laundry detergent composition comprising a) 0.005 to less than 0.5 wt% hydroxamic acid or its corresponding hydroxamate of the structure:
  • alkyl ether group C3 ⁇ 4 ( CH2 ) n (EO) m wherein n is from 2 to 20 and m is from 1 to 12, or
  • substitution include one or more of -N3 ⁇ 4, -OH,
  • R 2 is selected from hydrogen and a moiety that forms part of a cyclic structure with a branched R 1 group
  • weight ratio a) to b) lies in the range 1: 6 to 1:16000
  • references to a number of carbon atoms include mixed chain length materials provided that some of the hydroxamate material falls within the ranges specified and the ratios and amounts are determined by excluding any material falling outside of the specified range.
  • hydrotrope system comprising propylene glycol and glycerol at levels of at least 6 wt%, more preferably at least 10 wt%.
  • the preferred hydroxamates are those where R 2 is Hydrogen and R is C8 to Ci4 alkyl, preferably normal alkyl, most preferably saturated .
  • the detergent composition is preferably used in aqueous wash liquor, but may comprise one or more solvents suitable for use for domestic laundry purposes.
  • the improved stain removal occurs during the main wash of the laundry process, i.e. preferably the laundry detergent composition in which the hydroxamates are used is a main wash product.
  • the wash liquor is preferably free of formate salts. Furthermore, it is preferably free from bleach, especially peroxygen bleach.
  • the composition may comprise from 1 to 15 wt% soap.
  • the preferred soaps are made from saturated fatty acids.
  • Especially preferred compositions comprise at least 0.5 wt% of soil release polymer. This improves the multiwash performance of the detergent system for the removal of the clay. Inclusion of at least 0.5 wt% anti redeposition polymer is also
  • detergency soil removal meaning that there is an increased level of soil in the wash liquor, which must then be prevented from redeposition onto the same or a different piece of fabric
  • surfactant system for optimum particulate red clay soil removal lies in the range 1:10 to 1:400.
  • An even more preferred range of weight ratios being 1:20 to 1:100.
  • the preferred ratio of anionic to nonionic surfactant for particulate red clay soil removal is at least 1:1, more
  • compositions are particularly suitable for use on
  • particulate stains such as soils and clays, especially red clay, and also surprisingly grass.
  • the invention also extends to the use of 0.005 to less than 0.5 wt% hydroxamic acid or its corresponding hydroxamate of the structure :
  • R is a Ce normal alkyl group, and R is a hydrogen atom, in a laundry detergent composition, for improving the particulate soils stain removal from a textile substrate, wherein the composition further comprises a detersive
  • surfactant system comprising anionic surfactant and nonionic surfactant at a concentration from 3 to 80 wt%; and optionally other ingredients to 100 wt%.
  • the hydroxamate may be incorporated within the laundry
  • detergent compositions in any suitable fashion within the knowledge of a person of ordinary skill in the art.
  • x hydroxamic acid' or x hydroxamate' this encompasses both hydroxamic acid and the corresponding hydroxamate (salt of hydroxamic acid), unless indicated otherwise.
  • x wt%' is to be understood as % by weight of the total composition.
  • the stained fabric is treated with the laundry detergent composition comprising hydroxamate according to the invention and the primary detergency is the measured stain removal by the laundry composition on the stain.
  • This is a separate process to so-called soil release using a polymer, which is treatment of fabric with a polymer (through a wash or other such treatment) , with subsequent staining of the fabric, the soil release polymer having the effect of the easier removal of the stain.
  • textile/fabric substrate such as cotton (woven, knitted & denim) , polyester (woven, knitted & micro fibre) , nylon, silk, polycotton (polyester/cotton blends) , polyester elastane, cotton elastane, viscose rayon, acrylic or wool.
  • Particularly suitable textile/fabric substrates are cotton, polycotton and polyester substrates.
  • Particulate stains are stains comprising for example dirt, soil, clay, mud or soot. They are predominately solid in nature and come into contact with fabrics in the course of their regular use.
  • R 1 is an alkyl ether group C3 ⁇ 4 (C3 ⁇ 4 ) n (EO) m wherein n is from 2 to 20 and m is from 1 to 12 then the alkyl moiety terminates this side group.
  • R 1 is chosen from the group consisting of C 4 , C 5 , e, C 7 , Cs, Cg, Cio, Cii, or Ci2 or Ci 4 normal alkyl group, most preferably R 1 is at least a Cg-i4 normal alkyl group.
  • the Cs material this is called octyl hydroxamic acid.
  • the potassium salt is particularly useful.
  • hydroxamic acids whilst less preferred, are suitable for use in the present invention.
  • suitable compounds include, but are not limited to, the following compounds :
