EP3415591B1 - Wasserlöslicher einheitsdosierartikel mit einem festen waschmittel - Google Patents
Wasserlöslicher einheitsdosierartikel mit einem festen waschmittel Download PDFInfo
- Publication number
- EP3415591B1 EP3415591B1 EP17176195.0A EP17176195A EP3415591B1 EP 3415591 B1 EP3415591 B1 EP 3415591B1 EP 17176195 A EP17176195 A EP 17176195A EP 3415591 B1 EP3415591 B1 EP 3415591B1
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- EP
- European Patent Office
- Prior art keywords
- water
- detergent composition
- laundry detergent
- unit dose
- dose article
- Prior art date
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- 230000005012 migration Effects 0.000 description 1
- DFPMSGMNTNDNHN-ZPHOTFPESA-N naringin Chemical compound O[C@@H]1[C@H](O)[C@@H](O)[C@H](C)O[C@H]1O[C@H]1[C@H](OC=2C=C3O[C@@H](CC(=O)C3=C(O)C=2)C=2C=CC(O)=CC=2)O[C@H](CO)[C@@H](O)[C@@H]1O DFPMSGMNTNDNHN-ZPHOTFPESA-N 0.000 description 1
- 229940052490 naringin Drugs 0.000 description 1
- 229930019673 naringin Natural products 0.000 description 1
- 229920001206 natural gum Polymers 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000002895 organic esters Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- QQBPIHBUCMDKFG-UHFFFAOYSA-N phenazopyridine hydrochloride Chemical group Cl.NC1=NC(N)=CC=C1N=NC1=CC=CC=C1 QQBPIHBUCMDKFG-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- PTMHPRAIXMAOOB-UHFFFAOYSA-L phosphoramidate Chemical compound NP([O-])([O-])=O PTMHPRAIXMAOOB-UHFFFAOYSA-L 0.000 description 1
- 239000001007 phthalocyanine dye Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920001308 poly(aminoacid) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229960001811 quinine hydrochloride Drugs 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 230000015227 regulation of liquid surface tension Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229940013883 sucrose octaacetate Drugs 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical group CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 1
- 150000004961 triphenylmethanes Chemical class 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
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
- C11D3/40—Dyes ; Pigments
- C11D3/42—Brightening agents ; Blueing agents
-
- 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
- C11D17/044—Solid 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
- C11D17/04—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
- C11D17/045—Multi-compartment
-
- 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
- C11D3/0047—Other compounding ingredients characterised by their effect pH regulated compositions
Definitions
- the present invention relates to water-soluble unit dose articles containing solid laundry detergent compositions and methods of using them.
- Water-soluble laundry unit dose articles are known and are liked by consumers due to their ease and efficiency of use in the laundry operation.
- Water-soluble unit dose articles comprise water-soluble film defining at least one internal compartment.
- a laundry detergent composition is housed within the internal compartment. Upon exposure to water, the water-soluble film dissolves/disintegrates releasing the laundry detergent composition into the surrounding water.
- the laundry detergent composition may be a solid laundry detergent composition.
- Such detergent compositions comprise known laundry detergent cleaning actives.
- One preferred active ingredient is an optical brightener.
- water-soluble unit dose articles Due to their compact form, water-soluble unit dose articles have limited space for formulating the solid laundry detergent compositions. This can result in lower than desired cleaning performance as extra detergent composition cannot simply be added to compensate for any under-performance. Addition of further detergent composition to the water-soluble unit dose article would require making the unit dose article bigger making it less convenient and also could contribute to negatives such as impaired dissolution when additional water soluble film would be required to accommodate the bigger water soluble unit dose article and/or reduced structural stability of the unit dose article especially when further stretching the original water soluble film to accommodate the bigger water soluble unit dose article (the film may not provide sufficient structural stability for the volume of solid detergent composition added).
- US20150275157 discloses a multicompartment unit dose comprising a powder comprising a hueing dye.
- US20090011970 discloses a multicompartment unit dose comprising a powder comprising Tinopal CBS.
- US20030087784 and WO0183667 disclose a multicompartment unit dose in which one compartment comprises a powder comprising brightener and 6% Na 2 CO 3 .
- a water-soluble unit dose article comprising a solid laundry detergent composition having a particular pH (upon dilution of the solid laundry detergent composition) provided improved fabric whiteness performance of a whitening agent formulated in said solid laundry detergent composition as compared to water-soluble unit dose articles having a solid laundry detergent composition having a higher pH (upon dilution of the solid laundry detergent composition) as known from the art.
