EP2201092A1 - Granulatförmige waschmittel mit kontrastierenden plättchenförmigen optischen hinweisen - Google Patents

Granulatförmige waschmittel mit kontrastierenden plättchenförmigen optischen hinweisen

Info

Publication number
EP2201092A1
EP2201092A1 EP08804760A EP08804760A EP2201092A1 EP 2201092 A1 EP2201092 A1 EP 2201092A1 EP 08804760 A EP08804760 A EP 08804760A EP 08804760 A EP08804760 A EP 08804760A EP 2201092 A1 EP2201092 A1 EP 2201092A1
Authority
EP
European Patent Office
Prior art keywords
granular detergent
detergent composition
perfume
composition according
visual cues
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.)
Withdrawn
Application number
EP08804760A
Other languages
English (en)
French (fr)
Inventor
Stephen Norman Batchelor
Janette Cutrona
Rudolf Govert Van Driel
Anouschka Susanne Laura Eversdijk
Kees Bert Geerse
Edwin Leo Mario Lempers
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 EP08804760A priority Critical patent/EP2201092A1/de
Publication of EP2201092A1 publication Critical patent/EP2201092A1/de
Withdrawn legal-status Critical Current

Links

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
    • C11D3/50—Perfumes
    • C11D3/502—Protected perfumes
    • C11D3/505—Protected perfumes encapsulated or adsorbed on a carrier, e.g. zeolite or clay
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/02—Floating bodies of detergents or of soaps
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D3/3753—Polyvinylalcohol; Ethers or esters thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/40—Dyes ; Pigments

Definitions

  • This invention relates to granular detergent compositions comprising anionic surfactant and a plurality of contrasting lamellar visual cues, in particular to compositions comprising perfume.
  • the visually contrasting particles may deliver a functional ingredient or may simply provide a visual cue to the user.
  • a minor proportion of contrastingly colored elongated soap particles is added to a detergent powder.
  • the particles comprise a non fabric-substantive dye and fluorescer.
  • the powder comprises a detergency builder compound.
  • the soap particles contribute detergency to the composition and reduce foaming. Because the soap particles could sink onto the fabric it is a stated advantage of the particles that they do not cause staining of the fabric with which they come into contact.
  • a powder detergent composition having a major proportion of white or light-coloured particles has dry mixed into it a minor proportion of lamellar visually contrasting bodies of significantly larger average particle size in at least one dimension than the average particle size of the white or light-coloured particles.
  • the examples used contrasting circular or star shaped bodies made of coloured polymer film.
  • Mixed green and white circle film additives were added at a total level of 0.4 percent and red stars were added at a level of 0.1.
  • the film additives may optionally also contain unspecified amounts of unspecified detergent functional ingredients.
  • WO2006/079416 proposes to use a high solubility film additive as a visual cue. It is suggested to be possible to include unspecified amounts of functional ingredients within the film e.g. surface active agents, perfume, antioxidant, antifoam. Examples in this application compare detergent powders containing 0.1% visual cues made from polyvinyl alcohol lamellae with visual cues made from gum Arabic lamellae. Suitably the film additives could be chosen to pass a 1400 ⁇ m sieve, but not a 500 ⁇ m sieve, thus the cross sectional area of each film additive would be at most about 2 mm 2 .
  • Example 15 comprises glycerol, Sodium Lauryl sulphate, Carboxymethylcellulose, perfume and water. The final film composition is not given. On a solids basis the perfume would be included in the film at a level of 0.18 wt%.
  • EP 1275368A1 discloses addition of a perfume composition to a water soluble polymeric film.
  • the polymer is preferably selected from polyvinyl alcohol, modified polyvinyl alcohol, polyvinylpyrollidone, starch, starch derivatives and modified cellulose.
  • the examples all use large cross sectional areas of perfumed film: 50 cm 2 , 25 cm 2 . There is no suggestion to use the film pieces with a granular detergent composition.
  • EP1614743 discloses that addition of fragrance to laundry via a water soluble film is superior to direct addition of the same fragrance to the laundry detergent.
