EP2252680A1 - Laundry treatment composition comprising polymeric lubricants - Google Patents

Laundry treatment composition comprising polymeric lubricants

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Publication number
EP2252680A1
EP2252680A1 EP09719383A EP09719383A EP2252680A1 EP 2252680 A1 EP2252680 A1 EP 2252680A1 EP 09719383 A EP09719383 A EP 09719383A EP 09719383 A EP09719383 A EP 09719383A EP 2252680 A1 EP2252680 A1 EP 2252680A1
Authority
EP
European Patent Office
Prior art keywords
laundry treatment
treatment composition
polyolefin
polyolefin particle
composition according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09719383A
Other languages
German (de)
French (fr)
Other versions
EP2252680B1 (en
Inventor
Stephen Norman Batchelor
Andrew Philip Parker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP09719383A priority Critical patent/EP2252680B1/en
Publication of EP2252680A1 publication Critical patent/EP2252680A1/en
Application granted granted Critical
Publication of EP2252680B1 publication Critical patent/EP2252680B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C11D3/3749—Polyolefins; Halogenated polyolefins; Natural or synthetic rubber; Polyarylolefins or halogenated polyarylolefins

Definitions

  • the present invention relates to wash added, fabric care compos itions and methods for us ing the same during the wash cycle of a consumer laundry proces s .
  • EP 1 478 720 (Procter & Gamble) discloses the use of dispersible polyolefin waxes in detergent formulations with mean particle sizes from 5nm to 5 microns.
  • polyolefin particles larger than described in the prior art provide improved colour care. Further these larger polyolefin particles are easier to incorporate into a detergent composition because they do not need to be pre-dispersed before dosing.
  • the present invention provides a granular laundry treatment composition containing less than 1 wt . % of phosphate comprising: (i) from 0.2 wt . % to 4 wt . % of a polyolefin particle, the polyolefin particle having a size in the range from 25 to 5000 microns;
  • a second aspect of the invention provides a domestic method of treating a textile, the method comprising the steps of:
  • the amount of components in the granular laundry treatment composition quoted herein are wt . % of total composition unless otherwise stated.
  • the polyolefin particle should not dissolve in water or surfactant solutions. Such that when lg/L of particles are placed into an aqueous solution containing 2g/L of sodium dodecyl sulphate at room temperature and shaken at 100 RPM on a rotator shaker at 293K for 2 hours, then removed from solution by filtering through a sieve or filter paper of appropriate size and dried. The weight of the particle removed is within 95 more preferably 99% of that added.
  • the polyolefin particle should have a weight average molecular weight in excess of 2000, more preferably in excess of 10000.
  • the weight average molecular weight may be measured by vapour phase osmometry or cryoscopy.
  • the polyolefin particle has an acid number from about 0 to 200 mg/g KOH and preferably from about 0 to 4 mg/g KOH
  • the particles are spherical or elliptical in cross-section.
  • the particles are white, such that when their colour is measured using a reflectometer (UV excluded) and expressed as CIE L*a*b* values, L*>70, a* is between -3 and +3 and b* is between 5 and -10.
  • the density of the particle is preferably 0.85 to 1.1 g/cm 3 , more preferably 0.95 to 1.05 g/cm 3 .
  • polyolefin particle is selected from:
  • the polyolefin particle is a polyethylene .
  • the size of the polyolefin particle is measured using graded sieves and it is that that is retained or passes through such sieves .
  • the polyolefin particle is sized preferably from 50 to 2500 microns .
  • An advantage over the disclosure of EP 1 478 720 is that the use of a larger particle size provides ease of incorporation of the polyolefin particle into the composition, i.e., the particle may be added directly rather than via a suspension, dispersion, or an emulsion of polyolefin wax.
  • the granular laundry treatment composition can be provided by post-dosed addition of polyolefin particles.
  • Another advantage is that larger particles are much less likely to become airborne during handling or sniffing and consequently less likely to be inhaled.
  • the composition comprises between 2 to 70 wt . % of a surfactant, most preferably 10 to 30 wt . % .