- a first aspect of the present invention is a water-soluble unit dose article comprising a water-soluble film and a solid laundry detergent composition, wherein the water-soluble film defines a first internal compartment and wherein the solid laundry detergent composition is comprised within the first internal compartment, and wherein the water soluble unit dose article composition comprises a whitening agent, wherein the whitening agent is brightener 49; and wherein the solid composition at 1wt% dilution in deionized water at 20°C, has an equilibrium pH in the range of from 6.5 to 8.8, preferably between 6.7 and 8.5, wherein the solid laundry detergent composition comprises a non-soap anionic surfactant.
- a second aspect of the present invention is a method of washing comprising the steps of adding the water-soluble unit dose article according to the present invention to sufficient water to dilute the solid laundry detergent composition by a factor of at least 300 fold to create a wash liquor and contacting fabrics to be washed with said wash liquor.
- the present invention is to a water-soluble unit dose article comprising a water-soluble film and a solid laundry detergent composition.
- the water-soluble film is described in more detail below.
- the solid laundry detergent composition is described in more detail below.
- the water-soluble unit dose article comprises the water-soluble film shaped such that the unit-dose article comprises at least a first internal compartment surrounded by the water-soluble film.
- the compartment should be understood as meaning a closed internal space within the unit dose article, which holds the solid laundry detergent composition.
- the unit dose article may comprise a first water-soluble film and a second water-soluble film sealed to one another such to define the internal compartment.
- the water-soluble unit dose article is constructed such that the solid laundry detergent composition is comprised within the first internal compartment.
- the water-soluble unit dose article is constructed such that the solid laundry detergent composition does not leak out of the compartment during storage. However, upon addition of the water-soluble unit dose article to water, the water-soluble film dissolves and releases the contents of the internal compartment into the wash liquor.
- a first water-soluble film may be shaped to comprise an open compartment into which the solid laundry detergent composition is added.
- a second water-soluble film is then laid over the first film in such an orientation as to close the opening of the compartment.
- the first and second films are then sealed together along a seal region.
- the unit dose article may comprise more than one compartment, even at least two compartments, or even at least three compartments.
- the compartments may be arranged in superposed orientation, i.e. one positioned on top of the other. In such an orientation the unit dose article will comprise at least three films, top, middle and bottom.
- the compartments may be positioned in a side-by-side orientation, i.e. one orientated next to the other.
- the compartments may even be orientated in a 'tyre and rim' arrangement, i.e. a first compartment is positioned next to a second compartment, but the first compartment at least partially surrounds the second compartment, but does not completely enclose the second compartment.
- one compartment may be completely enclosed within another compartment.
- the unit dose article comprises at least two compartments, one of the compartments may be smaller than the other compartment.
- the unit dose article comprises at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartments are superposed on the larger compartment.
- the superposed compartments preferably are orientated side-by-side.
- the detergent composition according to the present invention may be comprised in at least one of the compartments. It may for example be comprised in just one compartment, or may be comprised in two compartments, or even in three compartments.
- Each compartment may comprise the same or different compositions.
- the different compositions could all be in the same form, or they may be in different forms.
- the water-soluble unit dose article may comprise at least a first compartment and a second compartment, preferably at least a first compartment, a second compartment and a third compartment.
- the compartments are arranged in a side-by-side arrangement, a superposed arrangement or a mixture thereof.
- at least the second compartment, more preferably at least the second compartment and the third compartment are superposed onto the first compartment.
- the second compartment and the third compartment are preferably arranged in a side-by-side arrangement superposed onto the first compartment.
- the first i.e. bottom compartment preferably comprises the free flowing solid detergent composition.
- the second and subsequent compartments i.e. superposed compartments comprise a liquid, a solid or a mixture thereof, preferably a liquid. All compartments might comprise a gas in addition to the enclosed compositions, preferably will comprise a gas. Without wishing to be bound by theory, such a gas will create an 'air space' in the compartment and will facilitate free flowing of the enclosed compositions, and furthermore can act as an additional barrier against eventual compartment to compartment active migration through the film.
- the gas is air.
- the water-soluble unit dose article comprises a whitening agent.
- the solid laundry detergent composition comprises the whitening agent.
- the solid laundry detergent composition may comprise between 0.05% and 2%, preferably between 0.1% and 1.5%, even more preferably between 0.2% and 1% by weight of the solid laundry detergent composition of the whitening agent.
- the whitening agent is an optical wherein the optical brightener is brightener 49.
