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
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2086—Hydroxy carboxylic acids-salts 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0031—Carpet, upholstery, fur or leather cleansers
• • 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
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2082—Polycarboxylic acids-salts 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/33—Amino carboxylic acids
• • 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
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/361—Phosphonates, phosphinates or phosphonites
• • 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
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/364—Organic compounds containing phosphorus containing nitrogen
• • 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
  • C11D3/39—Organic or inorganic per-compounds
  • C11D3/3947—Liquid compositions

Definitions

• the present invention relates to peroxygen bleach-containing compositions particularly suitable for the cleaning of carpets whereby colour safety is improved. Moreover, the compositions of the present invention provide excellent colour safety on the surface treated therewith when used in other applications apart from carpet cleaning applications, such as in laundry applications for example as a laundry detergent, a laundry additive or even a laundry pretreater.
• carpets produced from synthetic or natural fibres and mixtures thereof are commonly used in residential and commercial applications as a floor covering.
• Various types of fibres can be used in making carpets such as polyamide fibres, polyester fibres as well as wool, cotton or even silk in the case of rugs.
• carpets irrespective of whether they are made from natural or synthetic fibres are all prone to soiling and staining, when contacted with many household items.
• Foods, grease, oils, beverages in particular such as coffee, tea and soft drinks especially those containing acidic dyes can cause unsightly, often dark stains on carpets.
• the object of the present invention is to provide compositions particularly suitable for cleaning carpets that deliver overall effective stains removal performance on various types of stains including particulate stains, greasy stains, bleachable stains and/or enzymatic stains while providing improved colour safety.
• compositions which comprise a peroxygen bleach, a chelating agent having a mobility factor greater or equal to 0.7, and a cheating agent having a mobility factor lower than 0.6, at a weight ratio of the cheating agent having a mobility factor greater or equal to 0.7 to the cheating agent having a mobility factor lower than 0.6 of more than 1:1. More particularly, it has been found that the combination of said chelating agents with different mobility factors as defined herein, in a peroxygen bleach-containing composition results in a synergistic effect on colour safety on the treated carpets.
• compositions of the present invention are also suitable to clean upholstery and/or car seats covering. Furthermore, the compositions herein may also be used in laundry applications as a laundry detergent or additive or even in a laundry pretreatment application.
• compositions according to the present invention are that effective overall stain removal performance on various stains is provided including greasy stains, (e.g., make-up, lipstick, dirty motor oil and mineral oil, greasy food like mayonnaise and spaghetti sauce), bleachable stains (e.g., coffee, beverage, food), enzymatic stains (e.g. blood, grass) and/or particulate stains (e.g. clay, dirt, dust, mud, concrete and the like), especially on diffuse layers of stains/soils which occur in the so called "high traffic areas", i.e., on stains/soils which have become otherwise extremely difficult to remove.
• the cleaning action of the invention starts as soon as the composition herein has been applied to the surface for example carpet. Indeed, the use of a composition of the present invention on a carpet does not necessarily require rubbing and/or brushing of the carpet.
• WO 96/15308 discloses a method for cleaning carpets wherein a composition comprising a chelating agent in combination with a soil suspending polycarboxylate or polyamine polymer is applied to said carpet.
• Suitable chelants include phosphonate chelating agents, polyfunctionally-substituted aromatic chelating agents, amino carboxylate chelating agents, polyfunctionally-substituted aromatic cheating agents and mixtures thereof.
• Compositions 3 and 4 exemplified therein comprise hydrogen peroxide (7%), citric acid (0.3%) and diethylene triamine penta methylene phosphonic acid (0.2%).
• EP-A-0 751 213 discloses a carpet cleaning composition
• a carpet cleaning composition comprising salicylic acid (0.01%-10%), and a compound selected from the group consisting of amine oxides, soil suspending polycarboxylate or polyamine polymers, hydroxy-pyridine N-oxides, chelating agents and mixtures thereof (0.01%-20%).
• None of the compositions exemplified comprises a peroxygen bleach, a cheating agent having a mobility factor greater or equal to 0.7, and a chelating agent having a mobility factor lower than 0.6, at a weight ratio of the chelating agent having a mobility factor greater or equal to 0.7 to the chelating agent having a mobility factor lower than 0.6 of more than 1:1.
• WO 96/26999 discloses the use of a liquid composition comprising a peroxygen bleach and a compound chelating copper/iron and/or manganese for pretreating a soiled fabric before said fabric is washed, whereby the loss of tensile strength in said fabric is reduced and/or colour damage is reduced.
• Suitable cheating agents include aminocarboxylates, phosphonates/aminophosphonates, polyfunctionally-substituted aromatic chelating agents, and mixtures thereof. None of the compositions exemplified comprises a mixture of cheating agents according to the present invention.
• WO 97/01624 discloses aqueous bleaching compositions comprising a peroxygen bleach and a fabric protection agent having a mobility factor greater than 0.7. None of the compositions exemplified comprises a mixture of chelating agents according to the present invention.
• compositions of the present invention comprising a peroxygen bleach, a chelating agent having a mobility factor greater or equal to 0.7 and a chelating agent having a mobility of lower than 0.6, at a weight ratio of the chelating agent having a mobility factor greater or equal to 0.7 to the cheating agent having a mobility factor lower than 0.6 of more than 1:1.
• the present invention also encompasses a method of pretreating a fabric with a composition as described herein before, said method comprising the steps of applying said composition in its neat form onto the fabric, and allowing said composition to remain in contact with said fabric before said fabric is rinsed, or washed and then rinsed.
• compositions of the present invention are provided.
• compositions of the present invention comprise a peroxygen bleach or mixtures thereof.
• a preferred peroxygen bleach according to the present invention is hydrogen peroxide or sources thereof.
• a hydrogen peroxide source refers to any compound which produces perhydroxyl ions when said compound is in contact with water. Indeed, the presence of a peroxygen bleach, preferably hydrogen peroxide, contributes to the excellent cleaning and bleaching benefits of the compositions of the present invention.
