EP1678287A1 - Liquid bleaching composition - Google Patents
Liquid bleaching compositionInfo
- Publication number
- EP1678287A1 EP1678287A1 EP04791571A EP04791571A EP1678287A1 EP 1678287 A1 EP1678287 A1 EP 1678287A1 EP 04791571 A EP04791571 A EP 04791571A EP 04791571 A EP04791571 A EP 04791571A EP 1678287 A1 EP1678287 A1 EP 1678287A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- alkyl
- betaine
- weight
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/88—Ampholytes; Electroneutral compounds
- C11D1/90—Betaines
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- 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
- C11D3/3925—Nitriles; Isocyanates or quarternary ammonium nitriles
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- 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
- C11D3/3947—Liquid compositions
Definitions
- the present invention relates to a liquid bleaching composition.
- Bleaching compositions containing a source of active oxygen are well known.
- peroxygen compounds are often included in cleaning compositions to improve their stain-removing properties.
- Peroxygen compounds are relatively unstable and tend to decompose on storage. Thus, bleaching compositions containing such compounds tend, to lose their bleaching power during storage .
- bleach activators have been included in peroxygen-containing compositions.
- a N-methylmorpholinium acetonitrile salt such as N-methylmorpholinium acetonitrile methylsulphate (MMAM) is identified as being an effective activator for peroxygen compounds, such as hydrogen peroxide.
- MMA N-methylmorpholinium acetonitrile salt
- MMAM N-methylmorpholinium acetonitrile methylsulphate
- surfactants may also be included in the composition.
- anionic surfactants and non-ionic surfactants are employed in the Examples.
- liquid bleaching composition comprising: (i) a compound having the structural Formula I
- A is a saturated ring formed of four carbon atoms and an O or S heteroatom in addition to the N_.
- Ri is an alkyl
- R 2 and R 3 are each selected from hydrogen or alkyl
- Y is an anionic counterion
- Z is in the range of 0 to 10; (ii) a source of active oxygen, and (iii)a betaine surfactant.
- composition of the present invention may be used to treat surfaces, for example, for stain-removal .
- the composition of the present invention is a hard surface cleaning composition suitable, for example, for cleaning kitchen and/or bathroom surfaces .
- the composition of the present invention is a laundry cleaning composition.
- the Ri alkyl group may be a straight chain alkyl, a branched chain alkyl or a cyclic alkyl group.
- the alkyl substituent may comprise 1 to 12 carbon atoms, preferably, 1 to 8 carbon atoms, more preferably, 1 to 6 carbon atoms and, most preferably, 1 to 4 carbon atoms.
- the alkyl substituent is selected from methyl, ethyl, propyl and butyl, preferably the alkyl group is methyl.
- the alkyl group may be substituted with other groups, such as aryl and/or alkoxy groups .
- alkylaryl and/or alkoxyalkyl groups may be employed.
- Y is an anionic counterion. Suitable counterions include alkyl sulphate ions, especially methyl sulphate ion. Nitrate and/or sulphate counterions may also be employed.
- Y is selected from alkylsulphate, bisulphate, monosulphate, tosylate and mixtures thereof. Monosulphate and bisulphate salts may exist in equilibrium, the predominance of one over the other being dependent on pH.
- Y is an alkylsulphate, such as a Q_ to C 20 alkylsulphate, for example, methylsulphate, ethylsulphate and propylsulphate .
- Z is in the range of 0 to 10, more preferably, 1 to 6.
- the compound of structural Formula I has the structural Formula II, wherein n is 0 to 24.
- n is 0 to 10, for example, 0.
- the compound of the Formula I is a methyl morpholinium acetonitrile (MMA) salt, such as methyl morpholinium acetonitrile methylsulphate.
- MMA methylsulfate compound of the Formula I is, a commercially available product sold by BASF, currently in a concentrated aqueous solution under the name Sokalan BM.
