Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
  • C11D3/38618—Protease or amylase in liquid compositions only
• • 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
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
  • C11D3/38627—Preparations containing enzymes, e.g. protease or amylase containing lipase
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/39—Organic or inorganic per-compounds
  • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
  • C11D3/3905—Bleach activators or bleach catalysts
  • C11D3/3907—Organic compounds
  • C11D3/391—Oxygen-containing 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
  • C11D3/39—Organic or inorganic per-compounds
  • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
  • C11D3/3905—Bleach activators or bleach catalysts
  • C11D3/3907—Organic compounds
  • C11D3/3917—Nitrogen-containing compounds

Definitions

• the present invention relates to a cleaning composition for providing effective stain removal.
• Peroxygen bleach compounds are well known for their ability to remove stains from substrates. Such bleaching agents include hydrogen peroxide, or substances that can generate perhydroxyl radical, such as inorganic or organic peroxides. Generally, the peroxygen bleach compound or hydrogen peroxide must be activated. One method of activation is to employ wash temperatures greater than 60 °C. High temperatures required for activation of the peroxygen bleach compound often damage the fabric dyes, and can also cause premature damage to the substrate or fabric. Another known approach of activation is the use of organic precursor compounds along with peroxygen bleach compound.
• bleach activators additives into compositions having peroxygen bleach compound improves bleaching activity at lower wash temperatures, e.g. 40 to 60 °C.
• bleach activators are tetraacetylethylenediamine (TAED) and sodium
• nonanoyloxybenzenesulphonate (NOBS).
• the bleach activators react with the perhydroxide anion (OOH-) of the hydrogen peroxide released by the peroxygen bleach compound in the aqueous solution to form a peroxyacid which is more reactive as a bleaching agent than the peroxide bleach alone.
• a hydrophobic bleach activator used with the peroxygen bleach compound is effective on hydrophobic bleachable stains, such as burnt fat (like butter), tomato-sauce, cosmetics (like lipstick), but have limited performance on hydrophilic bleachable stains, such as tea or red wine stains.
• a hydrophilic bleach activator when used with peroxygen bleach compound is effective on hydrophilic bleachable stains, but shows limited performance on hydrophobic bleachable stains.
• Two or more bleach activators are often used together to activate peroxygen bleach compounds in order to make the bleach composition effective towards hydrophilic as well as hydrophobic stains.
• W01 1 1 17617A1 (Reckitt & Colman, 201 1 ) which discloses a cleaning composition having a dispersion of a particle in acidic aqueous phase for providing stability before use and performance in use.
• the particle includes an admixture of tetraacetylethylenediamine (TAED) and
• DOBA decanoyloxybenzenecarboxylic acid
• US 2009130224 A1 (Borchers et.al., 2009) discloses an improved bleach activator and bleach activator compositions in the form of granules having TAED and DOBA for use in washing, cleaning and disinfectant compositions.
• the application discloses a granular bleach activating mixture of TAED and DOBA in which the mixture is free of binders.
• US 20081 13036 A1 discloses an improved bleach activator and bleach activator compositions having synergistic effects on difficult to remove stains such as grass and curry.
• the application discloses a mixture of bleach activators based on hydroxybenzoic acids and particular peracetic acid-releasing activators. This further discloses washing composition, cleaning composition and disinfectant having the activator mixtures in the form of co-granules of bleach component together with hydrogen peroxide-generating substance.
• the present invention provides for a cleaning composition comprising:
• composition comprises:
• the present invention provides for a method of bleaching a bleachable substrate comprising the steps of:
• the third aspect disclosed is a use of the cleaning composition of the first aspect for bleaching stains.
• a fourth aspect disclosed is a use of the cleaning composition of the first aspect for bleaching fruity or sebum stains on fabrics.
• cleaning composition includes hydrogen peroxide or a peroxygen bleach compound capable of yielding hydrogen peroxide in aqueous solution, a first bleach activator, a second bleach activator, a protease and a lipase or an amylase or mixtures thereof.