• Suitable preformed peroxyacids for use in the compositions according to the present invention include diperoxydodecandioic acid DPDA, magnesium perphthalatic acid, perlauric acid, perbenzoic acid, diperoxyazelaic acid and mixtures thereof.
• Suitable organic or inorganic peroxides for use in the compositions of the present invention include diacyl and dialkyl peroxides like dilauroyl peroxide, didecanoyl peroxide, dimyristoyl peroxide or mixtures thereof.
• compositions of the present invention comprise a chelating agent having a mobility factor (defined hereinafter) greater or equal to 0.7 or a mixture thereof.
• Mobility Factor is a measure of the chelating agent's ability to migrate on a cellulose substrate and is experimentally determined in a thin layer chromatography test.
• the thin layer chromatography test is conducted as follows. A sample of a chelating agent candidate to be measured is spotted onto a Baker-flex Cellulose F' indicating thin layer chromatography plate using a capillary applicator and subsequently developed in an enclosed chamber using 0.001 N aqueous acetic acid:ethanol (50:50 mixture) as the elutant. After drying, the plates are visualised under UV/vis light or exposure to iodine vapor.
• the "mobility factor” as used herein is thus defined as the retention factor (R f ), commonly recognised by those skilled in the art as the distance in which the sample moved divided by the distance in which the solvent front moved on the thin layer chromatography plate.
• R f retention factor
• Said thin layer chromatography methods are well known in the art and are described for example in Touchstone, J. C. Practice of Thin Layer Chromatography, 3 rd Edition , John Wiley & Sons: New York, 1992.
• the mobility factor equal to the retention factor, ranges from 0 to 1, with 1 being the highest mobility.
• the chelating agents with a high mobility factor of this invention posses excellent mobility on cellulose, as measured by this mobility test.
• Stability constants are further defined in and procedures for the experimental determination of are included in Martell, A. E.; Smith, R. M. Critical Stability Constants , Plenum Press: New York, 1974; Volume 1, and references cited therein.
• stability constant herein is meant log K values also designated as "log K 1 " as defined in Martell, cited above.
• the cheating agents with a high mobility factor herein preferably comprise at least two moieties capable of chelating or binding metal ions, such as carboxylic, amino (primary, secondary, or tertiary), amido, hydroxy moieties, and mixtures thereof.
• moieties capable of chelating or binding metal ions such as carboxylic, amino (primary, secondary, or tertiary), amido, hydroxy moieties, and mixtures thereof.
• carboxylic means either carboxylic acid or the unprotonated carboxylate.
• the chelating agents with a mobility factor greater or equal to 0.7 include those agents selected from the group consisting of citric acid, glycine, salicylic acid, glutamic acid, aspartic acid, the corresponding conjugate base salts (i.e., monosodium glutamate), and mixtures thereof.
• Salicylic acid is particularly preferred herein and may be commercially available from Rhone Poulenc.
• a preferred concentration range of the chelating agent with a mobility factor greater or equal to 0.7 or a mixture thereof is from 0.01% to 4%, more preferably from 0.1% to 1.5%, and most preferably from 0.1% to 1% by weight of the total bleaching composition.
• the chelating agents with a lower mobility factor for use in the compositions of the present invention have a mobility factor of 0.5 or below, more preferably of 0.3 or below and most preferably of 0.2 or below.
• stability constant herein is meant log K values also designated as "log K 1 " as defined in Martell, cited above.
• the chelating agents with a low mobility factor herein include phosphonate chelating agents, polyfunctionally-substituted aromatic chelating agents, amino carboxylate chelating agents, other cheating agents like ethylene diamine N,N'- disuccinic acid and mixtures thereof.
• Suitable phosphonate chelating agents for use herein may include alkali metal hydroxy ethylidene 1,1 diphosphonates (HEDP), ethane 1-hydroxy diphosphonates as well as amino phosphonate compounds, including aminotri(methylene phosphonate) (ATMP), amino alkylene poly (alkylene phosphonate), alkali metal ethane 1-hydroxy diphosphonates, nitrilo trimethylene phosphonates, ethylene diamine tetra methylene phosphonates, and diethylene triamine penta methylene phosphonates.
• the phosphonate compounds may be present either in their acid form or as salts of different cations on some or all of their acid functionalities.
• aminophosphonate cheating agents are commercially available from Monsanto under the trade name DEQUEST®.
• HEDP alkali metal hydroxy ethylidene 1,1 diphosphonates
• DETPMP diethylene triamine penta methylene phosphonates
• a preferred biodegradable chelating agent for use herein is ethylene diamine N,N'-disuccinic acid, or alkali metal, or alkaline earth, ammonium or substitutes ammonium salts thereof or mixtures thereof.
• Ethylenediamine N,N'-disuccinic acids, especially the (S,S) isomer have been extensively described in US patent 4, 704, 233, November 3, 1987. to Hartman and Perkins.
• Suitable amino carboxylate chelating agents for use herein include ethylene diamine tetra acetates, diethylene triamine pentaacetates, diethylene triamine pentaacetate (DTPA), N-hydroxyethylethylenediamine triacetates, nitrilotriacetates, ethylenediamine tetrapropionates, triethylenetetraaminehexaacetates, ethanoldiglycines, propylene diamine tetracetic acid (PDTA) and methyl glycine di-acetic acid (MGDA), both in their acid form, or in their alkali metal, ammonium, and substituted ammonium salt forms.
• compositions herein comprise from 0.01% to 2% by weight of the total composition of a chelating agent having a mobility factor lower than 0.6 or mixtures thereof, preferably from 0.02% to 1%, and more preferably from 0.02% to 0.6%.
• compositions of the present invention comprising a peroxygen bleach, a chelating agent having a mobility factor greater or equal to 0.7 and a cheating agent having a mobility factor lower than 0.6, at a weight ratio of the chelating agent having a mobility factor greater or equal to 0.7 to the chelating agent having a mobility factor lower than 0.6 of more than 1:1.
• the weight ratio of the chelating agent having a mobility factor greater or equal to 0.7 to the chelating agent having a mobility factor lower than 0.6 is from 1.1:1 to 10:1, preferably from 1.2:1 to 6:1, more preferably from 1.5:1 to 4:1 and most preferably from 2:1 to 3.5:1.
