EP0756622B1 - Compositions de blanchiment comprenant une enzyme protease - Google Patents
Compositions de blanchiment comprenant une enzyme protease Download PDFInfo
- Publication number
- EP0756622B1 EP0756622B1 EP95914188A EP95914188A EP0756622B1 EP 0756622 B1 EP0756622 B1 EP 0756622B1 EP 95914188 A EP95914188 A EP 95914188A EP 95914188 A EP95914188 A EP 95914188A EP 0756622 B1 EP0756622 B1 EP 0756622B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- caprolactam
- valerolactam
- compositions
- bleaching
- bleach
- 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.)
- Expired - Lifetime
Links
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- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
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- 150000004685 tetrahydrates Chemical class 0.000 description 1
- MSLRPWGRFCKNIZ-UHFFFAOYSA-J tetrasodium;hydrogen peroxide;dicarbonate Chemical compound [Na+].[Na+].[Na+].[Na+].OO.OO.OO.[O-]C([O-])=O.[O-]C([O-])=O MSLRPWGRFCKNIZ-UHFFFAOYSA-J 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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- QQOWHRYOXYEMTL-UHFFFAOYSA-N triazin-4-amine Chemical class N=C1C=CN=NN1 QQOWHRYOXYEMTL-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
-
- 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
- C11D3/38609—Protease or amylase in solid compositions only
Definitions
- the present invention relates to cleaning and bleaching compositions which employ protease enzymes to boost performance especially on dingy stains and soil. Bleaching, fabric laundering, automatic dishwashing and sanitizing compositions with improved bleach activity are provided.
- bleach activators and peroxygen bleaching compounds can be used with certain levels of protease enzymes in bleaching compositions to obtain surprisingly effective dingy soil clean-up.
- the combined effect of the bleach activators, peroxygen bleaching compound and the proteases, which hydrolyzes protein based stains, is greater in this bleaching composition than expected, especially in light of the fact that bleach is known to oxidize enzymes.
- amido-derived bleach activators in laundry detergents is described in U.S. Patent U.S. Patent 4,634,551. Lactam activators are described in copending applications Serial Nos. 08/064,624; 08/064,562; 08/196,322; and 08/082,270.
- Protease enzymes are described in EP 90915958:4; U.S. Patent No. 5,185,250; U.S. Patent No. 5,204,015; copending Application U.S. Serial No.08/136,797; and copending Application U.S. Serial No. 08/136,626.
- the present invention encompasses bleach compositions which provide dingy clean-up comprising protease enzymes, a bleaching agent or compound capable of yielding hydrogen peroxide in an aqueous liquor, and one or more specific bleach activators, such that the combined performance of the bleach activator/bleaching compound and the protease enzyme as measured by the Hunter Whiteness Value is more than additive.
- Modified protease bacterial serine protease enzymes obtained from Bacillus subtilis , Bacillus lentus or Bacillus licheniformis are preferred. Said enzymes comprise at least 0.001%, preferably from 0.001% to 5%, of the detergent compositions.
- Preferred bleaching agents are members selected from the group consisting of H 2 O 2 , perborate, percarbonate, persulfate and mixtures thereof. Particularly preferred bleaching agents comprise percarbonate or perborate bleach, or mixtures thereof.
- the bleach activators are selected from acyl lactam-type activators.
- activators which are employed in the present invention include benzoyl caprolactam, nonanoyl caprolactam, benzoyl valerolactam, nonanoyl valerolactam, 3,5,5-trimethylhexanoyl caprolactam, 3,5,5-trimethylhexanoyl valerolactam, octanoyl caprolactam, octanoyl valerolactam, decanoyl caprolactam, decanoyl valerolactam, undecenoyl caprolactam, undecenoyl valerolactam.