  • the examples use a single sheet of polymer film with a perfume level of approx 25 wt%.
  • the cross-sectional area of the film used is 113 cm 2 .
  • the examples show an improved perfume effect, in terms of perfume intensity on washed articles, for cellulosic film over polyvinyl alcohol film.
  • An object of the present invention is a granular composition comprising a plurality of lamellar contrasting visual cues that add functionality to the composition.
  • a granular detergent composition comprising anionic surfactant where the fraction [wt% non-ionic surfactant ] / [wt% anionic surfactant] is 0 to 1 comprising a plurality of contrasting lamellar visual cues, each visual cue comprising at least 30 wt% polymer and 0.01 to 50 wt% perfume wherein the cross- sectional area of each visual cue is less than 100 mm 2 .
  • the cross-sectional area should also be greater than 8 mm 2 .
  • the specified range of cross-sectional areas for the lamellar visual cues provides improved perfume intensity. This is most advantageous in wash solutions that contain anionic surfactant and where the fraction [wt% non-ionic surfactant] / [wt% anionic surfactant] is 0 to 1. Thus, the total surfactant ratio of nonionic to anionic in the composition should lie in this range.
  • perfume containing lamellar visual cues of these dimensions also confer the advantage that a wide range of perfumes are stabilised from decomposition by high pH or bleach in the granular composition.
  • Granular laundry powder detergents are mainly composed of surfactants and electrolytes.
  • Typical anionic surfactants include linear alkyl benzene sulphonates, primary alcohol sulphates, linear alcohol ethoxysulphates and typical non- ionic surfactants are alcohol ethoxylates.
  • Typical electrolytes are inorganic materials such as sodium sulphate, sodium chloride, sodium tripolyphosphates, sodium carbonate, silicas, and zeolites and organic materials such as polycarboxylates and citric acid.
  • high performance materials such as fluorescers, shading dyes, enzymes, photobleaches antioxidant and catalysts may be added at low levels to the composition.
  • high performance materials are most cost- effective when added at low levels, typically less than 0.1 wt% of the full composition.
  • the materials are usually granulated and then post-dosed into the composition.
  • a further ingredient that is normally added to commercial laundry compositions is perfume.
  • Laundry products are appreciated by the consumer according to their smell.
  • the smell of the product in the pack, the smell of the washing and water during the washing and drying process and the smell on the clothes after drying have all been the focus of much research and many patents.
  • the smell in use in the wash is usually closely related to the smell in the pack.
  • fragrance is often a key factor in assessing the suitability of a particular laundry product for their needs.
  • the fragrance may be enhanced and modified if it is included within a soluble polymer film that has been cut into discrete pieces having a low surface area of less than 100 mm 2 .
  • the lamellar visual cues may be rendered clearly visible in the powder and in the water by adding to them a dye that gives them a contrasting colour from the granules and by making them have a cross sectional area greater than 8 mm 2 .
  • the lamellar visual cues so formed are desirably dyed and shaped to look like tiny flowers with petals or some other such natural object .
  • Lamellar visual cues are essentially two dimensional particles made from a planar film. They have first and second dimensions larger than detergent granules so they are highly visible.
  • the thickness of the film is preferably less than 0.5mm, more preferably less than 0.3mm and most preferably less than 0.2mm.
  • the film is of relatively uniform thickness to allow predictable dissolution characteristics.
  • the thickness tolerance is preferably at most plus or minus 20%, more preferably plus or minus 10%.
  • the polymer in the lamellar visual cues preferably comprises polyvinyl alcohol.
  • the lamellar visual cues advantageously further comprise 5 to 50 wt% surfactant to enhance their solubility.
  • the surfactant comprises at least 5 wt% anionic surfactant, most preferably an alkyl sulphate.
  • the polymer may be selected from water soluble film forming polymers, especially those used in formulation of detergent powders. Preferred polymers include polymers which dissolve and/disperse completely in water within 30 minutes with agitation at a temperature anywhere in the range of from 293 to 333K.