  • Such hydroxamic acids are commercially available.
  • the hydroxamate acts by binding to metal ions that are present in the soil on the fabric. This binding action, which is, in effect, the known sequestrant property of the hydroxamate is not, in itself, of any use to remove the soil from the fabric.
  • the key is the "tail" of the hydroxamate i.e. the group R 1 minus any branching that folds back onto the amate Nitrogen via group R 2 .
  • the tail is selected to have an affinity for the surfactant system. This means that the soil removal ability of an already optimised surfactant system is further enhanced by the use of the hydroxamate as it, in effect, labels the
  • particulate material as "soil”
  • surfactant system acting on the hydroxamate molecules now fixed to the particulates via their binding to the metal ions embedded in the clay type particulates.
  • the detersive surfactants will adhere to the hydroxamate, leading overall to more surfactants interacting with the fabric, leading to better soil release.
  • hydroxamic acids act as a linker molecule facilitating the removal and
  • detergent compositions may lead to reduced soil release, as the surface charges of the soils are less negative as compared to the higher pH during the conventional well built and buffered laundering processes, achieved with conventional zeolite or phosphate built powder products. This surface charge of the soil may lead to increased repellence of the surfactants by the soil, possibly leading to reduced release of the soil.
  • the hydroxamates are used in liquid detergent compositions, and more preferred the detersive surfactant concentration in said liquid detergent compositions is from 20 to 80 wt%.
  • the hydroxamates have a higher affinity for transition metals, like iron, than for alkaline earth metals like calcium and magnesium, therefore the hydroxamic acid primarily acts to improve the removal of soil on fabric, especially particulate soils, and not additionally as a builder for calcium and magnesium. This selectively is especially beneficial if the laundering composition is underbuilt; especially when it comprises less than 5 wt% zeolite or phosphate builder.
  • the laundry detergent composition in which the hydroxamate is used comprises a detersive surfactant system at a concentration from 3 to 80 wt%.
  • a detersive surfactant system we mean that the surfactants therein provide a detersive, i.e. cleaning effect to textile fabrics treated as part of a laundering process.
  • Other surfactants which are not detersive
  • surfactants can be used as part of the composition.
  • the detersive surfactant is present at a level of from 5 to 60 wt%, more preferably from 10 to 50 wt%. Even more preferably, the detersive surfactant system comprises at least 20, or 30 or even 40 wt% of the composition.
  • any surfactant may be used as detersive
  • surfactants including anionic, nonionic, cationic, and
  • amphoteric or zwitterionic surfactants or combinations of these, provided that there is anionic and nonionic surfactant present in the range of ratios specified above.
  • Cationic surfactant may optionally be present as part of the detersive surfactant.
  • Anionic surfactant may be present at a level of from 0.1 to 50 wt%, preferably from 1 to 40 wt%, more preferably from 1.5 to 25 wt%.
  • Nonionic surfactant may be incorporated at a level of from 0.1 to 50 wt%, preferably from 1 to 40 wt ⁇ 6 , more
  • the ratio of anionic surfactant to nonionic surfactant is from 19:1 to 1:1.1, more preferably from 9:1 to 1:1.
  • nonionic and anionic surfactants of the present invention are nonionic and anionic surfactants of the present invention.
  • surfactant system may be chosen from the surfactants described in x Surface Active Agents' Vol. 1, by Schwartz & Perry,
  • x nonionic surfactant' shall be defined as amphiphilic molecules with a molecular weight of less than about 10,000, unless otherwise noted, which are substantially free of any functional groups that exhibit a net charge at the normal wash pH of 6-11. Any type of nonionic surfactant may be used, although preferred materials are further discussed below.
  • fatty acid alkoxylates especially ethoxylates, having an alkyl chain of from C8-C35, preferably C8-C30, more preferably C 1 0-C24, especially C 10 -C 18 carbon atoms, for example, the Neodol range from Shell (The Hague, The Netherlands) ; ethylene oxide/propylene oxide block polymers which may have molecular weight from 1,000 to 30,000, for example, Pluronic (trademark) from BASF (Ludwigshafen, Germany) ; and alkylphenol ethoxylates, for example Triton X-100, available from Dow Chemical (Midland, Mich. , USA) .
  • nonionic surfactants should also be considered within the scope of this invention. These include condensates of
  • alkanolamines with fatty acids such as cocamide DEA, polyol- fatty acid esters, such as the Span series available from