- the compound of the Formula I may be present in the composition in an amount of 0.01 to 20 weight % of the total composition, preferably, 0.1 to 10 weight %, more preferably, 0.25 to 5 weight %, and most preferably 0.5 to 3 weight %.
- Two or more compounds of the Formula I may be included in the same composition.
- any suitable source of active oxygen may be employed in the present invention. Suitable sources of active oxygen are described in US 6,046,150, the contents of which are incorporated herein by reference. Preferably, a peroxide source, such as hydrogen peroxide, is employed. If desired two or more sources of active oxygen may be employed in the same composition.
- the source of active oxygen may be present in an amount of greater than 0 to 20 weight % of the total composition, preferably, 0.05% to 15 weight %, more preferably, 0.1 to 8 weight %, more preferably, 0.2 to 6 weight %, more preferably 0.25 to 2 weight % of the composition.
- the ratio of the source of active oxygen (preferably peroxide) to the compound of Formula I may be determined as a molar ratio of peroxide to the compound I .
- the molar ratio may be 1:1 to 1000:1, more preferably, 1:1 to 300:1 and most preferably 1:1 to 100:1.
- a preferred source according to the present invention is hydrogen peroxide or sources thereof.
- the hydrogen peroxide source is a water-soluble source of hydrogen peroxide .
- Hydrogen peroxide or sources thereof preferably provide from 0.1% to 12%, preferably from 0.25 to 8% most preferably from 0.5 to 7% by weight of the total composition of active oxygen in said composition.
- the active oxygen concentration refers to the percentage concentration of elemental oxygen, with an oxidation number zero, that could be formed by decomposition of the active oxygen source.
- the amount of elemental oxygen that could be formed from H 2 0 2 is 47%.
- the active oxygen sources according to the present invention are capable of increasing the ability of the compositions to remove oxidisable stains, to destroy malodorous molecules and to kill germs.
- the concentration of available oxygen can be determined by methods known in the art, such as the iodimetric method, the permanganometric method and the cerimetric method. These methods and the criteria for the choice of the appropriate method are described, for example, in "Hydrogen Peroxide", W.C. Schumo, C.N. Statterfield and R.L. entworth, Reinhold Publishing Corporation, New York, 1955 and "Organic Peroxides", Daniel Swern, Editor Wiley Int. Science, 1970.
- the surfactant is found at levels of 0.01 to 25 weight%, ideally from 0.1 to 10 weight %.
- Preferred betaine surfactants herein are according to the formula (RI) (R2) (R3)N + -(CH 2 ) n -Y
- RI is a hydrocarbon chain containing from 1 to 24 carbon atoms, preferably from 10 to 16, more preferably from 12 to 14, wherein R2 and R3 are hydrocarbon chains containing from 1 to 3 carbon atoms, preferably 1 carbon atom, wherein n is an integer from 1 to 10, preferably from 1 to 6, more preferably is 1, Y is selected from the group consisting of carboxyl and sulfonyl radicals and wherein the sum of RI, R2 and R3 hydrocarbon chains is from 14 to 24 carbon atoms.
- betaine surfactants include C12-C18 alkyl dimethyl betaine such as coconutbetaine or C10-C16 alkyl dimethyl betaine such as laurylbetaine.
- coconutbetaine is commercially available from Seppic under the trade name of Amonyl 2659. 5
- Laurylbetaine is commercially available from Albright & Wilson under the trade name Empigen.
- Preferred specific betaines include; coco dimethyl carboxymethyl betaine, lauryl dimethyl carboxymethyl
- betaine lauryl dimethyl alphacarboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, cetyl dimethyl betaine (available as Lonzaine 16SP from Lonza Corp.), lauryl bis- (2-hydroxyethyl) carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine, lauryl 15 bis- (2-
- Mixtures of two or more betaine surfactants may be 25. employed, including as examples are mixtures comprising one or more of the following; octyl betaine, cetyl betaine and oleylbetaine (preferably laurylbetaine) .
- the composition of the present invention may include at least one additional surfactant.