  • Preferred water soluble polymers are those capable of being cast into a film or solid mass, for example as described in Davidson and Sittig, Water-Soluble Resins, Van Nostrand
  • Preferred water-soluble resins include polyvinyl alcohol, cellulose ethers, polyethylene oxide, starch, polyvinylpyrrolidone, polyacrylamide, polyvinyl methyl ether-maleic anhydride, polymaleic anhydride, styrene maleic anhydride, hydroxyethy1cellulose, hydroxypropylmethy1cellulose, polyethylene glycols, carboxymethylcellulose, polyacrylic acid salts, alginates, acrylamide copolymers, guar gum, casein, ethylene-maleic anhydride resin series, polyethyleneimine, ethyl hydroxyethylcellulose, ethyl methylcellulose, hydroxyethyl methylcellulose, sugars. Lower molecular weight water-soluble, polyvinyl alcohol film- forming resins are preferred.
  • Polyvinyl alcohols preferred for use therein have an average molecular weight anywhere between 1,000 and 1,000,000, preferably between 5,000 and 250,000, for example between 15,000 and 150,000.
  • Hydrolysis, or alcoholysis is defined as the percent completion of the reaction where acetate groups on the resin are substituted with hydroxyl, -OH, groups,
  • a hydrolysis range of from 60-99% of polyvinyl alcohol film-forming resin is preferred, while a more preferred range of hydrolysis is from about 70-90% for water-soluble, polyvinyl alcohol film-forming resins. The most preferred range of hydrolysis is 80-89%.
  • polyvinyl alcohol includes polyvinyl acetate compounds with levels of hydroloysis disclosed herein.
  • Another suitable polymer is a polyvinyl alcohol film, made of a polyvinyl alcohol copolymer having a comonomer having a carboxylate function.
  • the preferred grade of PVA picks up water only at an RH well above that of granular detergent compositions. Thereby, it protects the other film ingredients from decomposition by water and soluble dyes from bleeding.
  • the visual cue film particle may comprise 10 to 80% polymer or polymer mixture.
  • the surfactant is preferably an anionic surfactant, especially if the granular composition comprises a builder.
  • Suitable anionic surfactants include are well-known to those skilled in the art.
  • Examples of high-foaming sulphonate or sulphate type surfactants include alkylbenzene sulphonates, particularly linear alkylbenzene sulphonates having an alkyl chain length of Cs-Ci 5 ; primary and secondary alkylsulphates, particularly Cs-Ci 5 primary alkyl sulphates; olefin sulphonates; alkyl xylene sulphonates; dialkyl sulphosuccinates; and fatty acid ester sulphonates.
  • Sodium salts are generally preferred.
  • the preferred anionic surfactants are alkylbenzene sulphonates, more especially linear alkylbenzene sulphonate (LAS), which is preferably present in an amount of from 12 to 24 wt%, more preferably from 12 to 22 wt% and especially from 15 to 22 wt%.
  • LAS linear alkylbenzene sulphonate
  • PES primary alcohol sulphates
  • Cs-Cis particularly C12-C15
  • a particularly preferred surfactant is primary alcohol sulphate (PAS) with a carbon chain length of 12. Visual cue Film particles containing up to 50 % PAS, may be used.
  • the film may additionally include a second surfactant.
  • the second surfactant is preferably chosen from amphoteric surfactants, zwitterionic surfactants, nonionic surfactants and ethoxylated anionic surfactants.
  • Preferred amphoteric second surfactants are amine oxides.
  • the most preferred amine oxide is coco dimethylamine oxide.
  • Preferred zwitterionic second surfactants are betaines, and especially amidobetaines, for example, coco amidopropyl betaine .
  • Preferred nonionic second surfactants include the primary and secondary alcohol ethoxylates, especially the C8-C20 aliphatic alcohols ethoxylated with an average of from 1 to 20 moles of ethylene oxide per mole of alcohol, and more especially the C10-C15 primary and secondary aliphatic alcohols ethoxylated with an average of from 1 to 10 moles of ethylene oxide per mole of alcohol.
  • Preferred ethoxylated anionic second surfactants include alkyl ether sulphates (ethoxylated alcohol sulphates) .