  • Uniqema (Gouda, The Netherlands) , ethoxylated polyol-fatty acid esters, such as the Tween series available from Uniqema (Gouda, The Netherlands) , alkylpolyglucosides , such as the APG line available from Cognis (Dusseldorf, Germany) and n- alkylpyrrolidones , such as the Surfadone series of products marketed by ISP (Wayne, N.J., USA) . Furthermore, nonionic surfactants not specifically mentioned above, but within the definition, may also be used.
  • the more preferred nonionic surfactants are the fatty acid ethoxylates with an average degree of ethoxylation of 7, alkoxylates with one propylene oxide and multiple ethylene oxide units, seed oil based surfactant, such as Ecosurf SA7 or SA9 available from Dow Chemical, APGs, and branched alcohol Guerbet nonionics.
  • xAnionic surfactants' are defined herein as amphiphilic
  • anionic surfactants are the alkali metal salts of organic sulphur reaction products having in their molecular structure an alkyl radical containing from about 6 to 24 carbon atoms and a radical selected from the group consisting of sulphonic and sulphuric acid ester radicals.
  • anionic surfactant hereinafter described can be used, such as alkyl ether sulphates, soaps, fatty acid ester sulphonates, alkyl benzene sulphonates, sulphosuccinate esters, primary alkyl sulphates, olefin sulphonates, paraffin
  • surfactants are the alkali and alkaline earth metal salts of fatty acid carboxylates , fatty alcohol sulphates, preferably primary alkyl sulfates, more preferably they are ethoxylated, for example alkyl ether sulphates; alkylbenzene sulphonates, alkyl ester fatty acid sulphonates, especially methyl ester fatty acid sulphonates and mixtures thereof.
  • cationic, amphoteric surfactants and/or zwitterionic surfactants may be present in the laundry detergent
  • compositions in which the hydroxamate is used as cosurfactant according to the invention are used as cosurfactant according to the invention.
  • Preferred cationic surfactants are quaternary ammonium salts of the general formula RiR 2 R 3 R 4 + X ⁇ , for example where Ri is a Ci2 _ Ci 4 alkyl group, R2 and R3 are methyl groups, R4 is a
  • the laundry detergent composition in which the hydroxamate is used according to the invention further comprises an amphoteric or zwitterionic surfactant.
  • Amphoteric surfactants are molecules that contain both acidic and basic groups and will exist as zwitterions at the normal wash pH of between 6 and 11.
  • an amphoteric or zwitterionic surfactant is present at a level of from 0.1 to 20% by weight, more preferably from 0.25 to 15% by weight, even more preferably from 0.5 to 10% by weight.
  • Suitable zwitterionic surfactants are exemplified as those which can be broadly described as derivatives of aliphatic quaternary ammonium, sulfonium and phosphonium compounds with one long chain group having about 8 to about 18 carbon atoms and at least one water solubilizing radical selected from the group consisting of sulfate, sulfonate, carboxylate, phosphate or phosphonate.
  • a general formula for these compounds is:
  • Ri contains an alkyl, alkenyl or hydroxyalkyl group with 8 to 18 carbon atoms, from 0 to 10 ethylene-oxy groups or from 0 to 2 glyceryl units;
  • Y is a nitrogen, sulphur or phosphorous atom;
  • R 2 is an alkyl or hydroxyalkyl group with 1 to 3 carbon atoms;
  • x is 1 when Y is a sulphur atom and 2 when Y is a nitrogen or phosphorous atom;
  • R3 is an alkyl or
  • hydroxyalkyl group with 1 to 5 carbon atoms and Z is radical selected from the group consisting of sulfate, sulfonate, carboxylate, phosphate or phosphonate.
  • Preferred amphoteric surfactants are amine oxides, for example coco dimethyl amine oxide.
  • Preferred zwitterionic surfactants are betaines, and especially amidobetaines .
  • Preferred betaines are Cs to Cis alkyl
  • amidoalkyl betaines for example coco amido betaine. These may be included as co-surfactants, preferably present in an amount of from 0 to 10 wt %, more preferably 1 to 5 wt %, based on the weight of the total composition.
  • betaines that may be employed are sulfatobetaines , such as 3- (dodecyldimethylammonium) -1-propane sulfate; and 2- (cocodimethylammonium) -1-ethane sulfate.
  • Sulfobetaines such as: 3- (dodecyldimethyl-ammonium) -2-hydroxy-l-propane sulfonate; 3- ( tetradecyl-dimethylammonium) -1-propane sulfonate; 3- (C 1 2-C14 a1ky1-amidopropyldimethylammonium) -2-hydroxy-l-propane
  • Carboxybetaines such as (dodecyldimethylammonium) acetate (also known as lauryl betaine) ; ( tetradecyldimethylammonium) acetate (also known as myristyl betaine) ;
  • the sulfoniumbetaines such as: (dodecyldimethylsulfonium) acetate; and 3- (cocodimethyl-sulfonium) -1-propane sulfonate.
  • the phosphoniumbetaines such as 4- (trimethylphosphonium) -1- hexadecane sulfonate; 3- (dodecyldimethylphosphonium) -1- propanesulfonate ; and 2- (dodecyldimethylphosphonium) -1-ethane sulfate .
  • the laundry detergent compositions preferably comprise
  • Especially preferred is lauryl betaine.
  • the betaines and hydroxamates may provide even further enhanced particulate soil removal when used together in the compositions according to the invention.