- Examples of highly preferred substituted benzoyl lactams include methylbenzoyl caprolactam, methylbenzoyl valerolactam, ethylbenzoyl caprolactam, ethylbenzoyl valerolactam, propylbenzoyl caprolactam, propylbenzoyl valerolactam, isopropylbenzoyl caprolactam, isopropylbenzoyl valerolactam, butylbenzoyl caprolactam, butylbenzoyl valerolactam, tert-butylbenzoyl caprolactam, tert-butylbenzoyl valerolactam, pentylbenzoyl caprolactam, pentylbenzoyl valerolactarn, hexylbenzoyl caprolactam, hexylbenzoyl valerolactam, ethoxybenzoyl caprolactam, ethoxybenz
- bleach activators selected from the group consisting of benzoyl caprolactam, benzoyl valerolactam, nonanoyl caprolactam, nonanoyl valerolactam, 4-nitrobenzoyl caprolactam, 4-nitrobenzoyl valerolactam, octanoyl caprolactam, octanoyl valerolactam, decanoyl caprolactam, decanoyl valerolactam, undecanoyl caprolactam, undecanoyl valerolactam, 3,5,5-trimethylhexanoyl caprolactam, 3,5,5-trimethylhexanoyl valerolactam, dinitrobenzoyl caprolactam, dinitrobenzoyl valerolactam, terephthaloyl dicaprolactam, terephthaloyl divalerolactam, and mixtures thereof.
- the molar ratio of hydrogen peroxide yielded by the peroxygen bleaching compound to bleach activator is greater than 1.0. Most preferably, the molar ratio of hydrogen peroxide to bleach activator is at least 1.5.
- the invention also encompasses detergent compositions, especially laundry detergents, comprising otherwise conventional surfactants and other detersive ingredients.
- dingy soils and stains are the result of combinations of fatty soils and particulate soils.
- Fatty soils comprise lipids, proteins, and pigments that are deposited on fabrics from contact with human or animal skin. The majority of lipids are secreted from the sebecous gland as sebum. Proteins and pigments from skin fragments are liberated by the breakdown of skin cells.
- Particulate soils comprise mostly airborne soil and floor/ground dust. It is believed that sebum is the major soil present on laundry, and its removal is important because unremoved fat acts as a matrix to hold particulate soils. Further it is believed that compounds present in the sebum oxidize to contribute to yellowing of fabrics. Particulate soils include topsoil and products produced during the incomplete combustion of petroleum products.
- W Hunter Whiteness Values
- compositions of the present invention comprise protease enzyme and bleach activator/bleach compounds at levels such that the Hunter Whiteness Value for the composition is more than additive, i.e., the W for the composition is greater than the sum of the W's for compositions without protease plus the W's for compositions without the bleach activator/bleach compound as determined by a statistically significant number of tests.
- Protease enzymes are usually present in such commercial preparations at levels sufficient to provide at least about 0.005 Anson units (AU) of activity per gram of composition. Therefore, said enzymes comprise at least 0.001%, preferably from 0.001% to 5%, of the detergent compositions.
- proteases are the subtilisins which are obtained from particular strains of B.subtilis, B. lentus and B.licheniforms.
- Another suitable protease is a modified bacterial serine protease enzyme obtained from Bacillus subtilis or Bacillus licheniformis, having maximum activity throughout the pH range of 8-12, developed and sold by Novo Industries A/S under the registered trade name ESPERASE. The preparation ofthis enzyme and analogous enzymes is described in British Patent Specification No. 1,243,784 of Novo.
- Proteolytic enzymes suitable for removing protein-based stains include those sold under the tradenames ALCALASE and SAVINASE by Novo Industries A/S (Denmark) and MAXATASE by International Bio-Synthetics, Inc. (The Netherlands).
- Other proteases include Protease A (see European Patent Application 130,756, published January 9, 1985) and Protease B (see European Patent Application 251 446, filed April 28, 1987, and European Patent Application 130,756, Bott et al, published January 9, 1985).
- Protease C is a variant of an alkaline serine protease from Bacillus , particularly Bacillus lentus , in which arginine replaced lysine at position 27, tyrosine replaced valine at position 104, serine replaced asparagine at position 123, and alanine replaced threonine at position 274.
- Protease C is described in EP 451 244; U.S. Patent No 5,185,250; and U.S. Patent No. 5,204,015.
- protease which are described in copending Application U.S. Serial No.08/136,797, entitled Protease-Containing Cleaning Compositions and copending Application U.S. Serial No. 08/136,626, entitled Bleaching Compositions Comprising Protease Enzymes, which are incorporated herein by reference. Genetically modified variants, panicularly of Protease C, are also included herein.
- Bleaching Compounds- Bleaching compositions herein contain bleaching mixtures containing a bleaching agent and one or more bleach activators, in an amount sufficient to provide bleaching of the stain or stains of interest.