  • Cs-Cis alkyl monoethanolamides for example, coco monoethanolamide .
  • the second surfactant system used in the film particle may additionally comprise minor amounts, e.g. less than 5% of the film, of cationic surfactant.
  • Surfactant may be included at a level of up to 90 wt%, preferably up to 75 wt%, most preferably up to 60 wt% in the film.
  • Non fabric-substantive colorants may be included in the film composition at a level of 0.001 to 0.5 wt%, preferably 0.1 to 0.03. Suitable colorants include any that are used to colour detergent liquids or powders. Yellow, blue, violet, purple, red, lilac, orange, green, pink are preferred colours.
  • the lamellar visual cues may further comprise optional additional benefit ingredients at a level of 0.001 to 20%, selected from shading dyes, photobleach, fluorescer, antioxidant, enzymes, dye transfer inhibitors, decoupling polymers, sequestrants and bleach catalysts.
  • Preferred additional benefit agents are shading dyes and fluorescer.
  • the compositions comprising a plurality of such lamellar visual cues have the additional advantage of keeping the perfume and optionally other sensitive high performance materials away from the aggressive high pH of the granular components.
  • the granular composition is highly alkaline when dissolved in deionised water (0.1% solution at 25°C is >pH 10.5) . This avoids the need to include any antioxidant or preservative in the film formulation. Such ingredients can interfere with perfume. To achieve such an alkaline pH it is typical that the granular detergent powder comprises significant quantities of silicate and / or carbonate .
  • the lamellar visual cues have a pH of 3 to 9, preferably 6 to 8 when they are separately dissolved to form a 0.1% solution in deionised water. It is particularly desirable that the lamellar visual cues float when first added to water. This enhances the visibility of the visual cues in use, provides a clear cue that the perfume is present and, if the optional further benefit ingredients are present in the film, it can also assist with the reduction of spotting or other fabric damage due to the dissolution of the visual cue taking place on the surface, remote from most of the fabrics being washed.
  • perfume from a wash solution made form a composition comprising a plurality of floating lamellar visual cues of the type claimed also appears to be beneficial.
  • their relative density is less than 0.8, more preferably less than 0.5 and most preferably less than 0.4.
  • the specified lamellar visual cues comprising polymer and perfume are used in compositions which comprise anionic surfactant and where the fraction [wt% non-ionic surfactant ] / [wt% anionic surfactant] is 0 to 1.
  • the fraction [wt% non-ionic surfactant] / [wt% anionic surfactant] is 0 to 0.1, most preferably 0.
  • Linear alkyl benzene sulphonate is the most preferred anionic surfactant.
  • the level of anionic surfactant in the granular composition is preferably between 4 and 60 wt%. More preferably between 6 and 20 wt%.
  • the amount of perfume in the lamellar visual cue is 0.01 to 50 wt%, preferably 0.1 to 40wt% of the visual cue.
  • the perfume is an encapsulated perfume and the amount of perfume encapsulate in the lamellar visual cue is 15 to 40 wt% of the visual cue.
  • perfumes examples include those found in WO2004/111174, WO2004/111171, WO2004/111172 and WO2005/059077.
  • a perfume is not generally a single compound but usually a complex mixture made up of a mix of various fragrance notes.
  • the present invention includes the use of individual compounds (fragrance notes) and complex mixtures.
  • the invention is particularly suited to perfumes that are not stable to high pH or bleach.
  • perfumes which decompose by more than 20% in aqueous solution at pH 11 for 7 days or perfumes which decompose by more than 20% when exposed to aqueous solution containing 2 mM hydrogen peroxide or peracetic acid at pH 11, for 7 days.
  • Percentages refer to loss in concentration in moles per litre. Tests should be performed at 293K with 1 mM perfume.
  • surfactants preferably lg/L Sodium dodecyl sulphate (SDS) , may be used.