  • the laundry detergent compositions in which the hydroxamate is used preferably comprise low levels of detergency builder, based on the weight of the total composition.
  • the amounts of the inorganic builders zeolite and phosphate are less than 5 wt%. These builders are considered to be harmful to the
  • the builder is selected from the group of alkali and alkaline earth metal carbonates (e.g. sodium carbonate), silicates (e.g. layered silicate), and organic builders such as citrates (e.g. sodium citrate), succinates, sulphamates and malonates, and any combination of these.
  • alkali and alkaline earth metal carbonates e.g. sodium carbonate
  • silicates e.g. layered silicate
  • organic builders such as citrates (e.g. sodium citrate), succinates, sulphamates and malonates, and any combination of these.
  • the organic builders are preferred. They may be used at levels of 1 wt% or more, up to, say, 50 wt%.
  • Organic builders that may be present include polycarboxylate polymers such as polyacrylates and acrylic/maleic copolymers; polyaspartates ; monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates , glycerol mono-di- and
  • Organic builders may be used in minor amounts Especially preferred organic builders are citrates, suitably used in amounts of from 1 to 30 wt%, preferably from 1.5 to 10 wt%; and acrylic polymers, more especially acrylic/maleic copolymers, suitably used in amounts of from 0.5 to 15 wt%, preferably from 1 to 10 wt%.
  • Builders both inorganic and organic, are preferably present in alkali metal salt, especially sodium salt, form.
  • the formulation may include one or more optional ingredients to enhance performance and properties. While it is not necessary for these elements to be present in order to practice this invention, the use of such materials is often very helpful in rendering the formulation acceptable for consumer use.
  • optional components include, but are not limited to: hydrotropes, fluorescent whitening agents, photobleaches , fibre lubricants, reducing agents, enzymes, enzyme stabilising agents (such as borates and polyols) , powder finishing agents, defoamers, bleaches, bleach catalysts, soil release agents, especially soil release polymers for cotton or polyester or both, antiredeposition agents, especially antiredeposition polymers, dye transfer inhibitors, buffers, colorants,
  • fragrances pro-fragrances, rheology modifiers, anti-ashing polymers, preservatives, insect repellents, soil repellents, water-resistance agents, suspending agents, aesthetic agents, structuring agents, sanitisers, solvents, including aqueous and non-aqueous solvents, fabric finishing agents, dye fixatives, wrinkle-reducing agents, fabric conditioning agents and
  • deodorizers may include, but are not limited to, any one or more of the following: soap, peroxyacid and persalt bleaches, bleach activators, sequestrants , cellulose ethers and esters, other antiredeposition agents, sodium sulphate, sodium silicate, sodium chloride, calcium chloride, sodium
  • bicarbonate other inorganic salts, fluorescers, photobleaches , polyvinyl pyrrolidone, other dye transfer inhibiting polymers, foam controllers, foam boosters, acrylic and acrylic/maleic polymers, proteases, lipases, cellulases, amylases, other detergent enzymes, citric acid, soil release polymers, fabric conditioning compounds, coloured speckles, and perfume.
  • the laundry detergent composition may suitably contain a bleach system based on peroxy bleach compounds, for example, inorganic persalts or organic peroxyacids, capable of yielding hydrogen peroxide in aqueous solution.
  • peroxy bleach compounds include organic peroxides such as urea peroxide, and inorganic persalts such as the alkali metal perborates, percarbonates , perphosphates , persilicates and persulphates .
  • inorganic persalts are sodium perborate monohydrate and
  • sodium percarbonate having a protective coating against
  • Sodium percarbonate having a protective coating comprising sodium metaborate and sodium silicate is disclosed in GB 2 123 044B (Kao) .
  • the peroxy bleach compound is suitably present in an amount of from 5 to 35% by weight, preferably from 10 to 25% by weight.
  • the peroxy bleach compound may be used in conjunction with a bleach activator (bleach precursor) to improve bleaching action at low wash temperatures.
  • the bleach precursor is suitably present in an amount of from 1 to 8% by weight, preferably from 2 to 5% by weight.
  • Preferred bleach precursors are peroxycarboxylic acid
  • An especially preferred bleach precursor suitable for use in the present invention is N, , ' , ' -tetracetyl ethylenediamine (TAED) .
  • TAED tetracetyl ethylenediamine
  • peroxybenzoic acid precursors in particular, N, , -trimethylammonium toluoyloxy benzene sulphonate.
  • a bleach stabiliser may also be present.
  • Suitable bleach stabilisers include ethylenediamine tetraacetate (EDTA) and the polyphosphonates such as Dequest (Trade Mark), EDTMP.
