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
  • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/38—Cationic compounds
  • C11D1/62—Quaternary ammonium 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/835—Mixtures of non-ionic with cationic 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/86—Mixtures of anionic, cationic, and non-ionic compounds
• • 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
  • C11D3/0063—Photo- activating 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/18—Hydrocarbons
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2006—Monohydric alcohols
  • C11D3/2034—Monohydric alcohols aromatic
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2072—Aldehydes-ketones
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2086—Hydroxy carboxylic acids-salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2093—Esters; Carbonates
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/28—Heterocyclic compounds containing nitrogen in the ring
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/33—Amino carboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
  • C11D1/146—Sulfuric acid esters
• • 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
  • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

• the present invention relates to fabric washing detergent compositions.
• the invention relates to fabric washing detergent compositions containing photofading inhibitors.
• N-phenylphthalisomides as ultraviolet radiation absorbers for cotton, wool, polyester and rayon.
• the compositions require an aqueous sulphuric acid vehicle for deposition.
• Fabric care compositions comprising a water dispersible / water soluble copolymers which prevent photofading are disclosed in EP 0 523 956 (Unilever) .
• the present invention addresses these problems, and relates to an improved method of depositing photofading inhibitors to fabrics during the washing process.
• the present invention also relates to a method of improving the perfume delivery of compositions.
• a detergent composition comprising: i) a nonionic detergent surfactant; ii) a cationic material; iii) a liquid photofading inhibitor having a log P value of at least 1.9 or a solid photofading inhibitor dissolved in a liquid the liquid having a log P of at least 1.9 or mixtures thereof and; iv) optionally an anionic surfactant
• the invention further relates to the use of a detergent composition as described above for the deposition of a photofading inhibitor onto a fabric.
• UVA and UVB absorbing materials with high extinction coefficients. These compounds are commonly called sunscreens. However, the use of such materials is preferably limited for protection against UV radiation with a wavelength of 400nm or below as compounds with the whole or part of their spectra above 400nm will be coloured.
• Protection from visible radiation with a wavelength of 400nm or greater is preferably achieved by using singlet oxygen quenchers, free radical traps and anti-oxidants.
• the photofading inhibitors should have a log P value of at least 1.9, more preferably of at least 2.5, most preferably greater than 3.5.
• the photofading inhibitor should be dispersed in a liquid, the liquid having a log P value of at least 1.9, more preferably fo at least 2.5, most preferably greater than 3.5. It is also beneficial if the liquid in which the solid photofading inhibitor is to be dissolved is immiscible in water or only sparingly soluble. By sparingly soluble a solubility of no more than 0.04 moles/litre is meant.
• Log P is the octanol/water partition coefficient and can be used to measure the hydrphobicity of a molecule. Log P can be determined experimentally or by calculation. Both procedures are described in Chemical Reviews Volume 71, number 5, pages 52-5-616 (1971) .
• the photofading inhibitor or photofading inhibitor mixture is present at levels from 0.01 wt% to 10 wt% of the total weight of the composition.
• the more preferred level of sunscreen is from 0.025 wt% to 2.5 wt %, and the most preferably 0.05 wt% to 0.5 wt %.
• a sunscreen is described as any material which absorbs UVA or UVB radiation. It is advantageous if the sunscreens have a molar extiction coefficient ( € ) of greater than 2,000 mol "1 cm "1 .
• the International Commission on Illumination (CIE)in 1970 defined the UV wavelength subdivisions as:-
• the sunscreen can be an oily liquid with a logP of at least 1.9 or a solid organic material that can be dissolved in a water immiscible or sparingly water soluble liquid, the liquid having a logP of greater than 1.9.
• the sunscreen absorbs light at a wavelength from about 280-400nm.
• Preferred sunscreen compounds contain at least one chromophore selected from the following groups and mixtures thereof.