- the solid laundry detergent composition may comprise between 0.05% and 2%, preferably between 0.1% and 1.5%, even more preferably between 0.2% and 1% by weight of the solid laundry detergent composition of the optical brightener.
- the optical brightener is brightener 49.
- the solid laundry detergent composition may comprise between 0.05% and 2%, preferably between 0.1% and 1.5%, even more preferably between 0.2% and 1% by weight of the solid laundry detergent composition of the hueing dye.
- the hueing dye may comprise polymeric or non-polymeric dyes, pigments, or mixtures thereof.
- the hueing dye comprises a polymeric dye, comprising a chromophore constituent and a polymeric constituent.
- the chromophore constituent is characterized in that it absorbs light in the wavelength range of blue, red, violet, purple, or combinations thereof upon exposure to light.
- the chromophore constituent exhibits an absorbance spectrum maximum from about 520 nanometers to about 640 nanometers in water and/or methanol, and in another aspect, from about 560 nanometers to about 610 nanometers in water and/or methanol.
- the dye chromophore is preferably selected from benzodifuranes, methine, triphenylmethanes, napthalimides, pyrazole, napthoquinone, anthraquinone, azo, oxazine, azine, xanthene, triphenodioxazine and phthalocyanine dye chromophores.
- Mono and di-azo dye chromophores are preferred.
- the hueing dye may comprise a dye polymer comprising a chromophore covalently bound to one or more of at least three consecutive repeat units. It should be understood that the repeat units themselves do not need to comprise a chromophore.
- the dye polymer may comprise at least 5, or at least 10, or even at least 20 consecutive repeat units.
- the repeat unit can be derived from an organic ester such as phenyl dicarboxylate in combination with an oxyalkyleneoxy and a polyoxyalkyleneoxy.
- Repeat units can be derived from alkenes, epoxides, aziridine, carbohydrate including the units that comprise modified celluloses such as hydroxyalkylcellulose; hydroxypropyl cellulose; hydroxypropyl methylcellulose; hydroxybutyl cellulose; and, hydroxybutyl methylcellulose or mixtures thereof.
- the repeat units may be derived from alkenes, or epoxides or mixtures thereof.
- the repeat units may be C2-C4 alkyleneoxy groups, sometimes called alkoxy groups, preferably derived from C2-C4 alkylene oxide.
- the repeat units may be C2-C4 alkoxy groups, preferably ethoxy groups.
- the at least three consecutive repeat units form a polymeric constituent.
- the polymeric constituent may be covalently bound to the chromophore group, directly or indirectly via a linking group.
- suitable polymeric constituents include polyoxyalkylene chains having multiple repeating units.
- the polymeric constituents include polyoxyalkylene chains having from 2 to about 30 repeating units, from 2 to about 20 repeating units, from 2 to about 10 repeating units or even from about 3 or 4 to about 6 repeating units.
- Non-limiting examples of polyoxyalkylene chains include ethylene oxide, propylene oxide, glycidol oxide, butylene oxide and mixtures thereof.
- the film of the present invention is soluble or dispersible in water.
- the water-soluble film preferably has a thickness of from 20 to 150 micron, preferably 35 to 125 micron, even more preferably 50 to 110 micron, most preferably about 76 micron.
- the film has a water-solubility of at least 50%, preferably at least 75% or even at least 95%, as measured by the method set out here after using a glass-filter with a maximum pore size of 20 microns: 5 grams ⁇ 0.1 gram of film material is added in a pre-weighed 3L beaker and 2L ⁇ 5ml of distilled water is added. This is stirred vigorously on a magnetic stirrer, Labline model No. 1250 or equivalent and 5 cm magnetic stirrer, set at 600 rpm, for 30 minutes at 30°C. Then, the mixture is filtered through a folded qualitative sintered-glass filter with a pore size as defined above (max. 20 micron). The water is dried off from the collected filtrate by any conventional method, and the weight of the remaining material is determined (which is the dissolved or dispersed fraction). Then, the percentage solubility or dispersability can be calculated.
- Preferred film materials are preferably polymeric materials.
- the film material can, for example, be obtained by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art.
- Preferred polymers, copolymers or derivatives thereof suitable for use as pouch material are selected from polyvinyl alcohols, polyvinyl pyrrolidone, polyalkylene oxides, acrylamide, acrylic acid, cellulose, cellulose ethers, cellulose esters, cellulose amides, polyvinyl acetates, polycarboxylic acids and salts, polyaminoacids or peptides, polyamides, polyacrylamide, copolymers of maleic/acrylic acids, polysaccharides including starch and gelatine, natural gums such as xanthum and carragum.