• PSU data can be handled statistically using conventional techniques.
• various types of optical apparatus and procedures can be used to assess the improvement in colour safety afforded by the present invention. For example, when evaluating colour safety on fabrics measurements with Hunterlab colour Quest 45/0 apparatus can be used.
• the pH of the liquid compositions according to the present invention can be from 1 to 14.
• the recommended pH range is from 1 to 8, preferably between pH 1 and 7, more preferably between pH 1 and 6 and most preferably between 4 and 6.
• These preferred pH ranges contribute to the stain removal of the compositions herein.
• these preferred pH ranges contribute to the stability of hydrogen peroxide.
• the compositions herein may further comprise an acid or base to adjust pH as appropriate.
• the acids that may be used for these purposes can be organic acids (e.g. citric acid) or inorganic acids such as sulphuric acid.
• the bases for use herein can be organic or inorganic bases, preferably inorganic bases such as sodium hydroxide.
• Surfactants may be used in the compositions of the present invention.
• Surfactants for use herein are those well known in the art and include anionic, nonionic, zwitterionic, amphoteric and cationic surfactants and mixtures thereof.
• the surfactants suitable for use herein are compatible with peroxygen beaches like hydrogen peroxide and sources thereof.
• compositions herein comprise up to 50% by weight of the total composition of a surfactant or mixtures thereof, preferably from 0.1% to 30% and more preferably from 0.5% to 10%.
• Particularly suitable surfactants for use herein are anionic surfactants.
• Said anionic surfactants are preferred herein as they contribute to the stain removal performance of the compositions of the present invention on various types of stains. Moreover they do not stick on carpet, thereby reducing resoiling.
• anionic surfactants useful for detersive purposes can also be used herein. These can include salts (including, for example, sodium, potassium, ammonium, and substituted ammonium salts such as mono-, di- and triethanolamine salts) of soap, C 8 -C 22 primary or secondary alkanesulfonates, C 8 -C 24 olefinsulfonates, sulfonated polycarboxylic acids prepared by sulfonation of the pyrolyzed product of alkaline earth metal citrates, e.g., as described in British patent specification No.
• salts including, for example, sodium, potassium, ammonium, and substituted ammonium salts such as mono-, di- and triethanolamine salts
• C 8 -C 22 primary or secondary alkanesulfonates C 8 -C 24 olefinsulfonates
• sulfonated polycarboxylic acids prepared by sulfonation of the pyrolyzed product of alkaline
• alkylpolyglycolethersulfates (containing up to 10 moles of ethylene oxide); alkyl ester sulfonates such as C 14-16 methyl ester sulfonates; acyl glycerol sulfonates, fatty oleyl glycerol sulfates, alkyl phenol ethylene oxide ether sulfates, paraffin sulfonates, alkyl phosphates, isethionates such as the acyl isethionates, N-acyl taurates, alkyl succinamates and sulfosuccinates, monoesters of sulfosuccinate (especially saturated and unsaturated C 12 -C 18 monoesters) diesters of sulfosuccinate (especially saturated and unsaturated C 6 -C 14 diesters), sulfates of alkylpolysaccharides such as the sulfates of alkylpolysaccharides such as
• Resin acids and hydrogenated resin acids are also suitable, such as rosin, hydrogenated rosin, and resin acids and hydrogenated resin acids present in or derived from tall oil. Further examples are given in "Surface Active Agents and Detergents" (Vol. I and II by Schwartz, Perry and Berch). A variety of such surfactants are also generally disclosed in U.S. Patent 3,929,678, issued December 30, 1975 to Laughlin, et al. at Column 23, line 58 through Column 29, line 23 (herein incorporated by reference).
• acyl sarcosinate or mixtures thereof, in its acid and/or salt form preferably long chain acyl sarcosinates having the following formula: wherein M is hydrogen or a cationic moiety and wherein R is an alkyl group of from 11 to 15 carbon atoms, preferably of from 11 to 13 carbon atoms.
• M are hydrogen and alkali metal salts, especially sodium and potassium.
• Said acyl sarcosinate surfactants are derived from natural fatty acids and the amino-acid sarcosine (N-methyl glycine). They are suitable to be used as aqueous solution of their salt or in their acidic form as powder. Being derivatives of natural fatty acids, said acyl sarcosinates are rapidly and completely biodegradable and have good skin compatibility.
• particularly preferred long chain acyl sarcosinates for use herein include C 12 acyl sarcosinate (i.e. an acyl sarcosinate according to the above formula wherein M is hydrogen and R is an alkyl group of 11 carbon atoms) and C 14 acyl sarcosinate (i.e. an acyl sarcosinate according to the above formula wherein M is hydrogen and R is an alkyl group of 13 carbon atoms).
• C 12 acyl sarcosinate is commercially available, for example, as Hamposyl L-30 ® supplied by Hampshire.
• C 14 acyl sarcosinate is commercially available, for example, as Hamposyl M-30® supplied by Hampshire.
• amine oxide surfactants according to the formula R1R2R3NO, wherein each of R1, R2 and R3 is independently a saturated substituted or unsubstituted, linear or branched alkyl groups of from 1 to 30 carbon atoms, preferably of from 1 to 20 carbon atoms, and mixtures thereof.
• said amine oxide surfactants used are pure-cut amine oxide surfactants, i.e., a pure single amine oxide surfactant, e.g. C 8 N,N-dimethyl amine oxide, as opposed to mixtures of amine oxide surfactants of different chain lengths
• Such amine oxide surfactants are preferred herein as they contribute to the stain removal performance of the compositions herein on various types of stains. Also such amine oxide surfactants contribute to improve the chemical stability of said compositions. It is believed that improved chemical stability associated to the use of said amine oxide surfactants in bleaching compositions is due to the capacity of said amine oxide surfactants to lower the decomposition of said source of active oxygen and/or to limit interactions between said source of active oxygen and a bleach activator, if present, possibly through emulsification. It is believed that this stabilising effect is matrix independent.