• Rl and R2 is a hydrogen , methyl, ethyl, C 1 -C 22 branched or straight chain alkyl group; and mixtures thereof, preferably a methyl group.
• the sunscreen compound containing at least one chromophore is selected from the group consisting of phenylbenzotriazoles, esters of cinnamic acid, benzophenones, esters of para aminobenzoic acid, esters of salicylic acid, dibenzoyl methane and mixtures thereof.
• the sunscreen is selected from the group consisting of and mixtures thereof.
• R 4 is a hydrogen, a hydroxy group, a Cj-Cj, alkyl group, preferably a hydrogen or a hydroxy group and most preferably a hydroxy group.
• R 5 is is a hydrogen, a hydroxy group, a C ⁇ C ⁇ alkyl group, more preferably a Cj-C Intel alkyl group and most preferably a tertiary amyl group or tertiary butyl group.
• R 6 is is a hydrogen, a hydroxy group, a C x -C 22 alkyl group, more preferably a alkyl group and most preferably a tertiary amyl group or tertiary butyl group.
• R 4 is hydroxyl and R 5 and R 6 are tertiary amyl groups is the commercial sunscreen Tinuvin 328, and where R 4 is hydroxyl and R 5 and R 6 are tertiary butyl groups is Tinuvin 327. Both these sunscreens are manufactured by Ciba.
• R 7 is a hydrogen, a hydroxy group, a methoxy group,C j - C 22 alkyl group,and mixtures thereof.
• R 8 is a hydrogen, a hydroxy group,C)-C 22 alkyl group,and mmiixxttuurreess tthheerreeooff.
• R 9 is a hydrogen, a hydroxy group, Cj-C 22 alkyl group, and mixtures thereof.
• R 10 is a hydrogen, or a C x -C 22 alkyl group.
• R n is a hydrogen, or a C x -C ⁇ , alkyl group.
• R 13 is a C!-C 22 alkyl group.
• R u is a alkyl group
• R 1S is a hydrogen, methoxy or a Cj-C 22 alkyl group.
• the antioxidants singlet oxygen quenchers or free radical trap
• antioxidant refers to a non-fabric staining, light stable antioxidant compound, that is either an oily liquid with a logP of at least 1.9 or a solid organic material that can be dissolved in a water immiscible or sparingly water soluble liquid with a logP of greater than 1.9.
• antioxidant compounds and/or singlet oxygen quenchers include : ascorbic palmitate, butylated hydroxy anisole, tertiary butyl hydroquinone, natural tocopherols and derivatives such as vitamin E acetate and Irganox antioxidants as supplied by Ciba Geigy such as Irganox 1010 (tetrakis methylene (3,5-di- tert-butyl-4hydroxycinnamate) ) methane), Irganox 1035 (thiodiethylene bis (3, 5-di-tert-butyl-4- hydroxyhydrocinnamate) ) , Irganox 1076 (octadecyl propan-(3- benzene-3 ' , 5 ' di tert butyl-4' hydroxy) -oate,
• Preferred materials include
• the nonionic surfactant is nonionic surfactant
• composition of the invention requires the presence of a nonionic surfactant.
• Nonionic surfactants that may be used 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.
• Non-ethoxylated nonionic surfactants include alkylpolyglycosides, glycerol monoethers, and polyhydroxyamides (glucamide) .
• the level of nonionic surfactant is from 2 wt% to 40 wt%, preferably from 10 wt% to 30 wt% of the total product.
• detergent-active compound surfactant
• amount present will depend on the intended use of the detergent composition.
• surfactant systems may be chosen, as is well known to the skilled formulator, for handwashing products and for products intended for use in different types of washing machine.
• compositions of the invention may be present in compositions of the invention it is preferred if it is absent.
• the ratio of cationic material to anionic material is at least 2:1.