- additional surfactant Mixtures of two or more additional surfactants may be employed. These additional 35 surfactant (s) may form 0 to 20 weight %, preferably, 0.1 to 10 weight % of the composition.
- Suitable additional surfactants include non-ionic surfactants. Examples of non-ionic surfactants are fatty acid alkoxylates, such as fatty acid ethoxylates, especially those of formula R(C 2 H 4 0) n OH, wherein R is a straight or branched C 8 -C_.
- n is at least 1, for example, from 1 to 16, preferably 2 to 12, more preferably 3 to 10.
- the non-ionic surfactant preferably has a hydrophilic- lipophilic balance (HLB) of 3 to 17, more preferably 6 to 15, and most preferably from 7 to 13.
- HLB hydrophilic- lipophilic balance
- Suitable fatty alcohol ethoxylates are those made from alcohols of 12 to 15 carbon atoms and which contain about 7 moles of ethylene oxide. Such materials are commercially marketed under the trademarks Neodol 25- 7 and Neodol 23-6,5 by the Shell Chemical Company. Other useful Neodols include Neodol 1-5, an ethoxylated fatty alcohol averaging 11 carbon atoms in its alkyl chain with about 5 moles of ethylene oxide; Neodol 23-9, an ethoxylated primary C ⁇ 2 ⁇ C ⁇ 3 alcohol having about 9 moles of ethylene oxide; and Neodol 91-10, an ethoxylated Cg-Cn primary alcohol having about 10 moles of ethylene oxide.
- Neodol 45-11 is a similar ethylene oxide condensation products of a fatty alcohol having 14-15 carbon atoms and the number of ethylene oxide groups per mole being about 11. Such products are also available from Shell Chemical Company. Alcohol ethoxylates have also been marked by the Shell Chemical Company under the Dobanol trademark. Dobanol 91-5 is an ethoxylated C 9 -Cn fatty alcohol with an average of 5 moles ethylene oxide and Dobanol 25-7 is an ethoxylated C 12 -C 1 5 fatty alcohol with an average of 7 moles of ethylene oxide per mole of fatty alcohol.
- Suitable ethoxylated alcohol non-ionic surfactants include Tergitol 15-S-7 and Tergitol 15-S-9, both of which are linear secondary alcohol ethoxylat-es available from Union Carbide Corporation.
- Tergitol 15-S- 7 is a mixed ethoxylated product of a Cn-Ci s linear secondary alkanol with 7 moles of ethylene oxide and Tergitol 15-S-9 is the same but with 9 moles of ethylene oxide .
- non-ionic surfactants are, for example, C ⁇ 0 -C ⁇ 8 alkyl polyglycosides, such as C_. 2 -Ci6 alkyl polyglycosides, especially the polyglucosides. These are especially useful when high foaming compositions are desired.
- Further surfactants are polyhydroxy fatty acid amixes, such as C 10 -C 1S N- (3methoxypropyl) glycamides and ethylene oxide-propylene oxide block polymers of the Pluronic type.
- the composition may contain 0 to 20 weight %, preferably, 0.1 to 10 weight % of at least one non-ionic surfactant.
- an anionic surfactant may also be included in the composition of the present invention.
- anionic surface active agents are frequently provided in a salt form, such as alkali metal salts, ammonium salts, amine salts, aminoalcohol salts or magnesium salts.
- sulphate or sulfonate compounds including: alkyl sulfates, alkyl ether sulfates, alkylamidoether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates, alkylsulfonates, alkylamide sulfonates, alkylarylsulfonates, olefinsulfonates, paraffin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkylamide sulfosuccinates, alkyl sulfosuccinate, alkyl sulfoacetates, alkyl phosphates, alkyl ether phosphates, acyl saraconsinates, acyl isethionates, and N-acyl taurates.