- More preferred polymers are selected from polyacrylates and water-soluble acrylate copolymers, methylcellulose, carboxymethylcellulose sodium, dextrin, ethylcellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, maltodextrin, polymethacrylates, and most preferably selected from polyvinyl alcohols, polyvinyl alcohol copolymers and hydroxypropyl methyl cellulose (HPMC), and combinations thereof.
- the level of polymer in the pouch material for example a PVA polymer, is at least 60%.
- the polymer can have any weight average molecular weight, preferably from about 1000 to 1,000,000, more preferably from about 10,000 to 300,000 yet more preferably from about 20,000 to 150,000.
- polymers and/or copolymers can also be used as the pouch material, especially mixtures of polyvinylalcohol polymers and/or copolymers, especially mixtures of polyvinylalcohol homopolymers and/or anionic polyvinylalcohol copolymers preferably selected from sulphonated and carboxylated anionic polyvinylalcohol copolymers especially carboxylated anionic polyvinylalcohol copolymers.
- the water soluble film comprises a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer.
- Preferred films exhibit good dissolution in cold water, meaning unheated distilled water.
- Preferably such films exhibit good dissolution at temperatures of 24°C, even more preferably at 10°C.
- good dissolution it is meant that the film exhibits water-solubility of at least 50%, preferably at least 75% or even at least 95%, as measured by the method set out here after using a glass-filter with a maximum pore size of 20 microns, described above.
- Preferred films are those supplied by Monosol under the trade references M8630, M8900, M8779, M8310.
- the film may be opaque, transparent or translucent.
- the film may comprise a printed area.
- the area of print may be achieved using standard techniques, such as flexographic printing or inkjet printing.
- the film may comprise an aversive agent, for example a bittering agent.
- Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof.
- Any suitable level of aversive agent may be used in the film. Suitable levels include, but are not limited to, 1 to 5000ppm, or even 100 to 2500ppm, or even 250 to 2000rpm.
- the first internal compartment comprises a solid laundry detergent composition.
- the solid laundry detergent composition may comprise solid particulates or may be a single homogenous solid.
- the solid laundry detergent composition comprises particles. This means the solid laundry detergent composition comprises individual solid particles as opposed to the solid being a single homogenous solid.
- the particles may be free-flowing or may be compacted, preferably free-flowing.
- the particles may be spray-dried particles, agglomerates, extrudates or a mixture thereof. Those skilled in the art will know how to make spray-dried particles, agglomerates or extrudates using techniques commonly known in the art.
- the solid particulate laundry detergent composition preferably has a mean particle size of between 400 microns and 1000 microns, more preferably between 450 microns and 850 microns.
- the solid particulate laundry detergent composition has a bulk density of between 400 and 1000g/l, more preferably between 500 and 800g/l, as measured through ISO 697 test method.
- the solid particulate laundry detergent composition fills between 25% and 95%, preferably between 30% and 90%, more preferably between 40% and 80% of the available volume within the first compartment, the remaining volume preferably filled with a gas.
- the gas may be any suitable gas.
- the gas may comprise oxygen, nitrogen, carbon dioxide or a mixture thereof.
- the gas may be air.
- the first compartment preferably comprises between 1g and 25g, preferably between 5g and 20 g, more preferably between 8g and 18g of the solid particulate laundry composition.
- the solid particulate laundry detergent composition is preferably free flowing within the first internal compartment. That is to say, if the water-soluble unit dose article is moved or repositioned, the solid particulate laundry detergent composition can be seen to freely move, or flow within the first internal compartment. This is opposed to where the solid particulate laundry detergent composition is compressed such as happens when excess air is drawn out of the first internal compartment so that the film contracts and compresses around the solid particulate laundry detergent composition.
- Such water-soluble unit dose articles comprising compressed solids are commonly known from the art.
- the solid laundry detergent composition comprises a non-soap surfactant.
- the solid laundry detergent composition comprises between 20% and 75%, more preferably between 30% and 70%, most preferably between 40% and 60% by weight of the solid laundry detergent composition of the non-soap surfactant
- the non-soap surfactant may comprises a non-soap anionic surfactant, and preferably a non-ionic surfactant.
- the solid composition may comprise a non-soap anionic surfactant, preferably, the solid laundry detergent composition comprises between 20% and 75%, more preferably between 30% and 70%, most preferably between 40% and 60% by weight of the solid laundry detergent composition of the non-soap anionic surfactant.