  • a surfactant most preferably 10 to 30 wt . % .
  • the nonionic and anionic surfactants of the surfactant system may be chosen from the surfactants described "Surface Active Agents" Vol. 1, by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon ' s Emulsifiers and Detergents” published by Manufacturing Confectioners Company or in "Tenside-Taschenbuch” , H. Stache, 2nd Edn., Carl Hauser Verlag, 1981.
  • the surfactants used are saturated.
  • Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nonionic detergent compounds are Ce to C22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic Cs to Cis primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
  • Suitable anionic detergent compounds which may be used are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
  • suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher Cs to Cis alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl Cg to C20 benzene sulphonates, particularly sodium linear secondary alkyl Cio to Ci 5 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
  • the preferred anionic detergent compounds are sodium Cu to Ci 5 alkyl benzene sulphonates and sodium C12 to Cis alkyl sulphates.
  • surfactants such as those described in EP-A-328 177 (Unilever) , which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074, and alkyl monoglycosides .
  • Preferred surfactant systems are mixtures of anionic with nonionic detergent active materials, in particular the groups and examples of anionic and nonionic surfactants pointed out in EP-A-346 995 (Unilever) .
  • surfactant system that is a mixture of an alkali metal salt of a C ⁇ ⁇ to Cis primary alcohol sulphate together with a C12 to Ci 5 primary alcohol 3 to 7 EO ethoxylate .
  • the nonionic detergent is preferably present in amounts greater than 10%, e.g. 25 to 90 wt . % of the surfactant system.
  • Anionic surfactants can be present for example in amounts in the range from about 5 wt . % to about 40 wt . % of the surfactant system.
  • the composition comprises from 1 to 50 wt . % of a builder.
  • Builder materials may be selected from 1) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
  • an insoluble inorganic builder e.g., zeolite
  • the size is in the range 0.1 to 10 microns (as measured by The Mastersizer 2000 particle size analyzer using laser diffraction ex MalvernTM) .
  • calcium sequestrant builder materials include alkali metal polyphosphates, such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetra- acetic acid.
  • precipitating builder materials examples include sodium orthophosphate and sodium carbonate.
  • Examples of calcium ion-exchange builder materials include the various types of water-insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P) , zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-O, 384, 070.
  • zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P) , zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-O, 384, 070.
  • the composition may also contain 0-50 wt . % of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below. Many builders are also bleach- stabilising agents by virtue of their ability to complex metal ions.
  • a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below.
  • Many builders are also bleach- stabilising agents by virtue of their ability to complex metal ions.
  • Zeolite and carbonate are preferred builders.
  • the composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt . % .
  • Aluminosilicates are materials having the general formula: 0 . 8 - 1 . 5 M 2 O . Al 2 O 3 . 0 . 8 - 6 S iO 2
  • M is a monovalent cation, preferably sodium.
  • M a monovalent cation, preferably sodium.
  • These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
  • the preferred sodium aluminosilicates contain 1.5-3.5 SiO 2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
  • the ratio of surfactants to aluminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1.
  • phosphate builders may be used.
  • ⁇ phosphate' embraces diphosphate, triphosphate, and phosphonate species.
  • the formulation comprises less than 1 wt . % of such phosphate builders.
  • the laundry detergent formulation is free from phosphate builders.
  • builder examples include silicates, such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst) .
  • silicates such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst) .
  • the granular laundry treatment composition preferably comprises a blue or violet shading agent in the range from 0.0001 to 0.01 wt . % .
  • the shading agents reduce the perception of damage to many coloured garments and increase whiteness of white garments.
  • the shading agents are preferably selected from blue and violet dyes of the solvent disperse basic, direct and acid type listed in the colour index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists 2002) .
  • a direct violet or direct blue dyes is present.
  • the dyes are bis-azo, tris-azo dyes or triphendioxazine dye.
  • the carcinogenic benzidene based dyes are not preferred.
  • Bis-azo copper containing dyes such as direct violet 66 may be used.