- alkyl or acyl radical in these various compounds including: alkyl sulfates
- alkyl sulphate anionic surfactants Particularly preferred are alkyl sulphate anionic surfactants. Most preferred are the non-ethoxylated C_ .2 - 15 primary and secondary alkyl sulphates, especially sodium lauryl sulphate.
- the composition may contain 0 to 20 weight %, preferably, 0.1 to 10 weight % of at least one anionic surfactant.
- the composition of the present invention may include an enzyme.
- the enzyme may be present in an amount of 0 to 10 weight %, preferably, 0 to 5 weight % of the composition.
- said enzymes are preferably selected from cellulases, hemicellulases, proxidases, proteases, gluco- amylases, amylases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, keratanases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, beta -glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase or mixtures thereof .
- Preferred enzymes include protease, amylase, lipase, peroxidases, cutinase and/or cellulose.
- the cellulases usable in the present invention include both bacterial or fungal cellulose. Preferably, they will have a pH optimum of between 5 and 12 and an activity above 50 CEVU (Cellulose Viscosity Unit) .
- CEVU Cellulose Viscosity Unit
- Suitable cellulases are disclosed in US-A-4 ,435, 307, JP- A-61078384 and WO-A-96/02653 which disclose fungal cellulases produced respectively from Humicola insolens, Trichoderma, Thielavia and Sporotrichum.
- EP-A-739 982 describes cellulases isolated from novel Bacillus species. Suitable cellulases are also dis-closed in GB-A- 2.075.028; GB-A-2.095.275 ; DE-OS-2.247.832 and WO-A- 95/26398.
- cellulases are normally incorporated in the detergent composition at levels from 0.0001% to 2% of active enzyme by weight of the detergent composition.
- Peroxidase enzymes are used in combination with oxygen sources, e.g. percarbonate, perborate, persulfate, hydrogen peroxide, etc. They are used for "solution bleaching", i.e. to prevent transfer of dyes or pigments removed from substrates during wash operations to other substrates in the wash solution.
- Peroxidase enzymes are known in the art, and include, for example, horseradish peroxidase, ligninase and haloperoxidase such as chloro- and bromo-peroxidase.
- Peroxidase-containing detergent compositions are disclosed, for example, in WO- A89/099813, WO-A-89/09813 and in EP-A-540784. Also suitable is the laccase enzyme.
- peroxidases are normally incorporated in the detergent composition at levels from 0.0001% to 2% of active enzyme by weight of the detergent composition.
- Suitable lipase enzymes for detergent usage include those produced by microorganisms of the Pseudomonas group, such as Pseudomonas stutzeri ATCC 19.154, as disclosed in GB-A-1 , 372 , 034.
- Suitable lipases include those which show a positive immunological cross- reaction with the antibody of the lipase, produced by the microorganism Pseudomonas fluorescent IAM 1057. This lipase is available from Amano Pharmaceutical Co. Ltd.., Nagoya, Japan, under the trade name Lipase P "Amano", hereinafter referred to as "Amano-P" .
- lipases include Amano-CES, lipases ex Chromobacter viscosum, e.g. Chromobacter viscosum var. lipolyticum NRRLB 3673 from Toyo Jozo Co., Tagata, Japan; Chromobacter viscosum lipases from U.S. Biochemical Corp., U.S.A. and Disoynth Co., The Netherlands, and lipases ex Pseudomonas gladioli.
- lipases such as Ml Lipase TM and Lipomax TM (Gist -Brocades) and Lipolase TM and Lipolase Ultra TM (Novo) which have found to be very effective when used in combination with the compositions of the present invention.
- lipolytic enzymes described in EP-A-258068, WO-A-92/05249 , WO-A-95/22615 , WO-A-94/03578, WO-A-95/35381 and WO-A-96/00292.
- .cutinases [EC 3.1.1.50] which can be considered as a special kind of lipase, namely lipases which do not require interfacial activation. Addition of cutinases to detergent compositions have been described in e.g. WO-A-88/09367; WO-A-90/09446, WO-A-94/14963 and WO-A-94/14964.