  • compositions notwithstanding the above it is preferred for the composition to contain no bleach and to rely on the improved clay stain removal derived from the novel hydroxamate and surfactant combination. This is particularly the case for liquid compositions.
  • the detergent compositions may also contain one or more of
  • Suitable enzymes include the proteases, amylases, cellulases, oxidases, peroxidases and lipases usable for incorporation in detergent compositions.
  • detergency enzymes are commonly employed in granular form in amounts of from about 0.1 to about 3.0 wt%. However, any suitable physical form of enzyme may be used in any effective amount.
  • Antiredeposition agents for example cellulose esters and ethers, for example sodium carboxymethyl cellulose, may also be present .
  • the compositions may also contain soil release polymers, for example sulphonated and unsulphonated PET/POET polymers, both end-capped and non-end-capped, and polyethylene
  • glycol/polyvinyl alcohol graft copolymers such as Sokolan
  • Especially preferred soil release polymers are the sulphonated non-end-capped polyesters described and claimed in WO 95 32997A (Rhodia Chimie) .
  • a product according to the invention may take any suitable form, such as a solid, liquid or paste composition, for example as particulates (powders, granules), tablets or bars.
  • the product is in a concentrated liquid with a surfactant concentration of at least 30wt%.
  • a surfactant concentration of at least 30wt%.
  • hydrotropes are propylene glycol and glycerol. Based on this teaching the skilled person will be able to select other hydrotropes that avoid the use of highly volatile solvents like ethanol without the need for inventive activity.
  • detergent composition is in particulate form.
  • the ratio of anionic to nonionic surfactant in the detersive surfactant system is then preferably at least 3:2, preferably at least 7:2.
  • Powders of low to moderate bulk density may be prepared by spray-drying slurry, and optionally post dosing (dry-mixing) further ingredients.
  • Routes available for powder manufacture include spray drying, drum drying, fluid bed drying, and scraped film drying devices such as the wiped film evaporator.
  • a preferred form of scraped film device is a wiped film
  • wiped film evaporator is the x Dryex system' based on a wiped film evaporator available from Ballestra S.p.A.
  • Alternative equipment would be the Chemithon the x Turbo Tube' dryer system wherein a high active surfactant paste is heated and metering to a multi tube, steam-j acketed drying vessel.
  • ⁇ Concentrated' or 'compact' powders may be prepared by mixing and granulating processes, for example, using a high-speed mixer/granulator, or other non-tower processes. Tablets may be prepared by compacting powders, especially
  • SRI is a measure of how much of a stain on textile is removed during a washing process.
  • the intensity of any stain can be measured by means of a reflectometer in terms of the difference between the stain and a clean cloth giving ⁇ * for each stain. It is defined as ⁇ * and is calculated as:
  • L*, a*, and b* are the coordinates of the CIE 1976 [L*, a*, b*) colour space, determined using a standard reflectometer .
  • ⁇ * can be measured before and after the stain is washed, to give AE* bw (before wash) and AE* aw (after wash) .
  • SRI is then defined as :
  • a SRI of 100 means complete removal of a stain.
  • ⁇ after wash is the difference in L a b colour space between the clean (unwashed) fabric and the stain after wash. So a ⁇ after wash of zero means a stain that is completely removed. Therefore, a SRI aw (aw: after wash) of 100 is a completely removed stain.
  • the clean (or virgin) fabric is an "absolute standard" which is not washed. For each experiment, it refers to an identical piece of fabric to that which the stain is applied. Therefore, its point in L a b colour space stays constant .
  • the Tergometer wash protocol For the determination of the SRI-values, a standard protocol was used, called the Tergometer wash protocol.
  • Said Tergometer wash protocol is as follows:
  • the surfactants were sodium alkyl benzene sulphonate (Na LAS anionic) , alcohol ethoxylate (non-ionic C12 -7EO, Neodol 25-7 ex Shell) and a neutralised saturated soap (coco fatty acid -
  • Prifac-5908 ex Uniqema Prifac-5908 ex Uniqema
  • Table 1 at the indicated concentrations.
  • SRI Stain removal index
  • Example 2 Removal of a range of red mud on knitted polyester (Hydroxamate level less than or equal to 0.05% in product)
  • the surfactants were sodium alkyl benzene sulphonate (Na LAS anionic) , alcohol ethoxylate (non-ionic C12 -7EO, Neodol 25-7 ex Shell) and a neutralised saturated soap (coco fatty acid - Prifac-5908 ex Uniqema) , as shown in Table 4 at the indicated concentrations.. Also used were standard compounds of a laundry liquid builder (sodium citrate) , , buffer and sequestrant
  • SRI Stain removal index