- Bleaching agents will typically be at levels of from 1% to 80%, more typically from 5% to 20%, of the detergent composition, especially for fabric laundering.
- Bleach and pre-soak compositions may comprise from 5% to 99% of the bleaching agent.
- the amount of bleach activators will typically be from 0.1% to 60%, more typically from 0.5% to 40% of the bleaching mixture comprising the bleaching agent-plus-bleach activator.
- the bleaching agents used herein can be any of the bleaching agents useful for detergent compositions in textile cleaning, hard surface cleaning, or other cleaning purposes that are now known or become known. These include oxygen bleaches as well as other bleaching agents.
- Perborate bleaches e.g., sodium perborate (e.g., mono- or tetra-hydrate) can be used herein.
- Peroxygen bleaching agents are preferably used in the compositions. Suitable peroxygen bleaching compounds include sodium carbonate peroxyhydrate and equivalent "percarbonate” bleaches, sodium pyrophosphate peroxyhydrate, urea peroxyhydrate, and sodium peroxide. Persulfate bleach (e.g., OXONE, manufactured commercially by DuPont) can also be used.
- a preferred percarbonate bleach comprises dry particles having an average particle size in the range from 500 micrometers to 1,000 micrometers, not more than 10% by weight of said particles being smaller than 200 micrometers and not more than 10% by weight of said particles being larger than 1,250 micrometers.
- the percarbonate can be coated with silicate, borate or water-soluble surfactants.
- Percarbonate is available from various commercial sources such as FMC, Solvay and Tokai Denka.
- compositions of the present invention may also comprise mixtures of bleaching activators.
- Peroxygen bleaching agents, the perborates, the percarbonates, etc. are preferably combined with bleach activators, which lead to the in situ production in aqueous solution (i.e., during the washing process) of the peroxy acid corresponding to the bleach activator.
- washing solutions wherein the pH of such solution is between about 8.5 and 10.5 and preferably between 9.5 and 10.5 in order to facilitate the perhydrolysis reaction.
- pH can be obtained with substances commonly known as buffering agents, which are optional components of the bleaching systems herein.
- a class of bleach activators includes the acyl lactam activators, especially acyl caprolactams and acyl valerolactams of the formulae: wherein R 6 is H, an alkyl, aryl, alkoxyaryl, or alkaryl group containing from 1 to 12 carbon atoms, or a substituted phenyl group containing from 6 to 18 carbons.
- R 6 is H, an alkyl, aryl, alkoxyaryl, or alkaryl group containing from 1 to 12 carbon atoms, or a substituted phenyl group containing from 6 to 18 carbons.
- activators which may also comprise the bleach compositions disclosed herein include those in U.S. Patent 4,915,854, issued April 10, 1990 to Mao et al, and U.S. Patent 4,412,934 See also U.S. 4,634,551 for other typical bleaches and activators useful herein.
- compositions herein can optionally include one or more other detergent adjunct materials or other materials for assisting or enhancing cleaning performance, treatment of the substrate to be cleaned, or to modify the aesthetics of the detergent composition (e.g., perfumes, colorants, dyes, etc.).
- other detergent adjunct materials e.g., perfumes, colorants, dyes, etc.
- the following are illustrative examples of such adjunct materials.
- the conventional nonionic and amphoteric surfactants such as the C 12 -C 18 alkyl ethoxylates ("AE") including the so-called narrow peaked alkyl ethoxylates and C 6 -C 12 alkyl phenol alkoxylates (especially ethoxylates and mixed ethoxy/propoxy), C 12 -C 18 betaines and sulfobetaines ("sultaines"), C 10 -C 18 amine oxides, and the like, can also be included in the overall compositions.
- the C 10 -C 18 N-alkyl polyhydroxy fatty acid amides can also be used. Typical examples include the C 12 -C 18 N-methylglucamides. See WO 9,206,154.
- sugar-derived surfactants include the N-alkoxy polyhydroxy fatty acid amides, such as C 10 -C 18 N-(3-methoxypropyl) glucamide.
- the N-propyl through N-hexyl C 12 -C 18 glucamides can be used for low sudsing.
- C 10 -C 20 conventional soaps may also be used. If high sudsing is desired, the branched-chain C 10 -C 16 soaps may be used. Mixtures of anionic and nonionic surfactants are especially useful. Other conventional useful surfactants are listed in standard texts.