- the non-soap anionic surfactant comprises linear alkylbenzene sulphonate, alkoxylated alkyl sulphate or a mixture thereof, more preferably a mixture thereof.
- the ratio of linear alkylbenzene sulphonate to alkoxylated alkyl sulphate preferably the ratio of linear alkylbenzene sulphonate to ethoxylated alkyl sulphate is from 1:2 to 20:1, preferably from 1.1:1 to 15:1, more preferably from 1.2:1 to 10:1, even more preferably from 1.3:1 to 5:1, even more preferably from 1.4:1 to 3:1, most preferably from 2:1 to 3:1.
- the alkoxylated alkyl sulphate is an ethoxylated alkyl sulphate with an average degree of ethoxylation of between 0.5 and 7, preferably between 0.5 and 5, more preferably between 0.5 and 3, even more preferably from about 1 to about 2 most preferably 1 and an average alkyl chain length of between 8 and 18.
- the alkoxylated alkyl sulphate has an average alkyl chain length between 10 and 16, more preferably between 12 and 14.
- the linear alkylbenzene sulphonate is a C 10 -C 16 linear alkylbenzene sulphonate or a C 11 -C 14 linear alkylbenzene sulphonate or a mixture thereof.
- the non-ionic surfactant is selected from an alkoxylated alcohol preferably selected from a natural or olefin derived fatty alcohol alkoxylate, an oxo-synthesised fatty alcohol alkoxylate, Guerbet fatty alcohol alkoxylates, alkyl phenol alcohol alkoxylates or a mixture thereof.
- the alcohol alkoxylate may have an average degree of alkoxylation of between 0.5 and 10, preferably between 1 and 9, more preferably between 3 and 8, more preferably a degree of ethoxylation of between 0.5 and 10, preferably between 1 and 9, more preferably between 3 and 8, most preferably between 5 and 8 or even from about 7 to about 8.
- the alcohol alkoxylate may have an average alkyl chain length of between 8 and 18, preferably between 10 and 16, more preferably between 12 and 15.
- the solid composition at 1wt% dilution in deionized water at 20°C has an equilibrium pH in the range of from 6.5 to 8.8, preferably between 6.7 and 8.5, more preferably between 7 and 8.
- the specific low pH of the solid laundry detergent composition provides for improved fabric cleaning or treatment performance of the water-soluble unit dose article according to the present invention as compared to water-soluble unit dose articles wherein the solid laundry detergent composition has a higher pH.
- Such higher pH solid laundry detergent composition formulated into water-soluble unit dose articles are known in the art.
- a preferred method is to obtain a 10g sample accurately weighed to two decimal places, of the solid laundry detergent composition.
- the sample should preferably be obtained using a Pascall sampler in a dust cabinet.
- the solid laundry detergent composition may comprise between 0% and 10% by weight of the solid laundry detergent composition of carbonate salts.
- the carbonate salts may be selected from sodium carbonate, potassium carbonate, sodium bicarbonate, sodium bicarbonate, burkeite, sequicarbonate, habit modified carbonate, crystal growth modified burkeite or a mixture thereof, preferably sodium carbonate.
- the solid laundry detergent composition may comprise a material selected from zeolite, sodium sulphate, silica, organic acid or a mixture thereof, preferably wherein the solid laundry detergent composition comprises between 10% and 35%, more preferably between 12% and 25% by weight of the solid laundry detergent composition of the material.
- the solid laundry detergent composition may comprise an organic acid, preferably between 1% and 10% by weight of the solid laundry detergent composition of an organic acid and/or a salt thereof.
- the organic acid is a carboxylic acid, preferably a polycarboxylic acid, more preferably the organic acid is selected from citric acid, malic acid, lactic acid, propionic acid, valeric acid, caproic acid, carbonic acid, adipic acid, gluconic acid, methylglycinediacetic acid or a mixture thereof, most preferably citric acid.
- such materials may be used to control the pH of the laundry detergent composition.
- the solid laundry detergent composition may comprise an adjunct ingredient, wherein the adjunct ingredient is preferably selected from cationic polymers, dye transfer inhibitors, chelants including aminocarboxylate and aminophosphonate chelants such as HEDP, enzymes, acrylate-based polymers, perfumes and perfume capsules, polyester terephthalate polymers, PEG-based polymers, ethoxylated polyethyleneimines, polysaccharides, amine oxide, aesthetic dyes, hueing dyes, antifoams, bleaching actives, or a mixture thereof.