  • the most preferred bis-azo dyes have the following structure :
  • ring D and E may be independently naphthyl or phenyl as shown;
  • Ri is selected from: hydrogen and Cl-C4-alkyl, preferably hydrogen;
  • R2 is selected from: hydrogen, Cl-C4-alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl, preferably phenyl;
  • R 3 and R 4 are independently selected from: hydrogen and Cl- C4-alkyl, preferably hydrogen or methyl;
  • Preferred bis-azo dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, and direct violet 99.
  • Preferred solvent and disperse dyes are selected from, mono-azo or anthraquinone dyes, most preferably, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
  • a preferred pigment is pigment violet 23.
  • the granular laundry treatment composition preferably comprises one or more enzymes which provide cleaning performance and/or fabric care benefits.
  • suitable enzymes include, but are not limited to, hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases, - lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof.
  • a typical combination is an enzyme cocktail that may comprise, for example, a protease and lipase in conjunction with amylase.
  • the aforementioned additional enzymes may be present at levels from about 0.00001 wt . % to about 2 wt. %, from about 0.0001 wt . % to about 1 wt . % or even from about 0.001 wt .% to about 0.5 wt . % enzyme protein by weight of the composition.
  • Preferred enzymes are cellulases. FLUORESCENT AGENT
  • the composition preferably comprises a fluorescent agent (optical brightener) .
  • fluorescent agents are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
  • the total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt. %, more preferably 0.01 to 0.1 wt . % .
  • Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Di-amine stilbene di-sulphonic acid compounds, e.g.
  • Preferred fluorescers are: sodium 2- (4-styryl-3- sulfophenyl) -2H-napthol [ 1 , 2-d] trazole, disodium 4,4'- bis ⁇ [ (4-anilino-6- (N methyl-N-2 hydroxyethyl) amino 1,3,5- triazin-2-yl) ] amino ⁇ stilbene-2-2 ' disulfonate, disodium
  • the composition comprises a perfume.
  • the perfume is preferably in the range from 0.001 to 3 wt.%, most preferably 0.1 to 1 wt.%.
  • CTFA Cosmetic, Toiletry and Fragrance Association
  • Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
  • compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
  • top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2) : 80 [1955]) .
  • Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol .
  • Perfume and top note may be used to cue the fabric care benefit of the invention.
  • the laundry treatment composition does not contain a peroxygen bleach, e.g., sodium percarbonate, sodium perborate, and peracid.
  • a peroxygen bleach e.g., sodium percarbonate, sodium perborate, and peracid.
  • the composition may comprise one or more polymers.
  • polymers are carboxymethylcellulose, poly (ethylene glycol), poly (vinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.
  • Polymers present to prevent dye deposition for example poly (vinylpyrrolidone) , poly (vinylpyridine-N-oxide) , and poly (vinylimidazole) , are preferably absent from the formulation .
  • the reflectances of the VAT Blue cloths at 430nm and the Reactive Orange cloths at 650nm were measured on a Murakami Goniospectrophotometer with an incident angle of 65° and a measurement angle of 55°.
  • the reflectance of the new cloths was 27.20 for the Vat Blue and 65.13 for the reactive Orange.
  • the ⁇ R (powder control) for Vat Blue was 6.06 and for Reactive Orange was 5.36. In the results the average ⁇ R between the blue and orange cloths is given to 1 decimal place.
  • the polyethylene particles are effective across a wide range of dosages.
  • NI (7EO) refers to R- (OCH 2 CH 2 ) n 0H, where R is an alkyl chain of C12 to C15, and n is 7.
  • the formulations are prepared by adding direct violet 9, acid violet 7 and the Sulfonated Zn Pthalocyanine photobleach into the slurry which is then spray dried.
  • the dyes and photobleach may be added via post-dosed MgSO 4 granules.
  • the solvent violet 13 was dissolved in non-ionic surfactant (7EO) and granulated onto bentonite clay, to give a granule containing 0.2 wt . % dye. This was post-dosed to the formulation .
  • the Licowax PE520P particles were post dosed to the formulation .