- Builders - Detergent builders can optionally be included in the compositions herein to assist in controlling mineral hardness. Inorganic as well as organic builders can be used. Builders are typically used in fabric laundering compositions to assist in the removal of particulate soils.
- the level of builder can vary widely depending upon the end use of the composition and its desired physical form.
- the compositions will typically comprise at least 1% builder.
- Liquid formulations typically comprise from 5% to 50%, more typically 5% to 30%, by weight, of detergent builder.
- Granular formulations typically comprise from 10% to 80%, more typically from 15% to 50% by weight, of the detergent builder. Lower or higher levels of builder, however, are not meant to be excluded.
- Inorganic or P-containing detergent builders include, but are not limited to, the alkali metal, ammonium and alkanolammonium salts of polyphosphates (exemplified by the tripolyphosphates, pyrophosphates, and glassy polymeric metaphosphates), phosphonates, phytic acid, silicates, carbonates (including bicarbonates and sesquicarbonates), sulphates, and aluminosilicates.
- polyphosphates exemplified by the tripolyphosphates, pyrophosphates, and glassy polymeric metaphosphates
- phosphonates phosphonates
- phytic acid e.g., silicates
- carbonates including bicarbonates and sesquicarbonates
- sulphates sulphates
- aluminosilicates aluminosilicates.
- non-phosphate builders are required in some locales.
- compositions herein function surprisingly well even in the presence of the so-called “weak” builders (as compared with phosphates) such as citrate, or in the so-called “underbuilt” situation that may occur with zeolite or layered silicate builders.
- silicate builders are the alkali metal silicates, particularly those having a SiO 2 :Na 2 O ratio in the range 1.6:1 to 3.2:1 and layered silicates, such as the layered sodium silicates described in U.S. Patent 4,664,839, issued May 12, 1987 to H. P. Rieck.
- NaSKS-6 is the trademark for a crystalline layered silicate marketed by Hoechst (commonly abbreviated herein as "SKS-6").
- Hoechst commonly abbreviated herein as "SKS-6”
- the Na SKS-6 silicate builder does not contain aluminum.
- NaSKS-6 has the delta-Na 2 SiO 5 morphology form of layered silicate.
- SKS-6 is a highly preferred layered silicate for use herein, but other such layered silicates, such as those having the general formula NaMSi x O 2x+1 ⁇ yH 2 O wherein M is sodium or hydrogen, x is a number from 1.9 to 4, preferably 2, and y is a number from 0 to 20, preferably 0 can be used herein.
- Various other layered silicates from Hoechst include NaSKS-5, NaSKS-7 and NaSKS-11, as the alpha, beta and gamma forms.
- delta-Na 2 SiO 5 (NaSKS-6 form) is most preferred for use herein.
- Other silicates may also be useful such as for example magnesium silicate, which can serve as a crispening agent in granular formulations, as a stabilizing agent for oxygen bleaches, and as a component of suds control systems.
- carbonate builders are the alkaline earth and alkali metal carbonates as disclosed in German Patent Application No. 2,321,001 published on November 15, 1973.
- Aluminosilicate builders are useful in the present invention.
- Aluminosilicate builders are of great importance in most currently marketed heavy duty granular detergent compositions, and can also be a significant builder ingredient in liquid detergent formulations.
- Aluminosilicate builders include those having the empirical formula: M z (zAlO 2 ) y ] ⁇ xH 2 O wherein z and y are integers of at least 6, the molar ratio of z to y is in the range from 1.0 to 0.5, and x is an integer from 15 to 264.
- aluminosilicate ion exchange materials are commercially available. These aluminosilicates can be crystalline or amorphous in structure and can be naturally-occurring aluminosilicates or synthetically derived. A method for producing aluminosilicate ion exchange materials is disclosed in U.S. Patent 3,985,669, Krummel, et al, issued October 12, 1976. Preferred synthetic crystalline aluminosilicate ion exchange materials useful herein are available under the designations Zeolite A, Zeolite P (B), Zeolite MAP and Zeolite X.
- the crystalline aluminosilicate ion exchange material has the formula: Na 12 [(AlO 2 ) 12 (SiO 2 ) 12 ] ⁇ xH 2 O wherein x is from 20 to 30, especially 27.
- This material is known as Zeolite A.
- the aluminosilicate has a particle size of about 0.1-10 microns in diameter.