- the lipases and/or cutinases are normally incorporated in either or both composition at a level from 0.0001% to 2% of active enzyme by weight of the composition.
- Suitable proteases are the subtilisins which are obtained from particular strains of B. subtilis and B. licheniformis (subtilisin BPN and BPN') .
- One suitable protease is obtained from a strain of Bacillus, having maximum activity throughout the pH range of 9-12, developed and sold as ESPERAS ⁇ TM by Novo Industries A/S of Denmark, hereinafter "Novo" .
- the preparation of this enzyme and analogous enzymes is described in GB-A- 1,243,784 to Novo.
- proteases include ALCALASE TM, DURAZYM TM and SAVINASE TM from Novo and MAXATASE TM, MAXACAL TM, PROPERASE TM and MAXAPEM TM (protein engineered Maxacal) from Gist-Brocades .
- proteases also encompass modified bacterial serine proteases, such as those described in EP-A-292623 (particularly pages 17, 24 and 98) , and which is called herein "Protease B", and in EP-A-199, 404 , which refers to a modified bacterial serine protealytic enzyme which is called "Protease A" herein.
- Protease C is a variant of an alkaline serine protease from Bacillus in which lysine replaced arginine at position 27, tyrosine replaced valine at position 104, serine replaced asparagines at position 123, and alanine replaced threonine at position 274.
- Protease C is described in WO-A-91/06637. Genetically modified variants, particularly of Protease C, are also included herein.
- the proteolytic enzymes are incorporated in either or both compositions at a level of from 0.0001% to 2%, preferably from 0.001% to 0.2%, more preferably from 0.005% to 0.1% pure enzyme by weight of the composition.
- Amylases (alpha and/or beta) can be included for removal of carbohydrate-based stains.
- WO-A-94/02597 describes cleaning compositions which incorporate mutant amylases. See also WO-A-95/10603.
- Other amylases known for use in cleaning compositions include both alpha - and beta - amylases.
- Alpha-amylases are known in the art and include those disclosed in US-A-5, 003 , 257 ; EP-A-252 , 666 ; WO-A-/91/00353; FR-A-2 , 676 , 456 ; EP-A-285 , 123 ; EP-A- 525,610; EP-A-368 , 341 ; and GB-A-1, 296 , 839.
- Other suitable amylases are stability-enhnced amylases described in WO-A-94/18314 and WO-A-96/05295 and amylase variants having additional modification in the immediate parent available from Novo Nordisk A/S, disclosed in W0- A-95/10603. Also suitable are amylases described in EP- A-277,216, WO-A-95/26397 and WO-A-96/23873.
- amylolytic enzymes are incorporated in either or both compositions at a level of from 0.0001% to 2%, preferably from 0.00018% to 0.06%, more preferably from 0.00024% to 0.048% pure enzyme by weight of the composition.
- composition of the present invention includes a polymer.
- Suitable polymers are those that are water-soluble and include polycarboxylate polymers (such as those than can be purchased by Rohm and Haas under the Acusol 445N name) and polycarboxylic acid copolymers (such as can be purchased under the Sokalan CP9 name by BASF) .
- the polymer may be included in an amount of 0 to 5 weight %, preferably 0.01 to 2 weight % of the total composition.
- the pH of the total composition after mixing the two formulations is preferably between 7 and 10.
- the composition of the invention should have a pH of less than 2 , and preferably around 1.
- the pH of the composition of the invention may be adjusted by the addition of a suitable acid.
- composition of the invention may contain further up to 15, 10 or 5 (preferably less than 5) weight % of at least one component selected from a fragrance, dye, sequestrant, chelating agent, germicide, preservative, corrosion inhibitor and antioxidant. Mixtures of two or more of such components may also be included.
- composition of the present invention may be dispensed using any suitable dispenser.
- a multi- compartment dispenser such as a two-compartment dispenser, is employed.