• Disclosed cleaning composition may be in different forms including but not limited to powders, tablets, liquids, bars, crystals, gels, capsules or in the form of non-aqueous liquids or carried on sheets or other substrates or in pouches.
• the cleaning composition described herein can be used to make any cleaning preparation which can be used for the purpose of bleaching any suitable substrate, for example, laundry cleaning, laundry bleaches, bleach pre-treaters, hard surface cleaning (including cleaning of lavatories, kitchen work surfaces, floors, mechanical ware washing etc.) or automatic dishwashing compositions.
• the disclosed cleaning composition is a granular detergent composition.
• the cleaning composition is a granular detergent composition it may be of a low to moderate bulk density.
• the known methods for manufacturing a granular detergent composition includes spray-drying, drum drying, fluid bed drying, and scraped film drying preferably using the wiped film evaporator.
• the granular detergent composition may be in a 'concentrated' or 'compact' form.
• Such detergent composition may be prepared by mixing and granulating process, for example, using a high-speed mixer or granulator, or other non- tower process.
• the first bleach activator and the second bleach activator may be post dosed as particulates.
• the pH of the aqueous solution on dissolution of the detergent composition is 6 to 12 and more preferably from 7 to 10.5.
• Peroxygen bleach compound :
• Disclosed composition includes a peroxygen bleach compound capable of yielding hydrogen peroxide in aqueous solution.
• Hydrogen peroxide sources are well known in the art. Hydrogen peroxide sources are described in details in Kirk Othmer's
• Suitable peroxygen bleach compounds include hydrogen peroxide or any of its solid adducts such as organic peroxides example; urea peroxide and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates. Mixtures of two or more such compounds may also be suitable.
• Preferred inorganic persalts are sodium perborate monohydrate and tetrahydrate, and sodium percarbonate. Hydrogen peroxide is especially preferred in liquid cleaning compositions.
• Percarbonate is stable during storage and dissolves quickly in the cleaning liquor and is especially preferred. It is believed that such rapid dissolution results in the formation of higher levels of percarboxylic acid and, thus, enhances substrate bleaching performance.
• Highly preferred percarbonate is in uncoated or coated form. Preferably the average particle size of uncoated and coated percarbonate ranges from about 400 to about 1200 ⁇ , most preferably from about 400 to about 600 ⁇ . If coated percarbonate is used, the preferred coating materials include mixtures of carbonate and sulphate, zeolite, precipitated silica, waxes, borates, polymers, citrates, silicate, borosilicate or fatty acids.
• the disclosed cleaning composition has 4 to 35 wt% of the peroxygen bleach compound.
• the peroxygen bleach compound may be present at even higher levels of up to 90wt% of the composition.
• the cleaning composition is a detergent composition the composition has 5 to 20 wt % more preferably 10 to 15 wt% of the peroxygen bleach compound.
• Disclosed composition includes a first bleach activator and a second bleach activator.
• the ratio of the first bleach activator to the second bleach activator is from 5:1 to 1 :5, preferably from 3:1 to 1 :3 and further preferably from 2:1 to 1 :2, and most preferably 1 :1.
• the bleach activator may be in the form of a powder or as particulate bodies having the bleach activator, a binder or agglomerating agent. It is preferred for reasons of stability and handling, that bleach activator is in the form of particulate bodies.
• the weight ratio of bleach activator to hydrogen peroxide or peroxygen bleach compound capable of yielding hydrogen peroxide in aqueous solution is from 1 :2 to 1 :20 more preferably from 1 :2 to 1 :15 and still preferably from 1 :5 to 1 :10.
• Disclosed cleaning composition includes a first bleach activator having a precursor of peracetic acid.
• the first bleach activator is preferably a compound from the class of polyacylated alkylenediamines.
• polyacylated alkylenediamines is tetraacetylethylenediamine (TAED).
• Disclosed cleaning composition include 0.1 wt% to 20 wt%, preferably from 0.5 wt% to 10 wt% and optimal composition include 1 wt% to 5 wt% of the first bleach activator.
• Disclosed cleaning composition includes a second bleach activator having a precursor of C 8 to On peroxyacid.
• the second bleach activator is hydroxybenzoic acid derivative of the formula (I) in which R is C 8 -Cn alkyl group.