• amine oxide surfactants especially pure-cut amine oxide surfactants, have the advantage to reduce the amount of residues left onto carpet fibres being treated with a composition comprising them. Also, the residues left after said composition comprising them has performed its cleaning action onto said carpet fibres are partially in a crystalline form. Indeed, it has been observed that with the compositions of the present invention which comprise said amine oxide surfactants, and especially a pure-cut amine oxide surfactant, more than 90%, preferably more than 95% of the residues left onto the carpet fibres are crystals (generally lamellar and/or needle-shaped) with an average particle surface bigger than 300 ⁇ 2 . This results in a process of cleaning carpets whereby the residues left onto the carpets are removed more easily as opposed to residues being sticky and thus difficult to remove by for example vacuum cleaning said carpets.
• nonionic surfactants which may be used herein include any liquid or solid ethoxylated C 6 -C 24 fatty alcohol nonionic surfactant, alkyl ethoxylated/propoxylated nonionic surfactants (of the Lutensol®, Neodol® and/or Dobanol® series available from Shell), fatty acid C 6 -C 24 alkanolamides, C 6 -C 20 polyethylglycol ethers, polyethylene glycol with molecular weight 1000 to 80000 and alkyl pyrrolidones.
• Suitable nonionic surfactants for use herein include polyhydroxy fatty acid amide surfactants, or mixtures thereof, according to the formula: R 2 - C(O) - N(R 1 ) - Z, wherein R 1 is H, or C 1- C 4 alkyl, C 1- C 4 hydrocarbyl, 2-hydroxy ethyl, 2-hydroxy propyl or a mixture thereof, R 2 is C 5- C 31 hydrocarbyl, and Z is a polyhydroxyhydrocarbyl having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative thereof.
• R 1 is C 1- C 4 alkyl, more preferably C 1 or C 2 alkyl and most preferably methyl
• R 2 is a straight chain C 7- C 19 alkyl or alkenyl, preferably a straight chain C 9- C 18 alkyl or alkenyl, more preferably a straight chain C 11- C 18 alkyl or alkenyl, and most preferably a straight chain C 11- C 14 alkyl or alkenyl, or mixtures thereof.
• Z preferably will be derived from a reducing sugar in a reductive amination reaction; more preferably Z is a glycityl.
• Z preferably will be selected from the group consisting of -CH 2 -(CHOH) n -CH 2 OH, -CH(CH 2 OH)-(CHOH) n-1 -CH 2 OH, -CH 2 -(CHOH) 2 -(CHOR')(CHOH)-CH 2 OH, where n is an integer from 3 to 5, inclusive, and R' is H or a cyclic or aliphatic monosaccharide, and alkoxylated derivatives thereof. Most preferred are glycityls wherein n is 4, particularly CH 2 -(CHOH) 4 -CH 2 OH.
• Z can be 1 - deoxyglucityl, 2-deoxyfructityl, 1-deoxymaltityl, 1-deoxylactityl, 1-deoxygalactityl, 1-deoxymannityl, 1-deoxymaltotriotityl and the like.
• Suitable polyhydroxy fatty acid amide surfactants for use herein may be commercially available under the trade name HOE® from Hoechst.
• polyhydroxy fatty acid amide surfactants are known in the art. In general, they can be made by reacting an alkyl amine with a reducing sugar in a reductive amination reaction to form a corresponding N-alkyl polyhydroxyamine, and then reacting the N-alkyl polyhydroxyamine with a fatty aliphatic ester or triglyceride in a condensation/amidation step to form the N-alkyl, N-polyhydroxy fatty acid amide product.
• compositions containing polyhydroxy fatty acid amides are disclosed for example in GB patent specification 809,060, published February 18, 1959, by Thomas Hedley & Co., Ltd., US patent 2,965,576, issued December 20, 1960 to E.R. Wilson, US patent 2,703,798, Anthony M. Schwartz, issued March 8, 1955, US patent 1,985,424, issued December 25, 1934 to Piggott and WO92/06070, each of which is incorporated herein by reference.
• Suitable cationic surfactants for use herein include quaternary ammonium compounds of the formula R 1 R 2 R 3 R 4 N + where R 1 ,R 2 and R 3 are methyl groups, and R 4 is a C 12-15 alkyl group, or where R 1 is an ethyl or hydroxy ethyl group, R 2 and R 3 are methyl groups and R 4 is a C 12-15 alkyl group.
• Suitable zwitterionic betaine surfactants for use herein contain both a cationic hydrophilic group, i.e., a quaternary ammonium group, and anionic hydrophilic group on the same molecule at a relatively wide range of pH's.
• the typical anionic hydrophilic groups are carboxylates and sulfonates, although other groups like sulfates, phosphonates, and the like can be used.
• R 1 -N + (R 2 )(R 3 )R 4 X - wherein R 1 is a hydrophobic group; R 2 is hydrogen, C 1 -C 6 alkyl, hydroxy alkyl or other substituted C 1 -C 6 alkyl group; R 3 is C 1 -C 6 alkyl, hydroxy alkyl or other substituted C 1 -C 6 alkyl group which can also be joined to R 2 to form ring structures with the N, or a C 1 -C 6 carboxylic acid group or a C 1 -C 6 sulfonate group; R 4 is a moiety joining the cationic nitrogen atom to the hydrophilic group and is typically an alkylene, hydroxy alkylene, or polyalkoxy group containing from 1 to 10 carbon atoms; and X is the hydrophilic group which is a carboxylate or sulfonate group.
• R 1 are aliphatic or aromatic, saturated or unsaturated, substituted or unsubstituted hydrocarbon chains that can contain linking groups such as amido groups, ester groups. More preferred R 1 is an alkyl group containing from 1 to 24 carbon atoms, preferably from 8 to 18, and more preferably from 10 to 16. These simple alkyl groups are preferred for cost and stability reasons.