- the adjunct ingredient is preferably selected from cationic polymers, dye transfer inhibitors, chelants including aminocarboxylate and aminophosphonate chelants such as HEDP, enzymes, acrylate-based polymers, perfumes and perfume capsules, polyester terephthalate polymers, PEG-based polymers, ethoxylated polyethyleneimines, polysaccharides, amine oxide, aesthetic dyes, hueing dyes, antifoams, bleaching actives
- Preferred acrylate-based polymers are acrylate/maleate random copolymers.
- Preferred polysaccharides are cationically-modified polysaccharides.
- the cationically modified polysaccharide is selected from cationic guar gums, cationic cellulosic polymers, and mixtures thereof, most preferably cationic cellulosic polymers even more preferably cationically modified hydroxyethyl cellulose, most preferably, hydroxyethyl cellulose derivatised with trimethyl ammonium substituted epoxide.
- the particulate laundry detergent composition comprises agglomerates.
- the agglomerates comprise non-soap surfactant, sodium sulphate and silica.
- Another aspect of the present invention is the use of a solid laundry detergent composition comprising a non-soap surfactant and having at 1wt% dilution in deionized water at 20°C an equilibrium pH in the range of from 6.5 to 8.8 in a water-soluble unit dose article as according to the present invention to improve the performance of an optical brightener.
- An aspect of the present invention is a method of washing comprising the steps of adding the water-soluble unit dose article according to the present invention to sufficient water to dilute the solid particulate laundry detergent composition by a factor of at least 300 fold to create a wash liquor and contacting fabrics to be washed with said wash liquor.
- the method may be performed in a hand wash operation, an automatic laundry washing machine or a mixture thereof.
- Surfactant-containing particles can be prepared by spray-drying, agglomeration or other processes such as drum drying etc. Such agglomerates are preferred due to the high surfactant loading that can be achieved.. However other processes can be used.
- the surfactant agglomerates preferably contain anionic surfactant, including LAS.
- An especially preferred feature is that the surfactant agglomerates contain a mixture of anionic surfactants, especially LAS and AES surfactant.
- smaller particles are usually removed by sieving. It is especially preferred to sieve the surfactant agglomerates plus other detergent ingredients prior to any subsequent coating step.
- the surfactant agglomerates, plus other granular detergent ingredients such as HEDP, are sieved to remove particles smaller than 600 microns.
- the surfactant particles, plus any other detergent ingredients that are optionally added, are then put into a mixer where they are dusted or coated with a fine powder to provide a protective layer on the surface.
- An example of such a process is where blown powders are coated with non-ionic surfactant as a binder and then zeolite.
- a suitable detergent mix can be prepared as follows. Surfactant agglomerates containing a blend of LAS and AExS anionic surfactants are prepared and dried to give particles with a total surfactant activity of 60% comprising a 2:1 blend of LAS to AExS surfactants. The particles contain 20% of hydrophilic silica. A suitable silica is 22S from Evonik. The balance consists of ground sodium sulphate, water and miscellaneous. The fine particles are then removed by sieving the agglomerates on a 600 micron mesh sieve. Oversize particles are removed by sieving the agglomerates through a 1400 micron mesh size sieve.
- 3kg of the sieved surfactant agglomerates are then put into a 6-litre internal volume paddle mixer from Forberg. 300g of ground sodium sulphate (d90 ⁇ 100 microns) and 100g of sodium aluminosilicate type 4A are then added to the mixer and the mixer is run at maximum speed for 2 minutes, thus coating the surface of the agglomerates with sulphate and zeolite. The coated agglomerates are then removed and blended with other detergent materials to give a free-flowing detergent mixture suitable for use.
- Test 1 Whiteness - Improving brightener efficacy
- White fabric bundles (8 in total containing Terry Towel, Knitted Cotton, Flat Cotton, Polycotton and Polyester sourced from Warwick Equest Ltd. Unit 55, Consett Business Park, Consett, County Durham, DH8 6BN) were added to each machine and washed in either reference product or test product. Four wash cycles were carried out, removing soiled ballast sheets each time and adding four more along with the addition of product. After repeating the wash process four times, whiteness bundles were removed and tumble dried in an electric Miele tumble dryer (Novotronic T430) set to "extra dry".
- Miele tumble dryer Novotronic T430
- the red/green opponent colours are represented along the a* axis, with green at negative a* values and red at positive a* values.
- the yellow/blue opponent colors are represented along the b* axis, with blue at negative b* values and yellow at positive b* values) a more negative b value showing higher light emission in the blue region (420-470nm) which is a function of optical brightening agents as they absorb light in the ultraviolet/violet region (340-370nm) and re-emit in the blue.