• the second bleach activator is decanoyloxybenzoic acid (DOBA) and derivatives thereof.
• DOBA decanoyloxybenzoic acid
• Disclosed composition includes a protease and a lipase or amylase or a mixture thereof.
• Disclosed cleaning composition includes a protease.
• Suitable protease includes those of animal, vegetable or microbial origin. Protease from microbial origin is preferred.
• protease may also be chemically modified or protein engineered mutant.
• the protease is a serine protease or a metallo protease, preferably an alkaline microbial protease or a trypsin-like protease.
• alkaline proteases are subtilisins, especially those derived from Bacillus, examples include subtilisin Novo, subtilisin Carlsberg, subtilisin 309, subtilisin147 and subtilisin 168 (described WO8906279A1 ).
• trypsin-like proteases are trypsin from porcine or bovine origin and the Fusarium protease described in WO8906270A1 and W09425583A1.
• the protease is preferably from B.subtilis.
• Preferred commercially available protease includes
• AlcalaseTM SavinaseTM, PrimaseTM, DuralaseTM, DyrazymTM, EsperaseTM, EverlaseTM, PolarzymeTM, and KannaseTM, MaxataseTM, MaxacalTM, MaxapemTM, ProperaseTM, Purfast® , Effectenz® , PurafectTM, Purafect OxPTM, FN2TM, and FN3TM (Genencor International Inc.).
• Protease from a strain of Bacillus having maximum activity throughout the pH range of 8 to 12 is highly preferred and includes commercially available EsperaseTM and SavinaseTM.
• the cleaning composition of the present invention include 0.001 wt% to 10 wt% more preferably from 0.01 wt% to wt% of protease depending upon their activity.
• Disclosed cleaning composition includes a lipase.
• Lipase catalyses hydrolysis of ester bonds of edible fats and oils, i.e. triglycerides, into free fatty acids, mono- and diglycerides and glycerol.
• Preferred lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola species (incl. Thermomyces. species) which includes lipase from H. lanuginosus (T. lanuginosus) as described in EP0258068B1 and EP0305216B1 or from H.
• insolens as described in WO9613580A1 or lipases from Pseudomonas species which includes lipase from P. alcaligenes or P. pseudoalcaligenes (EP0218272 A1 ), P. cepacia (EP0331376B1 ), P. stutzeri (GB 1 ,372,034), P. fluorescens, Pseudomonas species strain SD 705 (WO95/06720 and WO96/27002), P. wisconsinensis
• lipases from Bacillus species which includes lipases from B. subtilis (Dartois et al. (1993), Biochemica et Biophysica Acta, 1 131 , 253-360), B.
• stearothermophilus JP64/744992
• B. pumilus WO 91/16422
• Other examples include lipase variants such as those described in WO92/05249, WO94/01541 , EP407225, EP260105, W095/35381 , WO96/00292, WO95/30744, W094/25578, W095/14783, W095/22615, WO97/04079 and WO97/07202.
• Preferred commercially available lipases are available under the trademarks
• Lipoclean®, Lipolase®, Lipolase® Ultra and Lipex ® is particularly preferred, and LIPEX® 100 T is further particularly preferred.
• the activity of commercial lipase is commonly expressed as Lipase Units or LU. Different lipase preparations may have different activities. For fungal lipases these may range from 2,000 to 2,000,000 LU per gram. Preferred compositions include lipase having 5 to 20000LU/g.
• lipases In order to prevent accidents and to alleviate safety concerns, commercial lipases are always coated with an inert material. Therefore, commercial lipases that are used for detergent powders, bars and tablets are in granular form containing very low amount of active lipase and balance of adjunct materials. Such granulates contain lipase concentrate, inorganic salt, binders and coating materials. They are free-flowing so that there is no lumping, and the granulate dissolve faster. Lipases are also available in liquid form, example LIPEX ® 100 L.
• Preferred cleaning composition has 0.0001wt% to 0.3wt% lipase, more preferably from 0.0001 to 0.1wt% lipase and further preferably 0.0009wt% to 0.00186 wt% lipase.
• Disclosed cleaning composition includes an amylase.
• Suitable amylases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of amylase suitable for the present invention includes alpha-amylase obtained from Bacillus species which includes special strain of B. Iicheniformis, described in more detail in GB 1 ,296,839, or the Bacillus species strains disclosed in WO 95/026397 or WO 00/060060.
• amylases are the variants described in WO 94/02597, WO 94/18314, WO 96/23873, WO 97/43424, WO 01/066712, WO 02/010355 and WO 02/031 124 (which references all incorporated by reference).
• amylases are Duramyl(TM), Termamyl(TM), Termamyl Ultra(TM), Natalase(TM), Stainzyme(TM), Stainzyme Plus(TM), Fungamyl(TM) and BAN(TM) (Novozymes A/S), Rapidase(TM) and Purastar(TM) (from Genencor