  • aldehydic perfumes are: cyclamen aldehyde, hydroxycitronellal, hydrocinnamic aldehyde, lilial, lyral, nonadienal, and phenylacetaldehyde,
  • phenolic containing perfumes are: raspberry ketone, vanillin, ethyl vanillin, 4-propyl-2- methoxyphenol, 4-allyl-2-methoxyphenol, 4-propenyl-2- methoxyphenol, hexyl salicylate, cis-3-hexenyl salicylate, and methyl salicylate.
  • Perfumes are readily available for such firms as: International Flavors and Fragrances (IFF), Firmenich SA and Givaudan .
  • fragrances that may be used with the present invention: Alpha demascone; Delta demascone; Iso E super; Cinnamic aldehyde; Hexylcinnamic aldehyde; Aldehyde butylcinnamic; benzaldehyde; anisique aldehyde; Linalol; Tetrahydrolinalol; Undecavertol; Geraniol; Nerol; Citronellol; citral; Oxyde de Rose; Geranyl acetate; Citronellyl acetate; Coumarine; Linalyl acetate; Geranyl nitrate; Citronellyl nitrile; Cinnamonitrile; Citronitrile; pinane; veloutone; Alpha-methylionone; damascenone; Gamma-terpinene; trifernal; lilial; citronellal ; cyclosal; heliopropanal ;
  • An encapsulated perfume is a perfume that is mixed with a polymeric material to form a particle of maximum dimension of 100 microns.
  • the vapour pressure of the perfume is reduced in the encapsulated particle at 293K and 1 atmosphere pressure.
  • Typical materials used to encapsulate perfumes are modified starches, celluloses, amino-plast-resins and polyacrylates .
  • the lamellar visual cues further comprise 0.1 to 1 wt% of a shading dye or pigment, for fabric whiteness.
  • a shading dye or pigment for fabric whiteness.
  • Such ingredients are compatible with perfume and can be incorporated into the film in the same way as the perfume.
  • the shading dye or pigment is selected from:
  • Pigments Pigments are coloured particles preferably of 0.05 to 10 micron size, which are practically insoluble in aqueous medium that contain surfactants. Preferred pigments are blue or violet.
  • Inorganic pigments such as pigment blue 29 or pigment violet 15 may be used, however, organic pigments are preferred.
  • Preferred organic pigments are pigment violet 1, 1:1, 1:2,
  • More preferred pigments are pigment violet 3, 13, 23, 27, 37, 39, pigment blue 14, 25, 66 and 75.
  • pigment violet 23 The most preferred is pigment violet 23.
  • White pigments may also be used; these are especially suitable if the granular detergent composition is a deep hue, for example green or blue. Suitable White pigments are listed in the color index (Society of Dyers and Colourists and American Association of Textile Chemists and Colorists 2002), pigment white 1 through pigment white 35 may be used to whiten the petal. Preferred are pigment white 18, pigment white 26, pigment white 27, pigment white 6, pigment white 4 and metal stearate salts where the metals are selected from Ba, Ca, Mg or Zn .
  • White pigments are described in detail in ' Industrial Inorganic Pigments' (3rd edition 2005 G.Buxbaum, G.Pfaff eds, Wiley VCH) and include TiO2, zinc white (ZnO), zinc sulfide and lithopone.
  • Direct violet and direct blue dyes are preferred.
  • the dyes are bis or tris - azo dyes.
  • the carcinogenic benzidene based dyes are not preferred.
  • the direct dye is a direct violet of the following structure
  • Ri is hydrogen or alkyl
  • R2 is hydrogen, alkyl or substituted or unsubstituted aryl, preferably phenyl
  • R3 and R4 are independently hydrogen or alkyl
  • n is 0, 1 or 2, preferably 1 or 2.
  • Preferred dyes are direct violet 7, direct violet 9, direct violet 11, direct violet 26, direct violet 31, direct violet
  • the direct dye may be covalently linked to a photobleach, for example as described in WO2006/024612.
  • Cotton substantive acid dyes give benefits to cotton containing garments.
  • Preferred dyes and mixes of dyes are blue or violet.