• suitable anionic surfactants include alkylbenzene sulphonate primary and secondary alkyl sulphates, particularly C 8 -C 15 primary alkyl sulphates; alkyl ether sulphates; olefin sulphonates; alkyl xylene sulphonates; dialkyl sulphosuccinates; ethercarboxylates; isothionates; sarcosinates and fatty acid ester sulphonates, Sodium salts are generally preferred.
• Detergent compositions suitable for use in most automatic fabric washing machines generally contain anionic non-soap surfactant, or nonionic surfactant, or combinations of the two in any ratio, optionally together with soap.
• the detergent surfactant is advantageously solid at room temperature as this provides crisp composition particles.
• compositions of the invention must contain a cationic compound.
• the quaternary ammonium compound is a quaternary ammonium compound having at least one C 1? -C 22 alkyl chain.
• the quaternary ammonium compound has the following formula:
• a preferred compound of this type is the quaternary ammonium compound cetyl trimethyl quaternary ammonium bromide.
• a second class of materials for use with the present invention are the quaternary ammonium compound having the following formula:
• R 1 and R 2 are indepently selected from C 12 to C 22 alkyl or alkenyl chain; R 3 and R 4 are independently selected from Cj-C, alkyl chains and X is a compatible anion.
• the ratio of cationic to nonionic surfactant is from 1:100 to 50:50, more preferably 1:50 to 20:50.
• the cationic compound may be present from 0.02 wt% to 20 wt% of the total weight of the composition.
• the cationic compound may be present from 0.05 wt% to 15 wt%, a more preferred composition range is from 0.2 wt% to 5 wt%, and most preferably the composition range is from 0.4 wt% to 2.5 wt% of the total weight of the composition. If the product is a liquid it is preferred if the level of cationic surfactant is from 0.05wt% to 10wt% of the total weight of the composition.
• the cationic compound may be present from 0.2wt% to 5 wt%, and most preferably from 0.4 wt% to 2.5 wt% of the total weight of the composition.
• the level of cationic surfactant is 0.05 wt% to 15 wt% of the total weight of the composition.
• a more preferred composition range is from 0.2 wt% to 10 wt%, and the most preferred composition range is from 0.9 wt% to 3.0 wt% of the total weight of the composition.
• the detergent compositions of the invention will generally also contain one or more detergency builders.
• the total amount of detergency builder in the compositions will suitably range from 5 to 80 wt%, preferably from 10 to 60 wt%.
• Inorganic builders that may be present include sodium carbonate, if desired in combination with a crystallisation seed for calcium carbonate, as disclosed in GB 1 437 950
• crystalline and amorphous aluminosilicates for example, zeolites as disclosed in GB 1 473 201 (Henkel), amorphous aluminosilicates as disclosed in GB 1 473 202 (Henkel) and mixed crystalline/amorphous aluminosilicates as disclosed in GB 1 470 250 (Procter & Gamble); and layered silicates as disclosed in EP 164 514B (Hoechst) .
• Inorganic phosphate builders for example, sodium orthophosphate, pyrophosphate and tripolyphosphate are also suitable for use with this invention.
• the detergent compositions of the invention preferably contain an alkali metal, preferably sodium, aluminosilicate builder.
• Sodium aluminosilicates may generally be incorporated in amounts of from 10 to 70% by weight (anhydrous basis), preferably from 25 to 50 wt%.
• the alkali metal aluminosilicate may be either crystalline or amorphous or mixtures thereof, having the general formula:
• the preferred sodium aluminosilicates contain 1.5-3.5 SiO ? units (in the formula above) . Both the amorphous and the crystalline materials can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
• Suitable crystalline sodium aluminosilicate ion-exchange detergency builders are described, for example, in GB 1 429 143 (Procter & Gamble) .
• the preferred sodium aluminosilicates of this type are the well-known commercially available zeolites A and X, and mixtures thereof.
• the zeolite may be the commercially available zeolite 4A now widely used in laundry detergent powders.
• the zeolite builder incorporated in the compositions of the invention is maximum aluminium zeolite P (zeolite MAP) as described and claimed in EP 384 070A (Unilever) .