• the disclosed composition includes mannanase.
• suitable mannanase include those of bacterial or fungal origin.
• the mannanase is derived from a strain of a filamentous fungus genus Aspergillus, preferably Aspergillus niger or Aspergillus aculeatus (WO 94/25576).
• WO 93/24622 disclosing a mannanase isolated from Trichoderma reese is also preferred.
• Mannanases have also been isolated from several bacteria, including Bacillus species. For example, Talbot et al.,Appl. Environ. Microbiol., Vol.56, No. 1 1 , pp. 3505-3510 (1990) describes a beta- mannanase derived from Bacillus stearothermophilus. Mendoza et al., World J.
• Microbiol. Biotech., Vol. 10, No. 5, pp. 551 -555 (1994) describes a beta-mannanase derived from Bacillus subtilis.
• JP-A-03047076 discloses a beta-mannanase derived from Bacillus sp.
• JP-A-63056289 describes the production of an alkaline, thermostable beta- mannanase.
• JP-A-63036775 relates to the Bacillus microorganism FERM P-8856 which produces beta-mannanase and beta-mannosidase.
• JP-A-08051975 discloses alkaline beta-mannanases from alkalophilic Bacillus sp. AM-001.
• a purified mannanase from Bacillus amyloliquefaciens is disclosed in WO 97/1 1 164.
• mannanases examples include Mannaway(TM) available from Novozymes A/S Denmark.
• Disclosed cleaning composition preferably includes a surfactant.
• the surfactant may be a soap or an anionic, nonionic, amphoteric, zwitterionic or cationic surfactant or mixtures thereof.
• the nonionic and anionic surfactant may be chosen from the surfactants described in "Surface Active Agents” Vol. 1 , by Schwartz and Perry, Interscience 1949, Vol. 2 by Schwartz, Perry and Berch, Interscience 1958, in the current edition of "McCutcheon ' s Emulsifiers and Detergents" published by
• Suitable anionic surfactant includes water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl includes the alkyl portion of higher acyl radicals.
• suitable synthetic anionic surfactant are sodium and potassium alkyl sulphates. Especially preferred are the sodium and potassium sulphates obtainable by sulphating higher C 8 to Ci 8 alcohols for example from tallow or coconut oil.
• Other preferred anionic surfactant include sodium and potassium alkyl C 9 to C 20 benzene sulphonates, particularly sodium linear secondary alkyl Ci 0 to Ci 5 benzene
• alkyl glyceryl ether sulphates especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
• anionic surfactants are sodium lauryl ether sulfate (SLES), particularly preferred are anionic surfactant with 1 to 3 ethoxy groups, sodium C 10 to C 15 alkyl benzene sulphonates (LAS) and sodium C 12 to C 18 alkyl sulphates (PAS).
• Alkyl ester suphonates such as methyl ester sulphonates (MES) may be preferably used for replacing a portion or completely replacing the anionic surfactant.
• MES methyl ester sulphonates
• Other suitable surfactants are those described in EP-A-328 177 (Unilever), which shows resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074 and alkyl monoglycosides.
• the surfactant chain may be branched or linear.
• Suitable nonionic surfactants include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
• Preferred nonionic surfactants are C 6 to C22 alkyl phenol-ethylene oxide condensates, generally having 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic C 8 to C 18 primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 50 EO.
• the non-ionic is 10 to 50 EO, more preferably 20 to 35 EO.
• Alkyl ethoxylates are particularly preferred.
• Soaps may also be present.
• the fatty acid soap used preferably contains from about 16 to about 22 carbon atoms, preferably in a straight chain configuration.
• Preferred soap may be derived from saturated and non-saturated fatty acids obtained from natural sources and synthetically prepared. Examples of such fatty acids include capric, lauric, myristic, palmitic, stearic, oleic, linoleic and linolenic acid.
• the anionic contribution from soap is preferably from 0 to 30 wt% of the total anionic.
• Preferred surfactant systems are mixtures of anionic with nonionic surfactant, in particular the groups and examples of anionic and nonionic surfactants pointed out in EP-A-346 995 (Unilever). Amounts of amphoteric or zwitterionic surfactants can also be used in the compositions of the invention but this is not normally desired owing to their relatively high cost. If any amphoteric or zwitterionic surfactants are used, it is generally in small amounts in combinations with anionic and nonionic surfactants.
• the compositions according to the invention include 2 wt% to 70wt% of surfactant more preferably 10 to 30wt%.