Abstract

La présente invention porte sur une composition détergente pour le linge, comprenant 0,005 à moins de 0,5 % en poids d'hydroxamate et 3 à 80 % en poids d'un système tensio-actif comprenant un tensio-actif anionique et un tensio-actif non ionique selon un rapport de 1:1,1 à 19:1. La composition présente une détergence améliorée, notamment en liaison avec des taches particulaires.
PCT/EP2011/057935 2010-06-03 2011-05-17 Composition détergente pour le linge WO2011151170A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA2797860A CA2797860A1 (fr) 2010-06-03 2011-05-17 Composition detergente pour le linge
BR112012030743A BR112012030743A2 (pt) 2010-06-03 2011-05-17 composição detergente para lavagem de roupa e uso da mesma
AU2011260477A AU2011260477B2 (en) 2010-06-03 2011-05-17 Laundry detergent composition
CN201180027452.3A CN102918142B (zh) 2010-06-03 2011-05-17 洗衣洗涤剂组合物
EP11719834.1A EP2576742A1 (fr) 2010-06-03 2011-05-17 Composition détergente pour le linge
ZA2012/08410A ZA201208410B (en) 2010-06-03 2012-11-08 Laundry detergent composition

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EP10164839 2010-06-03
EP10164839.2 2010-06-03

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WO2011151170A1 true WO2011151170A1 (fr) 2011-12-08

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EP (1) EP2576742A1 (fr)
CN (1) CN102918142B (fr)
AU (1) AU2011260477B2 (fr)
BR (1) BR112012030743A2 (fr)
CA (1) CA2797860A1 (fr)
WO (1) WO2011151170A1 (fr)
ZA (1) ZA201208410B (fr)

Cited By (2)

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WO2012156250A1 (fr) 2011-05-13 2012-11-22 Unilever Plc Compositions de détergent de blanchisserie concentrées aqueuses
WO2014072214A1 (fr) 2012-11-09 2014-05-15 Unilever N.V. Composition et procédé pour le traitement de substrats

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CN103541081B (zh) * 2013-11-01 2015-11-18 百隆东方股份有限公司 一种异色涤棉混色纱的制作方法
CN108559655A (zh) * 2018-06-08 2018-09-21 康柏利科技（苏州）有限公司 一种超浓缩洗衣液及其制备方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012156250A1 (fr) 2011-05-13 2012-11-22 Unilever Plc Compositions de détergent de blanchisserie concentrées aqueuses
WO2014072214A1 (fr) 2012-11-09 2014-05-15 Unilever N.V. Composition et procédé pour le traitement de substrats

Also Published As

Publication number Publication date
AU2011260477B2 (en) 2013-09-26
CN102918142B (zh) 2016-07-06
EP2576742A1 (fr) 2013-04-10
CA2797860A1 (fr) 2011-12-08
CN102918142A (zh) 2013-02-06
AU2011260477A1 (en) 2012-12-06
BR112012030743A2 (pt) 2016-11-01
ZA201208410B (en) 2014-01-29

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