• Zeolite MAP is defined as an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium ratio not exceeding 1.33, preferably within the range of from 0.90 to 1.33, and more preferably within the range of from 0.90 to 1.20.
• zeolite MAP having a silicon to aluminium ratio not exceeding 1.07, more preferably about 1.00.
• the calcium binding capacity of zeolite MAP is generally at least 150 mg CaO per g of anhydrous material.
• Organic builders that may be present include polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphinates; monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di- and trisuccinates, carboxymethyloxysuccinates, carboxymethyloxymalonates, dipicolinates, hydroxyethyliminodiacetates, alkyl- and alkenylmalonates and succinates; and sulphonated fatty acid salts. This list is not intended to be exhaustive.
• Especially preferred organic builders are citrates, suitably used in amounts of from 5 to 30 wt%, preferably from 10 to 25 wt%; and acrylic polymers, more especially acrylic/maleic copolymers, suitably used in amounts of from 0.5 to 15 wt%, preferably from 1 to 10 wt%.
• Builders both inorganic and organic, are preferably present in alkali metal salt, especially sodium salt, form.
• Detergent compositions according to the invention may also suitably contain a bleach system.
• Fabric washing compositions may desirably contain peroxy bleach compounds, for example, inorganic persalts or organic peroxyacids, capable of yielding hydrogen peroxide in aqueous solution.
• Suitable peroxy bleach compounds include organic peroxides such as urea peroxide, and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates.
• organic peroxides such as urea peroxide
• inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates.
• Preferred inorganic persalts are sodium perborate monohydrate and tetrahydrate, and sodium percarbonate.
• sodium percarbonate having a protective coating against destabilisation by moisture Especially preferred is sodium percarbonate having a protective coating against destabilisation by moisture.
• Sodium percarbonate having a protective coating comprising sodium metaborate and sodium silicate is disclosed in GB 2 123 044B (Kao) .
• the peroxy bleach compound is suitably present in an amount of from 0.1 to 35 wt%, preferably from 0.5 to 25 wt%.
• the peroxy bleach compound may be used in conjunction with a bleach activator (bleach precursor) to improve bleaching action at low wash temperatures.
• the bleach precursor is suitably present in an amount of from 0.1 to 8 wt%, preferably from 0.5 to 5 wt%.
• Preferred bleach precursors are peroxycarboxylic acid precursors, more especially peracetic acid precursors and pernoanoic acid precursors.
• Especially preferred bleach precursors suitable for use in the present invention are N,N,N' ,N' -tetracetyl ethylenediamine (TAED) and sodium noanoyloxybenzene sulphonate (SNOBS) .
• TAED N,N,N' ,N' -tetracetyl ethylenediamine
• SNOBS sodium noanoyloxybenzene sulphonate
• the novel quaternary ammonium and phosphonium bleach precursors disclosed in US 4 751 015 and US 4 818 426 (Lever Brothers Company) and EP 402 971A(Unilever) , and the cationic bleach precursors disclosed in EP 284 292A and EP 303 520A (Kao) are also of interest.
• the bleach system can be either supplemented with or replaced by a peroxyacid.
• peracids can be found in US 4 686 063 and US 5 397 501 (patent on TPCAP - Unilever) .
• a preferred example is the imido peroxycarboxylic class of peracids described in EP A 325 288, EP A 349 940, DE 382 3172 and EP 325 289.
• a particularly preferred example is phtalimido peroxy caproic acid (PAP) .
• PAP phtalimido peroxy caproic acid
• Such peracids are suitably present at 0.1 - 12%, preferably 0.5 - 10%.
• a bleach stabiliser may also be present.
• Suitable bleach stabilisers include ethylenediamine tetraacetate (EDTA) , the polyphosphonates such as Dequest (Trade Mark) and non-phosphate stabilisers such as EDDS (ethylene diamine di-succinic acid) .