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Abstract

Wash added fabric care compositions including a polyolefin particle are described, more particularly granular detergent compositions including polyolefin particles. A method for applying these compositions during the wash cycle of a laundry process is also included.

Description

LAUNDRY TREATMENT COMPOSITION COMPRISING POLYMERIC LUBRICANTS
FIELD OF INVENTION
The present invention relates to wash added, fabric care compos itions and methods for us ing the same during the wash cycle of a consumer laundry proces s .
BACKGROUND
Coloured clothes are extremely popular with consumers. To remove dirt on washing, the clothes are vigorously agitated in water with a washing formulation. This process leads to damage on the surface of the clothes, which reduces their aesthetic appeal.
EP 1 478 720 (Procter & Gamble) discloses the use of dispersible polyolefin waxes in detergent formulations with mean particle sizes from 5nm to 5 microns.
SUMMARY OF INVENTION
We have found that using polyolefin particles larger than described in the prior art provide improved colour care. Further these larger polyolefin particles are easier to incorporate into a detergent composition because they do not need to be pre-dispersed before dosing.
In one aspect the present invention provides a granular laundry treatment composition containing less than 1 wt . % of phosphate comprising: (i) from 0.2 wt . % to 4 wt . % of a polyolefin particle, the polyolefin particle having a size in the range from 25 to 5000 microns;
(ii) from 2 to 70 wt . % of a surfactant; and, (iϋ) from 1 to 50 wt . % of a builder.
A second aspect of the invention provides a domestic method of treating a textile, the method comprising the steps of:
(i) treating a textile with an aqueous solution of from 1 to 20 g/1 of the composition of the first aspect; and, (ii) rinsing and drying the textile.
DETAILED DESCRIPTION OF THE INVENTION
The amount of components in the granular laundry treatment composition quoted herein are wt . % of total composition unless otherwise stated.
The polyolefin particle should not dissolve in water or surfactant solutions. Such that when lg/L of particles are placed into an aqueous solution containing 2g/L of sodium dodecyl sulphate at room temperature and shaken at 100 RPM on a rotator shaker at 293K for 2 hours, then removed from solution by filtering through a sieve or filter paper of appropriate size and dried. The weight of the particle removed is within 95 more preferably 99% of that added.
The polyolefin particle should have a weight average molecular weight in excess of 2000, more preferably in excess of 10000. The weight average molecular weight may be measured by vapour phase osmometry or cryoscopy.
The polyolefin particle has an acid number from about 0 to 200 mg/g KOH and preferably from about 0 to 4 mg/g KOH
(wherein the acid number indicates the mg of KOH needed to neutralize 1 g of polyolefin) . Preferably the particles are spherical or elliptical in cross-section.
Preferably the particles are white, such that when their colour is measured using a reflectometer (UV excluded) and expressed as CIE L*a*b* values, L*>70, a* is between -3 and +3 and b* is between 5 and -10.
The density of the particle is preferably 0.85 to 1.1 g/cm3, more preferably 0.95 to 1.05 g/cm3.
More preferably the polyolefin particle is selected from:
(a) polyethylenes :
(b) polypropylenes :
It is most preferred that the polyolefin particle is a polyethylene . The size of the polyolefin particle is measured using graded sieves and it is that that is retained or passes through such sieves .
The polyolefin particle is sized preferably from 50 to 2500 microns .
An advantage over the disclosure of EP 1 478 720 is that the use of a larger particle size provides ease of incorporation of the polyolefin particle into the composition, i.e., the particle may be added directly rather than via a suspension, dispersion, or an emulsion of polyolefin wax. Thus the granular laundry treatment composition can be provided by post-dosed addition of polyolefin particles. Another advantage is that larger particles are much less likely to become airborne during handling or sniffing and consequently less likely to be inhaled.