  • Preferred acid dyes are:
  • R a , R b , R c and R d are selected from: H, a branched or linear Cl to C7-alkyl chain, benzyl, a phenyl, and a naphthyl; the dye is substituted with at least one S ⁇ 3 ⁇ or -COO ⁇ group; the B ring does not carry a negatively charged group or salt thereof; and the A ring may further substituted to form a naphthyl group; the dye is optionally substituted by groups selected from: amine, methyl, ethyl, hydroxyl, methoxy, ethoxy, phenoxy,
  • Preferred azine dyes are: acid blue 98, acid violet 50, and acid blue 59, more preferably acid violet 50 and acid blue 98.
  • the composition may comprise one or more hydrophobic dyes selected from benzodifuranes, methine, triphenylmethanes, napthalimides, pyrazole, napthoquinone, anthraquinone and mono-azo or di-azo dye chromophores .
  • Hydrophobic dyes are dyes that do not contain any charged water solubilising group. Hydrophobic dyes may be selected from the groups of disperse and solvent dyes. Blue and violet anthraquinone and mono-azo dye are preferred.
  • Preferred dyes include solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
  • Basic dyes are organic dyes that carry a net positive charge. They deposit onto cotton. They are of particular utility for used in composition that contain predominantly cationic surfactants. Dyes may be selected from the basic violet and basic blue dyes listed in the colour index. Preferred examples include triarylmethane basic dyes, methane basic dye, anthraquinone basic dyes, basic blue 16, basic blue 65, basic blue 66, basic blue 67, basic blue 71, basic blue 159, basic violet 19, basic violet 35, basic violet 38, basic violet 48; basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141.
  • Blue and violet thiazolium mono-azo dyes may also be used, as described in WO 2007/084729. Reactive dyes
  • Reactive dyes are dyes that contain an organic group capable of reacting with cellulose and linking the dye to cellulose with a covalent bond. They deposit onto cotton.
  • the reactive group is hydrolysed or the dye's reactive group has been reacted with an organic species such as a polymer, so as to the link the dye to this species.
  • Dyes may be selected from the reactive violet and reactive blue dyes listed in the colour index. Examples are
  • Preferred examples include reactive blue 19, reactive blue 163, reactive blue 182 and reactive blue, reactive blue 96.
  • Dye conjugates are formed by binding direct, acid or basic dyes to polymers or particles via physical forces. Dependent on the choice of polymer or particle they deposit on cotton or synthetics. A description is given in WO2006/055787. They are not preferred.
  • the lamellar visual cues contain 0.01 to 1 wt% of a photobleach, in addition to the perfume, for fabric whiteness and cleaning.
  • a photobleach in addition to the perfume, for fabric whiteness and cleaning.
  • Combinations of shading dye and photobleach are particularly preferred.
  • the photobleach can be incorporated at the same time as the other additives; perfume and optional shading dye.
  • Singlet oxygen photo-bleaches are preferred.
  • Singlet oxygen photo-bleaches (PB) function as follows:
  • the photo-bleach molecule absorbs light and attains an electronical excited state, PB*.
  • This electronically excited state is quenched by triplet oxygen, 3 O 2 , in the surroundings to form singlet 1 O 2 .
  • Singlet oxygen is a highly reactive bleach.
  • Suitable singlet oxygen photo-bleaches may be selected from, water soluble phthalocyanine compounds, particularly metallated phthalocyanine compounds where the metal is Zn or Al-Zl where Zl is a halide, sulphate, nitrate, carboxylate, alkanolate or hydroxyl ion.
  • the phthalocyanine has 1-4 SO3X groups covalently bonded to it where X is an alkali metal or ammonium ion.
  • X alkali metal or ammonium ion
  • Xanthene type dyes are preferred, particularly based on the structure :
  • the dye may be substituted by halogens and other elements/groups.
  • Particularly preferred examples are Food Red 14 and Rose Bengal, Phloxin B, Eosin Y.
  • Quantum yields for photosensitized formation of singlet oxygen may be found in J. Phys . Chem.Ref . Data 1993, vol 22, nol ppll3-262. It is preferred if the quantum yield for singlet oxygen formation measured in an organic solvent or D20 is greater than 0.05, more preferably greater than 0.1.