• EDTA ethylenediamine tetraacetate
• Dequest Trade Mark
• EDDS ethylene diamine di-succinic acid
• An especially preferred bleach system comprises a peroxy bleach compound (preferably sodium percarbonate optionally together with a bleach activator) , and a transition metal bleach catalyst as described and claimed in EP 458 397A, EP 458 398A and EP 509 787A (Unilever) .
• a peroxy bleach compound preferably sodium percarbonate optionally together with a bleach activator
• a transition metal bleach catalyst as described and claimed in EP 458 397A, EP 458 398A and EP 509 787A (Unilever) .
• Suitable enzymes include the proteases, amylases, cellulases, oxidases, peroxidases and lipases usable for incorporation in detergent compositions.
• Preferred proteolytic enzymes are, catalytically active protein materials which degrade or alter protein types of stains when present as in fabric stains in a hydrolysis reaction. They may be of any suitable origin, such as vegetable, animal, bacterial or yeast origin.
• proteolytic enzymes or proteases of various qualities and origins and having activity in various pH ranges of from 4-12 are available and can be used in the instant invention.
• suitable proteolytic enzymes are the subtilisins, which are obtained from particular strains of B_. subtilis and £. licheniformis. such as the commercially available subtilisins Maxatase (Trade Mark) , as supplied by Gist- Brocades N.V. , Delft, Holland, and Alcalase (Trade Mark) , as supplied by Novo Industri A/S, Copenhagen, Denmark.
• protease obtained from a strain of Bacillus having maximum activity throughout the pH range of 8-12, being commercially available, e.g. from Novo Industri A/S under the registered trade-names Esperase (Trade Mark) and Savinase (Trade-Mark) .
• Esperase Trade Mark
• Savinase Trade-Mark
• Other commercial proteases are Kazusase (Trade Mark) (obtainable from Showa-Denko of Japan), Optimase (Trade Mark) (from Miles Kali-Chemie, Hannover, West Germany) , and Superase (Trade Mark) (obtainable from Pfizer of U.S.A.).
• Detergency enzymes are commonly employed in granular form in amounts of from about 0.1 to about 3.0 wt%.
• any perfume is suitable for use with the present invention.
• a photofading inhibitor aids the deposition of perfume, this affect is especially pronounced with non-volatile perfume ingredients
• the presence of perfume aids the deposition of the photofading inhibitor.
• compositions of the invention may contain alkali metal, preferably sodium carbonate, in order to increase detergency and ease processing.
• Sodium carbonate may suitably be present in amounts ranging from 1 to 60 wt%, preferably from 2 to 40 wt%.
• compositions containing little or no sodium carbonate are also within the scope of the invention.
• Powder flow may be improved by the incorporation of a small amount of a powder structurant, for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate polymer, or sodium silicate.
• a powder structurant for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate polymer, or sodium silicate.
• One preferred powder structurant is fatty acid soap, suitably present in an amount of from 1 to 5 wt%.
• detergent compositions of the invention include sodium silicate; antiredeposition agents such as cellulosic polymers; inorganic salts such as sodium sulphate; lather control agents or lather boosters as appropriate; proteolytic and lipolytic enzymes; dyes; coloured speckles; foam controllers; fabric softening compounds, soil release polymers, fluorescers and decoupling polymers. This list is not intended to be exhaustive.
• the detergent composition when diluted in the wash liquor (during a typical wash cycle) will give a pH of the wash liquor from 7 to 10.5.
• the detergent components of the present invention may be incorporated in detergent compositions of all physical types, for example, powders, liquids, gels and solid bars.
• Detergent compositions of the invention may be prepared by any suitable method.
• Particulate detergent compositions are suitably prepared by spray-drying a slurry of compatible heat-insensitive ingredients, and then spraying on or postdosing those ingredients unsuitable for processing via the slurry.
• the skilled detergent formulator will have no difficulty in deciding which ingredients should be included in the slurry and which should not.