- brightener inclusion in the low pH test formulation according to the invention provides a more negative average b value across 4 fabrics tested vs brightener inclusion in high pH reference formulation outside the scope of the invention. This more negative b value results in brighter fabrics.
- b* Value Low pH vs High pH with Brightener Fabric Type High pH Ref Low pH Test Terry Towel -15.16 -15.49 Poly cotton -14.69 -15.82 Polyester -14.6 -14.17 Knitted Cotton -13.24 -13.73 Average -14.42 -14.80
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Claims (13)
- Wasserlöslicher Einheitsdosisartikel, umfassend eine wasserlösliche Folie und eine feste Wäschewaschmittelzusammensetzung, wobei die wasserlösliche Folie eine erste Innenkammer definiert und wobei die feste Wäschewaschmittelzusammensetzung in der ersten Innenkammer enthalten ist und wobei die wasserlösliche Einheitsdosisartikelzusammensetzung einen Weißmacher umfasst, wobei der Weißmacher Aufheller 49 (4,4'-Bis(2-sulfostyryl)biphenyl) ist und wobei die feste Zusammensetzung bei 1 Gew.-% Verdünnung in entionisiertem Wasser bei 20°C einen Gleichgewichts-pH-Wert im Bereich von 6,5 bis 8,8, vorzugsweise zwischen 6,7 und 8,5 aufweist, wobei die feste Wäschewaschmittelzusammensetzung ein anionisches seifenfreies Tensid umfasst.
- Wasserlöslicher Einheitsdosisartikel nach Anspruch 1, wobei die feste Wäschewaschmittelzusammensetzung von 0 Gew.-% bis 10 Gew.-% Carbonatsalz umfasst, wobei die Carbonatsalze vorzugsweise ausgewählt sind aus Natriumcarbonat, Kaliumcarbonat, Natriumbicarbonat, Natriumbicarbonat, Burkeit, mit Sesquicarbonathabitus modifiziertem Carbonat, mit Kristallwachstum modifiziertem Burkeit oder einer Mischung davon, vorzugsweise Natriumcarbonat.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei die feste Wäschewaschmittelzusammensetzung den Weißmacher umfasst und wobei die feste Wäschewaschmittelzusammensetzung vorzugsweise zu zwischen 0,05 Gew.-% und 2 Gew.-%, vorzugsweise zu zwischen 0,1 Gew.-% und 1,5 Gew.-%, noch mehr bevorzugt zu zwischen 0,2 Gew.-% und 1 Gew.-%, bezogen auf die feste Wäschewaschmittelzusammensetzung, den Weißmacher umfasst.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei das anionische seifenfreies Tensid lineares Alkylbenzolsulfonat, alkoxyliertes Alkylsulfat oder eine Mischung davon umfasst, mehr bevorzugt eine Mischung davon, wobei das Verhältnis von linearem Alkylbenzolsulfonat zu alkoxyliertem Alkylsulfat, vorzugsweise das Verhältnis von linearem Alkylbenzolsulfonat zu ethoxyliertem Alkylsulfat von 1:2 bis 20:1, vorzugsweise von 1,1:1 bis 15:1, mehr bevorzugt von 1,2:1 bis 10:1, noch mehr bevorzugt von 1,3:1 bis 5:1, noch mehr bevorzugt von 1,4:1 bis 3:1, am meisten bevorzugt von 2:1 bis 3:1 beträgt.