SURFACTANT
The composition comprises between 2 to 70 wt . % of a surfactant, most preferably 10 to 30 wt . % . In general, the nonionic and anionic surfactants of the surfactant system may be chosen from the surfactants described "Surface Active Agents" Vol. 1, by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon ' s Emulsifiers and Detergents" published by Manufacturing Confectioners Company or in "Tenside-Taschenbuch" , H. Stache, 2nd Edn., Carl Hauser Verlag, 1981. Preferably the surfactants used are saturated. Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic detergent compounds are Ce to C22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic Cs to Cis primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
Suitable anionic detergent compounds which may be used are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals. Examples of suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher Cs to Cis alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl Cg to C20 benzene sulphonates, particularly sodium linear secondary alkyl Cio to Ci5 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum. The preferred anionic detergent compounds are sodium Cu to Ci5 alkyl benzene sulphonates and sodium C12 to Cis alkyl sulphates. Also applicable are surfactants such as those described in EP-A-328 177 (Unilever) , which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074, and alkyl monoglycosides .
Preferred surfactant systems are mixtures of anionic with nonionic detergent active materials, in particular the groups and examples of anionic and nonionic surfactants pointed out in EP-A-346 995 (Unilever) . Especially preferred is surfactant system that is a mixture of an alkali metal salt of a C±β to Cis primary alcohol sulphate together with a C12 to Ci5 primary alcohol 3 to 7 EO ethoxylate .
The nonionic detergent is preferably present in amounts greater than 10%, e.g. 25 to 90 wt . % of the surfactant system. Anionic surfactants can be present for example in amounts in the range from about 5 wt . % to about 40 wt . % of the surfactant system.
BUILDERS OR COMPLEXING AGENTS
The composition comprises from 1 to 50 wt . % of a builder.
Builder materials may be selected from 1) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
It is preferred that when an insoluble inorganic builder, e.g., zeolite, is used the size is in the range 0.1 to 10 microns (as measured by The Mastersizer 2000 particle size analyzer using laser diffraction ex Malvern™) . Examples of calcium sequestrant builder materials include alkali metal polyphosphates, such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetra- acetic acid.
Examples of precipitating builder materials include sodium orthophosphate and sodium carbonate.
Examples of calcium ion-exchange builder materials include the various types of water-insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives, e.g. zeolite A, zeolite B (also known as zeolite P) , zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-O, 384, 070.
The composition may also contain 0-50 wt . % of a builder or complexing agent such as ethylenediaminetetraacetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid or the other builders mentioned below. Many builders are also bleach- stabilising agents by virtue of their ability to complex metal ions.
Zeolite and carbonate (carbonate (including bicarbonate and sesquicarbonate) are preferred builders.
The composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt . % . Aluminosilicates are materials having the general formula: 0 . 8 - 1 . 5 M2O . Al2O3 . 0 . 8 - 6 S iO2
where M is a monovalent cation, preferably sodium. These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g. The preferred sodium aluminosilicates contain 1.5-3.5 SiO2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature. The ratio of surfactants to aluminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1.
Alternatively, or additionally to the aluminosilicate builders, phosphate builders may be used. In this art the term λphosphate' embraces diphosphate, triphosphate, and phosphonate species. However, the formulation comprises less than 1 wt . % of such phosphate builders. Preferably the laundry detergent formulation is free from phosphate builders.
Other forms of builder include silicates, such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst) .
We have also found that the presence of an inorganic builder in particular a zeolite, (insoluble inorganic particulates) contributes to the abrasion of fabrics under wash conditions. The use of the larger polyolefin particles ameliorate this problem. SHADING AGENT
The granular laundry treatment composition preferably comprises a blue or violet shading agent in the range from 0.0001 to 0.01 wt . % . The shading agents reduce the perception of damage to many coloured garments and increase whiteness of white garments.
The shading agents are preferably selected from blue and violet dyes of the solvent disperse basic, direct and acid type listed in the colour index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists 2002) .
Preferably a direct violet or direct blue dyes is present. Preferably the dyes are bis-azo, tris-azo dyes or triphendioxazine dye. The carcinogenic benzidene based dyes are not preferred.
Bis-azo copper containing dyes such as direct violet 66 may be used.