- Organic detergent builders suitable for the purposes of the present invention include, but are not restricted to, a wide variety of polycarboxylate compounds.
- polycarboxylate refers to compounds having a plurality of carboxylate groups, preferably at least 3 carboxylates.
- Polycarboxylate builder can generally be added to the composition in acid form, but can also be added in the form of a neutralized salt. When utilized in salt form, alkali metals, such as sodium, potassium, and lithium, or alkanolammonium salts are preferred.
- polycarboxylate builders include a variety of categories of useful materials.
- One important category of polycarboxylate builders encompasses the ether polycarboxylates, including oxydisuccinate, as disclosed in Berg, U.S Patent 3,128,287, issued April 7, 1964, and Lamberti et al, U.S. Patent 3,635,830, issued January 18, 1972. See also "TMS/TDS" builders of U.S. Patent 4,663,071, issued to Bush et al, on May 5, 1987.
- Suitable ether polycarboxylates also include cyclic compounds, particularly alicyclic compounds, such as those described in U.S. Patents 3,923,679; 3,835,163; 4,158,635; 4,120,874 and 4,102,903.
- ether hydroxypolycarboxylates copolymers of maleic anhydride with ethylene or vinyl methyl ether, 1, 3, 5-trihydroxy benzene-2, 4, 6-trisulphonic acid, and carboxymethyloxysuccinic acid
- various alkali metal, ammonium and substituted ammonium salts of polyacetic acids such as ethylenediamine tetraacetic acid and nitrilotriacetic acid
- polycarboxylates such as mellitic acid, succinic acid, oxydisuccinic acid, polymaleic acid, benzene 1,3,5-tricarboxylic acid, carboxymethyloxysuccinic acid, and soluble salts thereof.
- Citrate builders e.g., citric acid and soluble salts thereof (particularly sodium salt), are polycarboxylate builders of particular importance for heavy duty liquid detergent formulations due to their availability from renewable resources and their biodegradability. Citrates can also be used in granular compositions, especially in combination with zeolite and/or layered silicate builders. Oxydisuccinates are also especially useful in such compositions and combinations.
- succinic acid builders include the C 5 -C 20 alkyl and alkenyl succinic acids and salts thereof.
- a particularly preferred compound of this type is dodecenylsuccinic acid.
- succinate builders include: laurylsuccinate, myristylsuccinate, palmitylsuccinate, 2-dodecenylsuccinate (preferred), 2-pentadecenylsuccinate, and the like. Laurylsuccinates are the preferred builders of this group, and are described in European Patent Application 86200690.5/0,200,263, published November 5, 1986.
- Fatty acids e.g., C 12 -C 18 monocarboxylic acids
- the aforesaid builders especially citrate and/or the succinate builders, to provide additional builder activity.
- Such use of fatty acids will generally result in a diminution of sudsing, which should be taken into account by the formulator.
- the various alkali metal phosphates such as the well-known sodium tripolyphosphates, sodium pyrophosphate and sodium onhophosphate can be used.
- Phosphonate builders such as ethane-1-hydroxy-1,1-diphosphonate and other known phosphonates (see, for example, U.S Patents 3,159,581; 3,213,030; 3,422,021; 3,400,148 and 3,422,137) can also be used.
- Enzymes - Optional enzymes can be included in the formulations herein for a wide variety of fabric laundering purposes, including removal of protein-based, carbohydrate-based, or triglyceride-based stains, for example, and for the prevention of refugee dye transfer, and for fabric restoration.
- the enzymes to be incorporated include amylases, lipases, cellulases, and peroxidases, as well as mixtures thereof.
- Other types of enzymes may also be included. They may be of any suitable origin, such as vegetable, animal, bacterial, fungal and yeast origin. However, their choice is governed by several factors such as pH-activity and/or stability optima, thermostability, stability versus active detergents, builders and so on. In this respect bacterial or fungal enzymes are preferred, such as bacterial amylases and fungal cellulases.
- Enzymes are normally incorporated at levels sufficient to provide up to about 5 mg by weight, more typically about 0.01 mg to about 3 mg, of active enzyme per gram of the composition. Stated otherwise, the compositions herein will typically comprise from 0.001% to 5%, preferably 0.01%-1% by weight of a commercial enzyme preparation.
- Amylases include, for example, ⁇ -amylases described in British Patent Specification No. 1,296,839 (Novo), RAPIDASE, International Bio-Synthetics, Inc. and TERMAMYL, Novo Industries.