- a multi-compartment dispenser comprising: a first compartment containing a composition of the present invention, and a second compartment containing a composition comprising an alkaline source, preferably also a buffer, and optionally at least one component selected from an anionic surfactant, a non ionic surfactant, a polymer, and an enzyme.
- a first compartment of the multi-compartment container may be used to contain a first composition comprising a compound of the Formula I as described above, a source of active oxygen as described above and a betaine surfactant as described above .
- the second compartment contains a second composition.
- the amount of the compound of the Formula I may be 0.01 to 20 weight % of the total composition, preferably, 0.2 to 10 weight %, more preferably, 0.5 to 8 weight %, most preferably 3- 1 to 5 weight % of the first composition.
- the first composition includes an acid, such as sulphuric acid and/or phosphoric acid, for example, in an amount of 0 to 5 weight % of the first composition.
- an acid such as sulphuric acid and/or phosphoric acid, for example, in an amount of 0 to 5 weight % of the first composition.
- the pH of the first composition is less than 5, ideally less than 3 or 2. In a preferred embodiment, the pH is about 1.
- one or more further components selected from an enzyme, effervescent agent, polymer, non-ionic surfactant and anionic surfactant, may be included in the first composition.
- an enzyme effervescent agent, polymer, non-ionic surfactant and anionic surfactant
- Suitable enzymes, effervescent agents, polymers, non- ionic surfactants and anionic surfactants are described above.
- the first composition is devoid of enzymes.
- Other components such as surfactants, fragrances, dyes, sequestrants, chelating agents, germicides, preservatives, corrosion inhibitors and/or antioxidants may be included in the second composition, for example, in amounts of 0 to 20 weight %, preferably 0.01 to 10 weight % .
- the first composition is preferably aqueous.
- the aqueous composition may be in the form of a concentrated aqueous solution, which is intended to be diluted prior to use.
- the second composition comprises an alkaline source .
- Suitable bases to act as an alkaline source include hydroxides, carbonates, bicarbonates, sequicarbonates, hydroxides and silicates. Preferably, such bases are absent from the first composition. However, pH buffers, such as carbonate/bicarbonate, citric acid/citrates, borate/boric acid or phosphates/phosphoric acid mixtures, may be included in the second composition.
- the second composition contains at least one effervescent agent, for example, in the form of a base, such as a carbonate or a bicarbonate. Suitable bases are described in further detail above.
- the effervescent agent may be present in an amount of from 0 to 30 weight %, preferably, 1 to 15 weight % of the second composition.
- the second composition additionally or alternatively includes one or more anionic surfactants and/or non-ionic surfactants.
- the total amount of anionic and/or non-ionic surfactant in the second composition preferably 0.01 to 20 weight %, more preferably, 1 to 10 weight %.
- Enzymes may optionally be included in the second composition, for example, in an amount of 0 to 5 weight % of the second composition.
- the pH of the second composition is equal to or higher than the final mixed pH of the total composition according to the invention.
- the pH of the total composition when the first and second compositions are mixed may be 6 to 10, for example, about 9.
- the second composition is preferably aqueous.
- a pH adjusting agent may be included.
- the alkalising agent ideally comprises a base. Suitable bases are selected from hydroxides, carbonates, bicarbonates, sequicarbonates, hydroxides, and silicates. Buffering agents like bicarbonate/carbonate, citric acid/citrates, borate/boric or phosphate salts are especially useful to enable formulators to obtain specific pH values and avoid pH drift when mixing the two compositions for optimum performance.
- An alkalising agent may be used in an amount of 0.1 to 10 weight %, but actual levels will depend on which alkaline material is used and what the target end pH will be.
- a buffering agent may also be included in the second composition. Suitable buffering systems are selected from: carbonate/bicarbonate, citric acid/citrates, borate/boric acid or phosphates/phosphoric acid. Such buffering agents may be employed in an amount of 0 to 10 weight % of the second composition.
- the contents of the first compartment and the second compartment may be delivered simultaneously or sequentially.