The most preferred bis-azo dyes have the following structure :
or
R^2
wherein : ring D and E may be independently naphthyl or phenyl as shown;
Ri is selected from: hydrogen and Cl-C4-alkyl, preferably hydrogen;
R2 is selected from: hydrogen, Cl-C4-alkyl, substituted or unsubstituted phenyl and substituted or unsubstituted naphthyl, preferably phenyl;
R3 and R4 are independently selected from: hydrogen and Cl- C4-alkyl, preferably hydrogen or methyl;
X and Y are independently selected from: hydrogen, C1-C4- alkyl and Cl-C4-alkoxy; preferably the dye has X= methyl; and, Y = methoxy and n is 0, 1 or 2, preferably 1 or 2.
Preferred bis-azo dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet 35, direct violet 40, direct violet 41, direct violet 51, and direct violet 99.
Preferred solvent and disperse dyes, are selected from, mono-azo or anthraquinone dyes, most preferably, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
A preferred pigment is pigment violet 23.
ENZYMES
The granular laundry treatment composition preferably comprises one or more enzymes which provide cleaning performance and/or fabric care benefits. Examples of suitable enzymes include, but are not limited to, hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases, - lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof. A typical combination is an enzyme cocktail that may comprise, for example, a protease and lipase in conjunction with amylase. When present in a cleaning composition, the aforementioned additional enzymes may be present at levels from about 0.00001 wt . % to about 2 wt. %, from about 0.0001 wt . % to about 1 wt . % or even from about 0.001 wt .% to about 0.5 wt . % enzyme protein by weight of the composition.
Preferred enzymes are cellulases. FLUORESCENT AGENT
The composition preferably comprises a fluorescent agent (optical brightener) . Fluorescent agents are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts. The total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt. %, more preferably 0.01 to 0.1 wt . % . Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Di-amine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and Pyrazoline compounds, e.g. Blankophor SN. Preferred fluorescers are: sodium 2- (4-styryl-3- sulfophenyl) -2H-napthol [ 1 , 2-d] trazole, disodium 4,4'- bis { [ (4-anilino-6- (N methyl-N-2 hydroxyethyl) amino 1,3,5- triazin-2-yl) ] amino } stilbene-2-2 ' disulfonate, disodium
4, 4 ' -bis { [ (4-anilino-6-morpholino-l, 3,5-triazin-2-yl) ] amino } stilbene-2-2' disulfonate, and disodium 4, 4 '-bis (2- sulfoslyryl) biphenyl .
PERFUME
Preferably the composition comprises a perfume. The perfume is preferably in the range from 0.001 to 3 wt.%, most preferably 0.1 to 1 wt.%. Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
It is commonplace for a plurality of perfume components to be present in a formulation. In the compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
In perfume mixtures preferably 15 to 25 wt . % are top notes. Top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2) : 80 [1955]) . Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol .
Perfume and top note may be used to cue the fabric care benefit of the invention.
It is preferred that the laundry treatment composition does not contain a peroxygen bleach, e.g., sodium percarbonate, sodium perborate, and peracid.
POLYMERS
The composition may comprise one or more polymers. Examples are carboxymethylcellulose, poly (ethylene glycol), poly (vinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers. Polymers present to prevent dye deposition, for example poly (vinylpyrrolidone) , poly (vinylpyridine-N-oxide) , and poly (vinylimidazole) , are preferably absent from the formulation .
Experimental
Example 1
Three knitted cotton fabric swatches (20 by 20 cm) dyed with Vat Blue 4 were washed in a compartment of a Quickwash Plus ™ fabric testing system (SDL international) . In a separate compartment equivalent knitted cotton swatches were placed, but these were dyes with Reactive Orange 16. The machine was filled with 3.5 litres of 26° French Hard water and 24.5 g of Persil Colour Powder (ex UK) a Las/Non-ionic surfactant powder built with zeolite and carbonate. To this was added 0.5g of antifoam. The wash took 15 minutes, and following this the machine was drained, spun, and then three 90 second rinses performed, draining and spinning after each. Following the wash the fabric was tumble dried. The procedure was repeated 5 times. The whole experiment was then repeated but with the addition of lg/L of various additives .