- the cellulase usable in the present invention include both bacterial or fungal cellulase. Preferably, they will have a pH optimum of between 5 and 9.5.
- Suitable cellulases are disclosed in U.S. Patent 4,435,307, Barbesgoard et al, issued March 6, 1984, which discloses fungal cellulase produced from Humicola insolens and Humicola strain DSM1800 or a cellulase 212-producing fungus belonging to the genus Aeromonas, and cellulase extracted from the hepatopancreas of a marine mollusk (Dolabella Auricula Solander) suitable cellulases are also disclosed in GB-A-2.075.028; GB-A-2.095.275 and DE-OS-2.247.832. CAREZYME (Novo) is especially useful.
- 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 British Patent 1,372,034. See also lipases in Japanese Patent Application 53,20487, laid open to public inspection on February 24, 1978. This lipase is available from Amano Pharmaceutical Co. Ltd., Nagoya, Japan, under the trade name Lipase P "Amano,” hereinafter referred to as "Amano-P.” Other commercial lipases include Amano-CES, lipases ex Chromobacter viscosum, e.g. Chromobacter viscosum var.
- lipolyticum NRRLB 3673 commercially available from Toyo Jozo Co., Tagata, Japan; and further Chromobacter viscosum lipases from U S. Biochemical Corp., U.S.A. and Disoynth Co., The Netherlands, and lipases ex Pseudomonas gladioli.
- the LIPOLASE enzyme derived from Humicola lanuginosa and commercially available from Novo is a preferred lipase for use herein.
- 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 PCT International Application WO 89/099813, published October 19, 1989, by O.Kirk, assigned to Novo Industries A/S.
- Patent 3,600,319 issued August 17, 1971 to Gedge, et al, and European Patent Application Publication No. 0 199 405, Application No. 86200586.5, published October 29, 1986, Venegas. Enzyme stabilization systems are also described, for example, in U.S. Patent 3,519,570.
- Enzyme Stabilizers The enzymes employed herein are stabilized by the presence of water-soluble sources of calcium and/or magnesium ions in the finished compositions which provide such ions to the enzymes. (Calcium ions are generally somewhat more effective than magnesium ions and are preferred herein if only one type of cation is being used.) Additional stability can be provided by the presence of various other art-disclosed stabilizers, especially borate species: see Severson, U.S. 4,537,706. Typical detergents, especially liquids, will comprise from 1 to 30, preferably from 2 to 20, more preferably from 5 to 15, and most preferably from 8 to 12, millimoles of calcium ion per liter of finished composition.
- the level of calcium or magnesium ions should be selected so that there is always some minimum level available for the enzyme, after allowing for complexation with builders, fatty acids, etc., in the composition.
- Any water-soluble calcium or magnesium salt can be used as the source of calcium or magnesium ions, including, but not limited to, calcium chloride, calcium sulfate, calcium malate, calcium maleate, calcium hydroxide, calcium formate, and calcium acetate, and the corresponding magnesium salts.
- a small amount of calcium ion generally from about 0.05 to about 0.4 millimoles per liter, is often also present in the composition due to calcium in the enzyme slurry and formula water.
- the formulation may include a sufficient quantity of a water-soluble calcium ion source to provide such amounts in the laundry liquor. In the alternative, natural water hardness may suffice.
- compositions herein will typically comprise from 0.05% to 2% by weight of a water-soluble source of calcium or magnesium ions, or both.
- the amount can vary, of course, with the amount and type of enzyme employed in the composition.
- compositions herein may also optionally, but preferably, contain various additional stabilizers, especially borate-type stabilizers.
- additional stabilizers especially borate-type stabilizers.
- such stabilizers will be used at levels in the compositions from 0.25% to 10%, preferably from about 0.5% to about 5%, more preferably from 0.75% to 3%, by weight of boric acid or other borate compound capable of forming boric acid in the composition (calculated on the basis of boric acid).
- Boric acid is preferred, although other compounds such as boric oxide, borax and other alkali metal borates (e.g., sodium ortho-, meta- and pyroborate, and sodium pentaborate) are suitable.
- Substituted boric acids e.g., phenylboronic acid, butane boronic acid, and p-bromo phenylboronic acid
- Polymeric Soil Release Agent Any polymeric soil release agent known to those skilled in the art can optionally be employed in the compositions and processes of this invention.