• Preferred compositions include anionic or non-ionic surfactants. More preferred compositions include a mixture of the two.
• Disclosed cleaning composition may include builders.
• Builders may be selected from 1 ) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
• calcium sequestrant materials include alkali metal polyphosphates, such as sodium tripolyphosphate and organic sequestrants, such as ethylene diamine tetra- acetic acid.
• precipitating builder materials examples include sodium orthophosphate and sodium carbonate.
• Examples of calcium ion-exchange builder materials include the various types of water- insoluble crystalline or amorphous aluminosilicates, of which zeolites are the best known representatives and includes zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in
• EP-A-O, 384, 070 It is preferred that when an insoluble inorganic builder for example zeolite is used, the size is in the range 0.1 to 10 ⁇ (as measured by The Mastersizer 2000 particle size analyzer using laser diffraction ex MalvernTM).
• the cleaning composition is a detergent composition in the form of granular, spray- dried or dry-blended powder, the level of builder is preferably from 1 to 40 wt%.
• the detergent composition includes zeolite and carbonate (including bicarbonate and sesquicarbonate) builders.
• the composition may also contain other builders including crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably sodium aluminosilicate.
• zeolite and carbonate including bicarbonate and sesquicarbonate
• the composition may also contain other builders including crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably sodium aluminosilicate.
• phosphate builders may be used.
• the term phosphate includes diphosphate, triphosphate, and phosphonate species.
• builder examples include silicates, such as soluble silicates, metasilicates, layered silicates (e.g. SKS-6 from Hoechst). Builders or complexing agent as
• ethylenediaminetetraacetic acid diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid may also be included.
• Many builders are also bleach- stabilising agents by virtue of their ability to complex metal ions.
• Disclosed cleaning composition may include one or more of other ingredients selected from bleach stabiliser, polymers, perfumes, fluorescers, soil release polymers, germicides, colourants and coloured speckles such as blue speckles. This list is not intended to be exhaustive.
• composition may include a bleach stabiliser.
• bleach stabilisers include ethylenediamine tetraacetate (EDTA), ethylenediamine disuccinate (EDDS), and the aminopolyphosphonates such as ethylenediamine tetramethylene
• ETMP diethylenetriamine pentamethylene phosphonate
• the composition may include one or more polymers.
• polymers include carboxymethylcellulose, poly (ethylene glycol), poly (vinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.
• Suitable commercially available polymer includes Sokalan CP5 (ex BASF) which is a polyacrylate, namely maleic acid-acrylic acid copolymer, with a sodium salt.
• Disclosed cleaning composition may also include perfumes.
• the perfumes could be of natural origin or synthetic. They include single compounds or mixtures of compounds.
• perfume in this context is not only meant a fully formulated product delivering fragrance, but includes selected components of that fragrance, particularly those which are prone to loss, such as the so-called top notes.
• the perfume may be used in the form of neat oil or in an encapsulated form.
• composition may also include fluorescent agent (optical brightener).
• Fluorescent agents are well known and many fluorescent agents are commercially available. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
• the total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt%, more preferably 0.01 to 0.1 wt%.
• Preferred fluorescent agent includes but not limited to di- styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, diamine stilbene di- sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH and pyrazoline compounds, e.g. Blankophor SN.
• Preferred fluorescers are:
• Tinopal® DMS is the disodium salt of disodium 4,4'-bis ⁇ [(4-anilino-6-morpholino-1 ,3,5-triazin-2-yl)]amino ⁇ stilbene-2-2' disulfonate.
• Tinopal® CBS is the disodium salt of disodium 4,4'-bis(2- sulfostyryl)biphenyl.
• composition may include a soil release polymer, for example sulphonated and unsulphonated PET/PEOT polymers, both end-capped and non-end-capped, and polyethylene glycol/polyvinyl alcohol graft copolymers such as Sokolan (Trade Mark) HP22.
• a soil release polymer for example sulphonated and unsulphonated PET/PEOT polymers, both end-capped and non-end-capped, and polyethylene glycol/polyvinyl alcohol graft copolymers such as Sokolan (Trade Mark) HP22.