- the first and second composition are mixed immediately prior to or as they are being applied to a surface.
- the resulting mixture preferably has a pH of greater than 7, for example, 8 to 10.
- the contents of the two compartments may be delivered to a surface either directly or in the form of a diluted • aqueous solution.
- the multi-component dispenser preferably includes means for delivering a mixture of at least part of the contents of the first compartment and second compartment.
- Suitable multi-compartment containers include squez dispensers, gravity-driven dispensers and spray dispensers. Examples of such dispensers are described in US 576725, WO 0185595, EP 0479451, respectively.
- the composition of the present invention and/or the second composition preferably contains water.
- Water may be present in an amount of 0 to up to 100 weight %, preferably, 1 to 99 or 50 to 99 weight %, more preferably, 50 to 98 or 75 to 98 weight %, for example, 80 to 97 weight % of the composition.
- Example 1
- MMAM methyl morpholinium acetonitrile methylsulphate
- the surfactant under test was added to an aqueous composition containing 1 weight % H 2 0 2 and 1.1 weight % MMAM (1.7 weight % Sokalan BM) The active amount of surfactant in the composition was 1 weight %. In a control sample, no surfactant was added.
- Example 1 was repeated in the presence of 2 weight % of Dowanol PnB (n-butyl monoether of propylene glycol solvent . As can be seen from Table 2 , the solvent did not have a significant effect on stability.
- Dowanol PnB n-butyl monoether of propylene glycol solvent
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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GB0324554A GB2407325B (en) | 2003-10-22 | 2003-10-22 | Liquid composition |
PCT/GB2004/004461 WO2005042686A1 (en) | 2003-10-22 | 2004-10-21 | Liquid bleaching composition |
Publications (2)
Publication Number | Publication Date |
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EP1678287A1 true EP1678287A1 (en) | 2006-07-12 |
EP1678287B1 EP1678287B1 (en) | 2007-08-29 |
Family
ID=29595539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04791571A Not-in-force EP1678287B1 (en) | 2003-10-22 | 2004-10-21 | Dispenser containing liquid bleaching composition |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1678287B1 (en) |
AT (1) | ATE371715T1 (en) |
DE (1) | DE602004008660T2 (en) |
ES (1) | ES2289568T3 (en) |
GB (1) | GB2407325B (en) |
WO (1) | WO2005042686A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5739327A (en) * | 1995-06-07 | 1998-04-14 | The Clorox Company | N-alkyl ammonium acetonitrile bleach activators |
US6010994A (en) * | 1995-06-07 | 2000-01-04 | The Clorox Company | Liquid compositions containing N-alkyl ammonium acetonitrile salts |
US6211130B1 (en) * | 1997-08-21 | 2001-04-03 | Henkel Kommanditgesellschaft Auf Aktien | Use of quaternary acetonitrile compounds as activators for detergents |
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2003
- 2003-10-22 GB GB0324554A patent/GB2407325B/en not_active Expired - Fee Related
-
2004
- 2004-10-21 WO PCT/GB2004/004461 patent/WO2005042686A1/en active IP Right Grant
- 2004-10-21 AT AT04791571T patent/ATE371715T1/en not_active IP Right Cessation
- 2004-10-21 EP EP04791571A patent/EP1678287B1/en not_active Not-in-force
- 2004-10-21 ES ES04791571T patent/ES2289568T3/en active Active
- 2004-10-21 DE DE602004008660T patent/DE602004008660T2/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2005042686A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2289568T3 (en) | 2008-02-01 |
EP1678287B1 (en) | 2007-08-29 |
ATE371715T1 (en) | 2007-09-15 |
DE602004008660D1 (en) | 2007-10-11 |
WO2005042686A1 (en) | 2005-05-12 |
GB0324554D0 (en) | 2003-11-26 |
GB2407325B (en) | 2006-01-11 |
DE602004008660T2 (en) | 2008-06-05 |
GB2407325A (en) | 2005-04-27 |
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