Following the washes the reflectances of the VAT Blue cloths at 430nm and the Reactive Orange cloths at 650nm were measured on a Murakami Goniospectrophotometer with an incident angle of 65° and a measurement angle of 55°. The reflectance of the new cloths was 27.20 for the Vat Blue and 65.13 for the reactive Orange. The reflectance was compare to the reflectance of new unwashed fabric, and expressed as ΔR = I R (new) - R (washed) | . The ΔR (powder control) for Vat Blue was 6.06 and for Reactive Orange was 5.36. In the results the average ΔR between the blue and orange cloths is given to 1 decimal place.
The results are shown in table 1.
Table 1
particle size measured by SEM of commercial sample use in experiment .
The large organic polymer particles maintain the cloth closer to the new, as indicated by smaller ΔRaverage values. Example 2
The experiment of example 1 was repeated using different levels of Licowax PE520P. The results are shown in the table below for the Vat Blue dyes cloth.
The polyethylene particles are effective across a wide range of dosages.
- I i
Example 3
Exemplary Granular Laundry Formulations A, B, C, D
Enzyme levels are given as percent pure enzyme. Levels of direct violet 9, solvent violet 13 and Sulfonated Zn Pthalocyanine photobleach are given as pure dye. NI (7EO) refers to R- (OCH2CH2) n0H, where R is an alkyl chain of C12 to C15, and n is 7.
The formulations are prepared by adding direct violet 9, acid violet 7 and the Sulfonated Zn Pthalocyanine photobleach into the slurry which is then spray dried. Alternatively, the dyes and photobleach may be added via post-dosed MgSO4 granules.
The solvent violet 13 was dissolved in non-ionic surfactant (7EO) and granulated onto bentonite clay, to give a granule containing 0.2 wt . % dye. This was post-dosed to the formulation .
The Licowax PE520P particles were post dosed to the formulation .

Claims

1. A granular laundry treatment composition containing less than 1 wt . % of phosphate comprising:
(i) from 0.2 wt % to 4 wt . % of a polyolefin particle, the polyolefin particle having a size in the range from 25 to 5000 microns; (ii) from 2 to 70 wt . % of a surfactant; and,
(iii) from 1 to 50 wt . % of a builder.
2. A granular laundry treatment composition according to claim 1, wherein the polyolefin particle has a size in the range from 50 to 2500 microns.
3. A granular laundry treatment composition according to claim 1 or claim 2, wherein the polyolefin particle is polyethylene .
4. A granular laundry treatment composition according to any preceding claim, wherein the polyolefin particle has been added to the laundry treatment composition as post dosed particles of polyolefin particle.
5. A granular laundry treatment composition according to any preceding claim, wherein the builder comprises zeolite, the zeolite having a size in the range from 0.1 to 10 microns.
6. A granular laundry treatment composition according to any preceding claim, wherein the laundry treatment composition comprises a blue or violet shading agent in the range from 0.0001 to 0.01 wt . % .
7. A granular laundry treatment composition according to any preceding claim, wherein the laundry treatment composition comprises one or more enzymes, at a level of from about 0.00001 wt . % to about 2 wt.%, preferably the enzyme is a cellulase.
8. A domestic method of treating a textile, comprising the steps of:
(i) treating a textile with an aqueous solution of from 1 to 20 g/1 of the composition of any one of claims 1 to 7; and, (ii) rinsing and drying the textile.
EP09719383A 2008-03-14 2009-01-22 Laundry treatment composition comprising polymeric lubricants Not-in-force EP2252680B1 (en)

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PCT/EP2009/050700 WO2009112298A1 (en) 2008-03-14 2009-01-22 Laundry treatment composition comprising polymeric lubricants
EP09719383A EP2252680B1 (en) 2008-03-14 2009-01-22 Laundry treatment composition comprising polymeric lubricants

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BRPI0909346A2 (en) 2016-07-05
ZA201005759B (en) 2011-10-26
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