  • singlet oxygen producing compounds include chlorophyll, coumarin, porphyrins, myoglobin, riboflavin, bilirubin, and methylene blue.
  • the lamellar visual cues may further comprise 0.01 to lwt% of a fluorescer, for fabric whiteness.
  • 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 laundry treatment composition is from 0.005 to 2 wt %, more preferably 0.01 to 0.1 wt %.
  • Preferred fluorescers are: sodium 2 (4-styryl-3-sulfophenyl) -2H-napthol [ 1, 2-d] triazole, disodium 4, 4 ' -bis ⁇ [ (4-anilino-6- (N methyl-N-2 hydroxyethyl) amino 1, 3, 5-triazin-2-yl) ] amino ⁇ stilbeno-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-sulfostyryl) biphenyl .
  • the invention will now be further described with reference to the following non-limiting examples.
  • a polymer film containing 33 wt% of a perfume encapsulate (Denali, ex IFF) was made as follows:
  • Two, 10 gram samples of a granular laundry detergent composition were prepared. It contained 18% sodium LAS. 73% salts (silicate, sodium tripolyphosphate, sodium sulphate, sodium carbonate) , remainder impurities water and minors (enzymes and fluorescer) . The powder contained no perfume. The samples were labelled A and B.
  • A was added 0.13g of a perfume encapsulate (Denali, ex IFF) .
  • To B was added 0.4g of the cut perfume film of example 1. Therefore, initially A and B contained identical amount of perfume.
  • the perfume film was cut into rectangles of 5-6 mm by 1-2 mm. The two powders were thoroughly mixed, and the perfume intensity of the powder measured by an assessor .
  • the samples were then stored in open jars in a humidity cabinet at 310K and 70% relative humidity.
  • the perfume odour was monitored by the same assessor over time. Before each assessment, the powder was vigorously shaken to release volatiles .
  • A has initial a much higher and more intricate smell then B, shown by the higher score and more descriptors (in italics) .
  • B gains a higher score and has a more intricate smell.
  • Inclusion of the perfume in the film provided the granular composition with an improved perfume effect.
  • the perfume film of example 1 was cut into samples of different size:
  • the odours of the liquid solutions were assessed immediately and after standing for 4 minutes at 293K. Perfume intensity measured on a scale 0 (none) to 5 (high) .
  • the smaller maximum cross-sectional area film, D gives much more perfume over the wash liquor, than the larger cross-sectional area film C. More perfume is detected from the LAS containing formulations and most from the nonionic free formulation .
  • Example 1 0.15 grams of the perfume film of Example 1 was added to 5 grams of the washing powder of Example 2. Four samples were made with the same total area of perfume film cut into rectangles of different individual cross-sectional areas. 120 ml of demineralised water was added to the powder, and the solution shaken for 1 minute. The odour of the wash liquor was assessed three times within 5 minutes. Perfume intensity measured on a scale 0 (none) to 5 (high) . The results are shown in table 3. Table 3
  • the perfume film of example 1 was cut into samples of different size:
  • the total weight of film added to the LAS solution was 0.048g.
  • the total weight of film added to the LAS:NI solution was 0.042g.
  • the total weight of film added to the NI solution was 0.046g.
  • the weight of perfume encaps added via the film was O.Ol ⁇ g at maximum.
  • the odours of the liquid solutions were assessed immediately and after standing for 4 minutes at 293K. Initially the odour of the wash liquors were
  • the lamellar visual cue has a cross-sectional area of 10 to 20 mm 2 and a film composition consisting of primary alkyl sulphate surfactant and polyvinyl alcohol polymer.
  • the quantity given in this line includes the minor quantities of benefit ingredients included in the film particle and identified separately by "(visual cue)".
  • 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.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
EP08804760A 2007-10-12 2008-09-25 Granulatförmige waschmittel mit kontrastierenden plättchenförmigen optischen hinweisen Withdrawn EP2201092A1 (de)

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PCT/EP2008/062875 WO2009047127A1 (en) 2007-10-12 2008-09-25 Granular detergent compositions with contrasting lamellar visual cues

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