- Wasserlöslicher Einheitsdosisartikel nach Anspruch 5, wobei die feste Wäschewaschmittelzusammensetzung zu zwischen 20 Gew.-% und 75 Gew.-%, vorzugsweise zu zwischen 30 Gew.-% und 70 Gew.-%, mehr bevorzugt zu zwischen 40 Gew.-% und 60 Gew.-%, bezogen auf das Gewicht der festen Wäschewaschmittelzusammensetzung, das anionische seifenreie Tensid umfasst.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei die feste Wäschewaschmittelzusammensetzung zu zwischen 1 Gew.-% und 10 Gew.-%, bezogen auf die feste Wäschewaschmittelzusammensetzung, eine organische Säure umfasst und wobei die organische Säure vorzugsweise eine Carbonsäure ist, vorzugsweise eine Polycarbonsäure, mehr bevorzugt die organische Säure ausgewählt ist aus Citronensäure, Äpfelsäure, Milchsäure, Propionsäure, Valeriansäure, Capronsäure, Kohlensäure, Adipinsäure, Gluconsäure, Methylglycindiessigsäure oder einer Mischung davon, am meisten bevorzugt Citronensäure.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei die feste Wäschewaschmittelzusammensetzung ein freifließender teilchenförmiger Feststoff, ein verdichteter teilchenförmiger Feststoff oder eine Mischung davon ist und eine mittlere Teilchengröße zwischen 400 Mikrometer und 1000 Mikrometer, vorzugsweise zwischen 450 Mikrometer und 850 Mikrometer aufweist.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei die feste Wäschewaschmittelzusammensetzung eine Rohdichte zwischen 400 und 1000 g/l, vorzugsweise zwischen 500 und 800 g/l aufweist.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei die erste Kammer zu zwischen 1 g und 25 g, vorzugsweise zwischen 5 g und 20 g, vorzugsweise zwischen 8 g und 18 g die feste Wäschewaschzusammensetzung umfasst.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei die wasserlösliche Folie Polyvinylalkohol umfasst, wobei die wasserlösliche Folie vorzugsweise Polyvinylalkoholpolymer oder -copolymer umfasst, vorzugsweise eine Mischung aus Polyvinylalkoholpolymeren und/oder Polyvinylalkoholcopolymeren, mehr bevorzugt ausgewählt aus sulfonierten und carboxylierten anionischen Polyvinylalkoholcopolymeren, insbesondere carboxylierten anionischen Polyvinylalkoholcopolymeren, am meisten bevorzugt eine Mischung aus einem Polyvinylalkoholhomopolymer und einem carboxylierten anionischen Polyvinylalkoholcopolymer.
- Wasserlöslicher Einheitsdosisartikel nach einem der vorstehenden Ansprüche, wobei der wasserlösliche Einheitsdosisartikel mindestens eine erste Kammer und eine zweite Kammer, vorzugsweise mindestens eine erste Kammer, eine zweite Kammer und eine dritte Kammer umfasst.
- Wasserlöslicher Einheitsdosisartikel nach Anspruch 11, wobei die Kammern in einer Seite-an-Seite-Anordnung, einer übereinanderliegenden Anordnung oder einer Mischung davon angeordnet sind, wobei vorzugsweise mindestens eine Kammer, wobei vorzugsweise mindestens zwei Kammern über einer dritten Kammer liegend angeordnet sind, wobei noch mehr bevorzugt mindestens eine der übereinanderliegend angeordneten Kammern eine Flüssigkeit umfasst, wobei die beiden übereinanderliegend angeordneten Kammern vorzugsweise eine Flüssigkeit umfassen.
- Waschverfahren, umfassend die Schritte des Zugebens des wasserlöslichen Einheitsdosisartikels nach einem der vorstehenden Ansprüche zu ausreichend Wasser, um die feste Wäschewaschmittelzusammensetzung um mindestens das 300-Fache zu verdünnen, um eine Waschlauge zu erzeugen, und des Inkontaktbringens von zu waschendem Stoff mit der Waschlauge.
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EP17176195.0A EP3415591B1 (de) | 2017-06-15 | 2017-06-15 | Wasserlöslicher einheitsdosierartikel mit einem festen waschmittel |
PCT/US2018/037047 WO2018231787A1 (en) | 2017-06-15 | 2018-06-12 | Water-soluble unit dose article comprising a solid laundry detergent composition |
US16/005,726 US10550357B2 (en) | 2017-06-15 | 2018-06-12 | Water-soluble unit dose article comprising a solid laundry detergent composition |
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EP17176195.0A EP3415591B1 (de) | 2017-06-15 | 2017-06-15 | Wasserlöslicher einheitsdosierartikel mit einem festen waschmittel |
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EP3415591B1 true EP3415591B1 (de) | 2021-04-28 |
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ES2724992B2 (es) | 2019-05-16 | 2020-03-17 | Sanchez Sandra Herrero | Detergente para lavado de prendas deportivas y procedimiento de fabricación del mismo |
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US6881713B2 (en) * | 2000-04-28 | 2005-04-19 | The Procter & Gamble Company | Pouched compositions |
GB2361688A (en) * | 2000-04-28 | 2001-10-31 | Procter & Gamble | Multi-compartment water soluble pouch for detergents |
DE602007013545D1 (de) * | 2007-07-02 | 2011-05-12 | Procter & Gamble | Mehrkammerbeutel enthaltend Waschmittel |
EP2924108A1 (de) * | 2014-03-28 | 2015-09-30 | The Procter and Gamble Company | Dosierungsartikel für wasserlösliche Einheit |
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