• the hydrophobic group R 1 can also be an amido radical of the formula R a -C(O)-NH-(C(R b ) 2 ) m , wherein R a is an aliphatic or aromatic, saturated or unsaturated, substituted or unsubstituted hydrocarbon chain, preferably an alkyl group containing from 8 up to 20 carbon atoms, preferably up to 18, more preferably up to 16, R b is selected from the group consisting of hydrogen and hydroxy groups, and m is from 1 to 4, preferably from 2 to 3, more preferably 3, with no more than one hydroxy group in any (C(R b ) 2 ) moiety.
• Preferred R 2 is hydrogen, or a C 1 -C 3 alkyl and more preferably methyl.
• Preferred R 3 is a C 1 -C 4 carboxylic acid group or C1-C4 sulfonate group, or a C 1 -C 3 alkyl and more preferably methyl.
• Preferred R 4 is (CH2) n wherein n is an integer from 1 to 10, preferably from 1 to 6, more preferably is from 1 to 3.
• amidobetaines include cocoamidoethylbetaine, cocoamidopropyl betaine or C10-C14 fatty acylamidopropylene(hydropropylene)sulfobetaine.
• C10-C14 fatty acylamidopropylene(hydropropylene)sulfobetaine is commercially available from Sherex Company under the trade name "Varion CAS® sulfobetaine".
• any soil suspending polycarboxylate polymer known to those skilled in the art can be used according to the present invention such as homo- or co-polymeric polycarboxylic acids or their salts including polyacrylates and copolymers of maleic anhydride or/and acrylic acid and the like.
• soil suspending polycarboxylate polymers can be prepared by polymerizing or copolymerizing suitable unsaturated monomers, preferably in their acid form.
• Unsaturated monomeric acids that can be polymerized to form suitable polymeric polycarboxylates include acrylic acid, maleic acid (or maleic anhydride), fumaric acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid and methylenemalonic acid.
• the presence in the polymeric polycarboxylates herein of monomeric segments, containing no carboxylate radicals such as vinylmethyl ether, styrene, ethylene, etc. is suitable provided that such segments do not constitute more than about 40% by weight.
• Particularly suitable polymeric polycarboxylates to be used herein can be derived from acrylic acid.
• acrylic acid-based polymers which are useful herein are the water-soluble salts of polymerized acrylic acid.
• the average molecular weight of such polymers in the acid form preferably ranges from about 2,000 to 10,000, more preferably from about 4,000 to 7,000 and most preferably from about 4,000 to 5,000.
• Water-soluble salts of such acrylic acid polymers can include, for example, the alkali metal, ammonium and substituted ammonium salts. Soluble polymers of this type are known materials. Use of polyacrylates of this type in detergent compositions has been disclosed, for example, in Diehl, U.S. Patent 3,308,067, issued March 7, 1967.
• Acrylic/maleic-based copolymers may also be used as a preferred soil suspending polycarboxylic polymer.
• Such materials include the water-soluble salts of copolymers of acrylic acid and maleic acid.
• the average molecular weight of such copolymers in the acid form preferably ranges from about 2,000 to 100,000, more preferably from about 5,000 to 75,000, most preferably from about 7,000 to 65,000.
• the ratio of acrylate to maleate segments in such copolymers will generally range from about 30:1 to about 1:1, more preferably from about 10:1 to 2:1.
• Water-soluble salts of such acrylic acid/maleic acid copolymers can include, for example, the alkali metal, ammonium and substituted ammonium salts.
• compositions herein comprise up to 10% by weight of the total composition of a soil suspending polycarboxylate polymer or mixtures thereof, preferably from 0.1% to 8% and more preferably from 0.5% to 4%.
• any soil suspending polyamine polymer known to those skilled in the art may also be used herein.
• Particularly suitable polyamine polymers for use herein are polymers having polyalkoxymoiety are alkoxylated polyamines.
• Such materials can conveniently be represented as molecules of the empirical structures with repeating units : wherein R is a hydrocarbyl group, usually of 2-6 carbon atoms; R 1 may be a C 1 -C 20 hydrocarbon; the alkoxy groups are ethoxy, propoxy, and the like, and y is 2-30, most preferably from 10-20; n is an integer of at least 2, preferably from 2-20, most preferably 3-5; and X - is an anion such as halide or methylsulfate, resulting from the quaternization reaction.
• ethoxylated polyethylene amine in particular ethoxylated tetraethylenepentamine, and quaternized ethoxylated hexamethylene diamine.
• compositions herein may also comprise a hydroxy pyridine N-oxides or derivatives thereof according to the following formula: wherein X is nitrogen, Y is one of the following groups oxygen, -CHO, -OH, - (CH2)n-COOH, wherein n is an integer of from 0 to 20, preferably of from 0 to 10 and more preferably is 0, and wherein Y is preferably oxygen.
• X is nitrogen
• Y is one of the following groups oxygen
• n is an integer of from 0 to 20, preferably of from 0 to 10 and more preferably is 0, and wherein Y is preferably oxygen.
• particularly preferred hydroxy pyridine N-oxides or derivatives thereof to be used herein is 2-hydroxy pyridine N-oxide.
• compositions herein comprise up to 2% by weight of the total composition of a hydroxy pyridine N-oxide or derivatives thereof or mixtures thereof, preferably from 0.001% to 1% and more preferably from 0.001% to 0.5%.
• Suitable alcohols for use herein are according to the formula R-OH wherein R is a linear or branched, saturated or unsaturated hydrocarbon chain of 1 to 4 carbon atoms, preferably of 2 to 4 carbon atoms and most preferably of 4 carbon atoms, or mixtures thereof.
• hydrophilic solvents comprising one or more ether groups and having a solubility in water higher than 10 ml per 100ml at 25°C
• polyol hydrophilic solvents having a solubility in water higher than 10 ml per 100 ml at 25°C
• hydrophobic solvents having a solubility in water lower than 10 ml per 100ml at 25°C and mixtures thereof.
• the hydrophilic solvents to be used herein have a solubility in water higher than 15 ml per 100 ml at 25°C and more preferably higher than 20 ml per 100 ml at 25°C.
• the hydrophobic solvents to be used herein preferably have a solubility in water lower than 7ml per 100 ml at 25°C and more preferably lower than 5 ml per 100 ml at 25°C.