• Particulate detergent compositions of the invention preferably have a bulk density of at least 400 g/1, more preferably at least 500 g/1.
• compositions have bulk densities of at least 650 g/litre, more preferably at least 700 g/litre.
• Such powders may be prepared either by post-tower densification of spray-dried powder, or by wholly non-tower methods such as dry mixing and granulation; in both cases a high-speed mixer/granulator may advantageously be used.
• Liquid detergent compositions can be prepared by admixing the essential and optional ingredients thereof in any desired order to provide compositions containing components in the requisite concentrations.
• Liquid compositions according to the present invention can also be in compact form which means it will contain a lower level of water compared to a conventional liquid detergent.
• Rinsing 3 rinses at 40:1 L/C, short (2 minute) agitation times
• the Parsol MCX present on the dry fabric was recovered by solvent extraction.
• a 3g piece of knitted cotton was placed in a 20 ml screw top vial, and 15 ml of high purity isopropyl alcohol added.
• the vial was roller mixed for 3 hours on a Luckham Multimix Major, before sonicating for 30 minutes in a small sonic bath.
• the concentration of Parsol MCX present in the extract was then determined by GC/MS analysis (Finnigan Magnum fitted with a 25 metre SGE BPX-5 (non-polar) glass capillary column of internal diameter 0.22mm with a film thickness of 0.25 ⁇ m).
• UV/visible absorbance procedures were also employed as a check of sunscreen deposition level.
• a Perkin Elmer ⁇ 2 spectrometer was used to measure the absorbance of the isopropyl alcohol extract solutions at the ⁇ max of the sunscreen. The amount of sunscreen deposited was determined using a calibration plot obtained from measurement of the absorbance of standard sunscreen solutions.
• NRE NRE Narrow range ethoxylate CTAB Cetyl trimethyl ammonium bromide.
• ARQUAD 2T dimethyl ditallow ammonium chloride (non-hardened)
• Parsol MCX is 2-Ethylhexyl 4-methoxycinnamate with a log P value of 5.2. TABLE 3: Deposition of Parsol MCX on cotton from duplicate washes containing Examples 2 and 3, 5, 6 and Example B and D. Deposition monitored as ppm of Parsol MCX in iso-propyl alcohol extract. Level determined by GC/MS.
• Table 5 Deposition of Parsol MCX on cotton from duplicate washes containing Example A and Example 1. Deposition monitored as ppm of Parsol MCX in iso-propyl alcohol extract. Level determined by measurement of the optical density at the ⁇ mav of Parsol MCX.
• Table 6 shows the comparison of perfume components delivered to cotton fabric from a CTAB/nonionic (10/90) liquid product containing 17% total active.
• the perfume components are quoted as concentration (ppm) in a solvent extract from the washed and dried fabric.
• Table 6 shows the level of perfume deposited onto fabric Examples 4 and Example
• Example 4 contains diethylphthalate which has a logP of 2.15, and Example E contains 2-butoxyethanol which is water soluble and has a logP of 0.84.
• Washes were carried out in a Tergotometer at 20°C using 6g/l of each product over a period of 20 minutes in the presence of 1.14g/l of borax buffer. An initial liquor volume of 1200ml was selected for the first wash. Fabrics were removed after each wash to determine the level of sunscreen deposited on the fabric. The wash liquor volume was reduced in the second and third washes to maintain the liquor to cloth ratio at 30:1. At the end of each wash the fabrics were squeezed to remove excess liquor and rinsed three times at a liquor to cloth ratio of 40:1, before air drying in the dark. Dry white cotton pieces measuring 2"x4.5" taken from each wash were each placed in a glass sample vial and 15ml of ethylacetate added.
• Table 8 Deposition of Tinuvin 328 on cotton from washes containing Example E and Example 4. Deposition monitored as optical density at ⁇ max of Tinuvin 328.

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• 1996
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