• Sokolan Trade Mark
• Especially preferred soil release polymer are the sulphonated non-end-capped polyesters described and claimed in W09532997A (Rhodia Chimie).
• Soil release index is a measure of the amount of a stain present on fabric that is removed during a washing process. The intensity of any stain after washing is measured by means of a spectrophotometer and expressed in terms of the difference between the stained fabric and a clean fabric giving ⁇ * for each stain. It is defined as ⁇ * and is calculated as:
• L * , a * , and b * are the coordinates of the CIE 1976 (L * , a * , b * ) colour space, determined using a standard spectrophotometer.
• ⁇ * can be measured before and after the stain is washed, to give AE * bw (before wash) and AE * aw (after wash).
• ⁇ after wash is the difference in L a b colour space between the clean (unwashed) fabric and the stained fabric after wash. So a ⁇ after wash of zero means that a stain is completely removed.
• SRI is defined as:
• a SRI of 100 means complete removal of a stain. The higher the SRI value, the greater is the stain removal potential.
• the clean (or virgin) fabric is an "absolute standard" which is not washed. For each experiment, it refers to an identical piece of fabric to that to which the stain is applied. Therefore, its point in L a b colour space stays constant.
• Control A control detergent composition (Control) was prepared with a ratio between first bleach activator (TAED) to second bleach activator (DOBA) of 1 :1. Control composition was formulated with no enzymes. Other standard laundry detergents were also included. The composition of Control is provided in Table 1.
• Preferred detergent composition Ex 1 and Ex 2 had a ratio between first bleach activator (TAED) to second bleach activator (DOBA) of 1 :1.
• Ex 1 was formulated with a combination of protease and amylase.
• Ex 2 was formulated with a combination of protease and lipase.
• the composition of preferred detergent compositions is provided in Table 1 .
• Said machine wash protocol is as follows:
• the total wash liquor used was 6 liters.
• the water used had a hardness 24° French hardness.
• the wash load was 1.5 kg.
• the wash load included the stained cotton swatches and two SBL soil strips and the liquor to cloth ratio was 4:1. The stained cotton swatches were not soaked before washing.
• the delta SRI value after wash was determined as the difference between the absolute SRI value for a stained cotton swatch washed with the preferred composition and absolute SRI value for a stained cotton swatch washed with the control composition.
• Delta SRI (absolute SRI of stained cotton swatch washed with preferred composition) - (absolute SRI of stained cotton swatch washed with control composition)
• a delta SRI value higher than the LSD (Least significant difference) value indicates a statistically significant difference between the absolute SRI values of stained swatch washed with the preferred composition and the absolute SRI value of stained swatch washed with control composition.
• the preferred granular detergent composition Comp 3 was prepared with a ratio between first bleach activator (TAED) to second bleach activator (DOBA) of 1 :1 and having the enzymes protease, amylase and lipase. Other standard laundry detergents were also included.
• the formulation of Comp 3 is provided in Table 3.
• Table 4 clearly shows that the preferred composition (Comp 3) having a combination of bleach activators TAED, DOBA and enzymes protease, lipase and amylase shows statistically significant improvement in removal of sebum stain when compared to the commercially available comparative composition (ArielTM Actilift UK ).

Landscapes

• 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)
• Inorganic Chemistry (AREA)
• Detergent Compositions (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47325952

Family Applications (1)

Country Status (8)

Cited By (5)

Families Citing this family (2)

Citations (3)

Family Cites Families (7)

• 2013
  • 2013-11-26 CN CN201380064792.2A patent/CN104837980A/zh active Pending
  • 2013-11-26 WO PCT/EP2013/074757 patent/WO2014090573A1/en active Application Filing
  • 2013-11-26 AU AU2013357709A patent/AU2013357709B2/en not_active Ceased
  • 2013-11-26 BR BR112015011173A patent/BR112015011173A2/pt not_active Application Discontinuation
  • 2013-11-26 EP EP13799259.0A patent/EP2931864B1/en not_active Revoked
• 2015
  • 2015-06-09 SA SA515360548A patent/SA515360548B1/ar unknown
  • 2015-06-10 CL CL2015001611A patent/CL2015001611A1/es unknown
  • 2015-06-12 ZA ZA2015/04272A patent/ZA201504272B/en unknown

Patent Citations (3)

Also Published As

Similar Documents

Legal Events