• solubility of a given compound, it is to be understood herein the amount of said compound solubilized in deionized water at 25°C.
• a compound having a solubility being lower than 10 ml per 100ml means that when less than 10 ml of said given compound is incorporated in 100 ml of deionized water at 25°C said compound is entirely dissolved in said water, i.e., a clear and stable solution is obtained.
• incorporating 10 ml per 100 ml or more of said given compound in water will result in a precipitation of said compound in said medium.
• Suitable polyglycol ethers and derivatives thereof to be used herein include n-butoxypropoxypropanol (n-BPP), butyl triglycol ether (BTGE), butyl diglycol ether (BDGE), water-soluble CARBITOL® solvents or mixtures thereof.
• Preferred hydrophilic solvents having one or more ether groups for use herein are 2-ethoxyethanol, 2-butoxyethanol, n-butoxypropoxypropanol, butyl carbitol ® or mixtures thereof.
• Suitable polyol hydrophilic solvents to be used herein are the polyols having at least 2 hydroxyl groups (-OH) like diols.
• Suitable diols to be used herein include 2-ethyl-1,3-hexanediol, 2,2,4-trimethyl-1,3-pentanediol, methyl-2,4 pentanediol or mixture thereof.
• Suitable hydrophobic aliphatic alcohols to be used herein are according to the formula R 2 -OH wherein R 2 is a linear or branched saturated or unsaturated hydrocarbon chain of from 5 to 20 carbon atoms, preferably from 6 to 15 and more preferably from 8 to 10.
• Suitable aliphatic alcohols to be used herein include linear alcohols like 2-octanol and/or decanol.
• the preferred hydrophobic solvent for use herein is benzyl alcohol.
• C1-C4 alcohols are used together with another solvent as described herein before, at a weight ratio of said C1-C4 alcohol to said second solvent of 1:10 to 1:1.1, preferably of 1:6 to 1:1.5, more preferably of 1:4 to 1:1.8 and most preferably of 1:3 to 1:2.
• the total level of solvents in the liquid compositions of the present invention is up to 20%, preferably from 0.5% to 10% and more preferably from 1% to 8% by weight of the total composition.
• Such mixtures of solvents are preferably present in the compositions of the present invention as they further contribute to the effective stains removal performance delivered by the compositions of the present invention on various stains including particulate stains as well as greasy/oily stains, bleachable stains and/or enzymatic stains.
• This cleaning benefit is particularly noticeable on particulate soils. Indeed, it is speculated that the preferred solvents system herein have a chemical action on particulate stains like dust, clay and the like as well as a mechanical action.
• compositions herein comprising such a solvent system as described herein on top of a peroxygen bleach and the chelating system as described herein, and being formulated as liquid aqueous compositions, deliver improved chemical stability. Accordingly, said compositions are convenient for the consumer to use. Indeed, said liquid aqueous compositions for the cleaning of carpets according to the present invention do not require pH adjustment prior to use and can be stored for long periods of time prior to use.
• the concentration of available oxygen can be determined by methods known in the art, such as the iodimetric method, the permanganometric method and the cerimetric method. Said methods and the criteria for the choice of the appropriate method are described for example in "Hydrogen Peroxide", W. C. Schumb, C. N. Satterfield and R. L. Wentworth, Reinhold Publishing Corporation, New York, 1955 and "Organic Peroxides", Daniel Swern, Editor Wiley Int. Science, 1970. A preferred method to be used herein is the iodimetric method.
• available oxygen concentration refers to the percentage concentration of elemental oxygen, with an oxidation number zero, that being reduced to water would be stoichiometrically equivalent to a given percentage concentration of a given peroxide compound, when the peroxide functionality of the peroxide compound is completely reduced to oxides.
• the peroxygen bleaches according to the present invention increase the ability of the compositions to remove colored stains, to destroy malodorous molecules and to kill germs.
• Preferred radical scavengers for use herein include di-tert-butyl hydroxy toluene (BHT), p-hydroxy-toluene, hydroquinone (HQ), di-tert-butyl hydroquinone (DTBHQ), mono-tert-butyl hydroquinone (MTBHQ), tert-butyl-hydroxy anysole (BHA), p-hydroxy-anysol, benzoic acid, 2,5-dihydroxy benzoic acid, 2,5-dihydroxyterephtalic acid, toluic acid, catechol, t-butyl catechol, 4-allyl-catechol, 4-acetyl catechol, 2-methoxy-phenol, 2-ethoxy-phenol, 2-methoxy-4-(2-propenyl)phenol, 3,4-dihydroxy benzaldehyde, 2,3-dihydroxy benzaldehyde, benzylamine, 1,1,3-tris(2-methyl-4-hydroxy-5-t-butylpheny
• di-tert-butyl hydroxy toluene which is for example commercially available from SHELL under the trade name IONOL CP® and/or tert-butyl-hydroxy anysole and/or propyl gallate.
• IONOL CP® tert-butyl-hydroxy anysole and/or propyl gallate.
• compositions according to the present invention comprise up to 5% by weight of the total composition of a radical scavenger, or mixtures thereof, preferably from 0.002% to 1.5% by weight and more preferably from 0.002% to 0.5%.
• compositions according to the present invention may further comprise a bleach activator or mixtures thereof, as another optional ingredient.
• bleach activator it is meant herein a compound which reacts with hydrogen peroxide to form a peracid.
• the peracid thus formed constitutes the activated bleach.
• Suitable bleach activators to be used herein include those belonging to the class of esters, amides, imides, or anhydrides. Examples of suitable compounds of this type are disclosed in British Patent GB 1 586 769 and GB 2 143 231 and a method for their formation into a prilled form is described in European Published Patent Application EP-A-62 523.
• Suitable examples of such compounds to be used herein are tetracetyl ethylene diamine (TAED), sodium 3,5,5 trimethyl hexanoyloxybenzene sulphonate, diperoxy dodecanoic acid as described for instance in US 4 818 425 and nonylamide of peroxyadipic acid as described for instance in US 4 259 201 and n-nonanoyloxybenzenesulphonate (NOBS).
• TAED tetracetyl ethylene diamine
• NOBS n-nonanoyloxybenzenesulphonate
• N-acyl caprolactam selected from the group consisting of substituted or unsubstituted benzoyl caprolactam, octanoyl caprolactam, nonanoyl caprolactam, hexanoyl caprolactam, decanoyl caprolactam, undecenoyl caprolactam, formyl caprolactam, acetyl caprolactam, propanoyl caprolactam, butanoyl caprolactam pentanoyl caprolactam or mixtures thereof.
• a particular family of bleach activators of interest was disclosed in EP 624 154, and particularly preferred in that family is acetyl triethyl citrate (ATC).
• Acetyl triethyl citrate has the advantage that it is environmentally friendly as it eventually degrades into citric acid and alcohol. Furthermore, acetyl triethyl citrate has a good hydrolytical stability in the composition upon storage and it is an efficient bleach activator.
• compositions according to the present invention may further comprise a builder system.
• a builder system Any conventional builder system known in the art is suitable for use herein.
• Suitable builders for use herein include derivatives of succinic acid of the formula R_CH(COOH)CH 2 (COOH) wherein R is C 10-20 alkyl or alkenyl, preferably C 12-16 , or wherein R can be substituted with hydroxyl, sulpho sulphoxyl or sulphone substituents.
• Specific examples include lauryl succinate, myristyl succinate, palmityl succinate, 2-dodecenylsuccinate, 2-tetradecenyl succinate.
• Succinate builders are preferably used in the form of their water-soluble salts, including sodium, potassium, ammonium and alkanolammonium salts.
• Suitable builders are oxodisuccinates and mixtures of tartrate monosuccinic and tartrate disuccinic acid such as described in US 4,663,071.
• fatty acid builders including saturated or unsaturated C 10-18 fatty acids, as well as the corresponding soaps.
• Preferred saturated species have from 12 to 16 carbon atoms in the alkyl chain.
• the preferred unsaturated fatty acid is oleic acid.
• compositions herein may comprise from 0% to 10%, preferably from 1% to 7% by weight of the total composition of a builder system.
• the present invention also encompasses a method of cleaning a carpet wherein a composition as described herein, is applied to said carpet, wherein said carpet is then optionally rubbed and/or brushed, and wherein said composition is then removed from said carpet.
• the step of applying a composition for the cleaning of carpets as described herein before may be followed by a rubbing step and/or a brushing step.
• An advantage of the present invention is that the cleaning action of the present compositions starts as soon as said compositions are applied onto said carpet.
• the cleaning process of the present invention does not necessarily require rubbing and/or brushing. It is only in the case of highly soiled carpets or in the so called "high traffic areas" that the carpet may be cleaned by applying onto it a composition for the cleaning of carpets according to the present invention, then rubbing and/or brushing it more or less intensively for example by means of a sponge or a brush or other mechanical/electrical device, optionally with the aid of water.
• compositions according to the present invention may be applied to the carpet to be cleaned either in neat or diluted form, this applies to compositions being either liquid compositions or granular compositions or powder compositions.
• the compositions for the cleaning of carpets according to the present invention are liquid aqueous compositions.
• a liquid aqueous composition i.e., an aqueous as described herein before in its neat form or which has been diluted with water by the user or an aqueous composition resulting from the dilution of a granular composition or of a powder composition, is applied to the carpet to be cleaned, said carpet is optionally rubbed and/or brushed, then said composition is left to dry and then removed from said carpet.
• said liquid aqueous composition is left to dry until said composition which combined with dirt has been changed into dry residues. These residues are then removed from the carpet mechanically.
• Such liquid aqueous compositions may be applied directly onto the area to be treated or applied using a cloth or piece of material such as spraying device or aerosol can, a sponge, a brush or other mechanical/electrical device.
• a liquid aqueous composition is applied to the area to be treated by using a spraying device or an aerosol can.
• a spraying device may be trigger operated or pump operated or electrically operated or operated by any source of pressurised gas such as a can or a pressurizer.
• Such spraying devices are particularly preferable if a large area is to be treated as it facilitates the ease of use for the consumer.
• the spraying devices ensure uniform coverage of the area to be treated and maximises the advantage of the using liquid aqueous compositions containing peroxides. This is because the application of product by spray best allows the product to be left to dry on the area treated, even without rubbing or brushing. This optimises the action time of the composition and allows the best exploitation of the bleaching action of peroxides.
• compositions for the cleaning of carpets according to the present invention are granular compositions or powder compositions.
• Such compositions for the cleaning of carpets according to the present invention may be applied directly onto the area of the carpet to be treated by for example sprinkling said composition over said area or may be applied by using a sponge, a brush, or other mechanical/electrical device preferably in presence of water and then left to dry and then removed from said carpet.
• the area to be treated using the compositions according to the present invention may be any size.
• a complete section or even a whole carpet may be applied with the composition for the cleaning of carpets according to the present invention.
• a spraying device with a pump to allow prolonged spraying is particularly useful.
• compositions for the cleaning of carpets according to the present invention applied will depend on the severity of the stain or soil. In the case of stubborn stains more than one application may be required to ensure complete removal of the stain. Indeed, the carpet cleaning compositions herein are particularly suitable to remove the dinginess of the carpets resulting from a diffused layer of soil which results from general wear.
• compositions according to the present invention may be used both for manual carpet cleaning and carpet cleaning machines.
• carpet cleaning machines the compositions according to the present invention, i.e., either liquid compositions or granular compositions or powder compositions, may be preferably diluted according to the machine operating instructions.
• compositions to be used in such machines are formulated to prevent high sudsing.
• compositions herein may be used for the removal of stains and soils from carpets or upholstery as well as of odors.
• the compositions according to the present invention may be used to hygienise or disinfect carpets and exterminate microinsects from the carpet or upholstery.
• compositions herein may also be suitable to clean fabrics while been particularly safe to colours.
• the present invention also encompasses methods of cleaning fabrics including clothes, curtains, drapes, bed linens, bath linens, table cloths, sleeping bags, tents, upholstered furniture and the like.
• a composition, as defined herein is contacted with the fabrics to be cleaned.
• This can be done either in a so-called “pretreatment mode”, where a composition, as defined herein, is applied neat onto said fabrics before the fabrics are rinsed, or washed then rinsed, or in a "soaking mode” where a composition, as defined herein, is first diluted in an aqueous bath and the fabrics are immersed and soaked in the bath, before they are rinsed, or in a "through the wash mode", where a composition, as defined herein, is added on top of a wash liquor formed by dissolution or dispersion of a typical laundry detergent. It is also essential in both cases, that the fabrics be rinsed after they have been contacted with said composition, before said composition has completely dried off.
• the method of cleaning fabrics comprises the steps of applying the liquid composition herein in its neat form onto said fabrics, or at least soiled portions thereof, and subsequently rinsing, or washing then rinsing said fabrics.
• the neat compositions can optionally be left to act onto said fabrics for a period of time ranging from 1 min. to 1 hour, before the fabrics are rinsed, or washed then rinsed, provided that the composition is not left to dry onto said fabrics.
• stains it may be appropriate to further rub or brush said fabrics by means of a sponge or a brush, or by rubbing two pieces of fabrics against each other.
• the method of cleaning fabrics comprises the steps of diluting the liquid composition herein in its neat form in an aqueous bath so as to form a diluted composition.
• the dilution level of the liquid composition in an aqueous bath is typically up to 1:85, preferably up to 1:50 and more preferably about 1:25 (composition:water).
• the fabrics are then contacted with the aqueous bath comprising the liquid composition, and the fabrics are finally rinsed, or washed then rinsed.
• the fabrics are immersed in the aqueous bath comprising the liquid composition, and also preferably, the fabrics are left to soak therein for a period of time ranging from 1 minute to 48 hours, preferably from 1 hour to 24 hours.
• the liquid composition is used as a so-called laundry additive.
• the aqueous bath is formed by dissolving or dispersing a conventional laundry detergent in water.
• the liquid composition herein in its neat form is contacted with the aqueous bath, and the fabrics are then contacted with the aqueous bath containing the liquid composition. Finally, the fabrics are rinsed.
• compositions are made by combining the listed ingredients in the listed proportions (weight % unless otherwise specified).
• Compositions (weight %) I II III IV V Hydrogen peroxide 5.0 6.0 6.0 3.0 4.0 Na CnAS 3.0 -- 1.0 3.0 3.0 PA 1.0 0.5 0.2 1.5 -- AMCP -- 1.0 2.0 -- 2.0 C8 amine oxide -- 1.0 2.0 -- 2.0 C14 amine oxide -- 1.0 1.0 -- -- C10 amine oxide -- 1.0 -- -- -- -- -- Salicylic Acid 0.3 0.04 0.2 0.06 0.1 HEDP -- -- 0.1 -- 0.05 DETPMP 0.1 0.01 -- 0.03 -- Benzyl alcohol -- 1.0 3.0 -- -- Isopropylalcohol 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Ethoxyl ethanol 2.0 -- -- -- -- -- Butoxy ethanol -- 1.0 -- 2.0 2.0 Propyl Gallate 0.01 0.03 0.1 0.02 0.01 Water Balance Balance Balance Balance Balance Balance Balance Balance up to pH 5 4 5 6 5 Na CnAS is sodium alkyl
• PA is an ethoxylated tetraethylenepentamine, average molecular weight about 70,000.
• AMCP is acrylic/malic based copolymers (Sokalan CP5®).
• HEDP is 1 hydroxy ethylidene 1,1 diphosphonic acid commercially available from Monsanto or Bozzetto DETPMP is diethylene triamine penta methylene phosphonate available under the trade name DEQUEST®.
• compositions (weight%) VI VII VIII IX X XI Hydrogen peroxide 7.0 4.0 7.0 4.0 7.0 1.0 Na CnAS 1.0 2.5 3.0 3.0 2.0 3.0 PA 0.8 1.0 1.0 -- -- 0.9 Salicylic acid 1.0 0.5 1.0 0.5 -- -- Glycine -- -- -- -- 1.0 0.03 DTPA -- -- -- 0.3 0.1 -- 0.01 DETPMP 0.2 0.2 -- -- 0.3 -- Water Balance Balance Balance Balance Balance Balance Balance up to pH 4 6 6 7 6 8 PA is an ethoxylated tetraethylenepentamine, average molecular weight about 70,000.
• DTPA is diethylene triamine pentaacetate.
• DETPMP is diethylene triamine penta methylene phosphonate available under the trade name DEQUEST®.
• Na CnAS is sodium alkyl sulphate.
• compositions XV to XVII above are particularly suitable for laundry application especially laundry pretreatment.
• Dobanol 45-7® is a C14-C15 EO7 nonionic surfactant commercially available from Shell.
• Dobanol 23-3® is a C12-C13 EO3 nonionic surfactant commercially available from Shell.
• PA is an ethoxylated tetraethylenepentamine, average molecular weight about 70,000.
• DTPA is diethylene triamine pentaacetate.
• DETPMP is diethylene triamine penta methylene phosphonate available under the trade name DEQUEST®.

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• 1997
  • 1997-10-03 EP EP97203041A patent/EP0906950A1/de not_active Withdrawn
• 1998
  • 1998-09-25 CA CA002305565A patent/CA2305565A1/en not_active Abandoned
  • 1998-09-25 JP JP2000514980A patent/JP2001519459A/ja not_active Withdrawn
  • 1998-09-25 BR BR9812848-5A patent/BR9812848A/pt not_active IP Right Cessation
  • 1998-09-25 EP EP98942963A patent/EP1021506A1/de not_active Withdrawn
  • 1998-09-25 AU AU90918/98A patent/AU9091898A/en not_active Abandoned
  • 1998-09-25 WO PCT/IB1998/001495 patent/WO1999018180A1/en not_active Application Discontinuation
  • 1998-10-02 AR ARP980104943 patent/AR017290A1/es unknown

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