- Polymeric soil release agents are characterized by having both hydrophilic segments, to hydrophilize the surface of hydrophobic fibers, such as polyester and nylon, and hydrophobic segments, to deposit upon hydrophobic fibers and remain adhered thereto through completion of washing and rinsing cycles and, thus, serve as an anchor for the hydrophilic segments. This can enable stains occurring subsequent to treatment with the soil release agent to be more easily cleaned in later washing procedures.
- the polymeric soil release agents useful herein especially include those soil release agents having: (a) one or more nonionic hydrophile components consisting essentially of (i) polyoxyethylene segments with a degree of polymerization of at least 2, or (ii) oxypropylene or polyoxypropylene segments with a degree of polymerization of from 2 to 10, wherein said hydrophile segment does not encompass any oxypropylene unit unless it is bonded to adjacent moieties at each end by ether linkages, or (iii) a mixture of oxyalkylene units comprising oxyethylene and from 1 to about 30 oxypropylene units wherein said mixture contains a sufficient amount of oxyethylene units such that the hydrophile component has hydrophilicity great enough to increase the hydrophilicity of conventional polyester synthetic fiber surfaces upon deposit of the soil release agent on such surface, said hydrophile segments preferably comprising at least 25% oxyethylene units and more preferably, especially for such components having 20 to 30 oxypropylene units, at least 50% oxyethylene units; or (b)
- the polyoxyethylene segments of (a)(i) will have a degree of polymerization of from 200, although higher levels can be used, preferably from 3 to 150, more preferably from 6 to 100.
- Suitable oxy C 4 -C 6 alkylene hydrophobe segments include, but are not limited to, end-caps of polymeric soil release agents such as MO 3 S(CH 2 ) n OCH 2 CH 2 O-, where M is sodium and n is an integer from 4-6, as disclosed in U.S. Patent 4,721,580, issued January 26, 1988 to Gosselink.
- Polymeric soil release agents useful in the present invention also include cellulosic derivatives such as hydroxyether cellulosic polymers, copolymeric blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate, and the like. Such agents are commercially available and include hydroxyethers of cellulose such as METHOCEL (Dow). Cellulosic soil release agents for use herein also include those selected from the group consisting of C 1 -C 4 alkyl and C 4 hydroxyalkyl cellulose; see U.S. Patent 4,000,093, issued December 28, 1976 to Nicol, et al.
- Soil release agents characterized by poly(vinyl ester) hydrophobe segments include graft copolymers of poly(vinyl ester), e.g., C 1 -C 6 vinyl esters, preferably poly(vinyl acetate) grafted onto polyalkylene oxide backbones, such as polyethylene oxide backbones.
- poly(vinyl ester) e.g., C 1 -C 6 vinyl esters
- poly(vinyl acetate) grafted onto polyalkylene oxide backbones such as polyethylene oxide backbones.
- Commercially available soil release agents of this kind include the SOKALAN type of material, e.g., SOKALAN HP-22, available from BASF (West Germany).
- One type of preferred soil release agent is a copolymer having random blocks of ethylene terephthalate and polyethylene oxide (PEO) terephthalate.
- the molecular weight of this polymeric soil release agent is in the range of from about 25,000 to about 55,000. See U.S. Patent 3,959,230 to Hays, issued May 25, 1976 and U.S. Patent 3,893,929 to Basadur issued July 8, 1975.
- Another preferred polymeric soil release agent is a polyester with repeat units of ethylene terephthalate units contains 10-15% by weight of ethylene terephthalate units together with 90-80% by weight of polyoxyethylene terephthalate units, derived from a polyoxyethylene glycol of average molecular weight 300-5,000.
- this polymer include the commercially available material ZELCON 5126 (from Dupont) and MILEASE T (from ICI). See also U.S. Patent 4,702,857, issued October 27, 1987 to Gosselink.
- Another preferred polymeric soil release agent is a sulfonated product of a substantially linear ester oligomer comprised of an oligomeric ester backbone of terephthaloyl and oxyalkyleneoxy repeat units and terminal moieties covalently attached to the backbone.
- These soil release agents are described fully in U.S. Patent 4,968,451, issued November 6, 1990 to J.J. Scheibel and E.P. Gosselink.
- Other suitable polymeric soil release agents include the terephthalate polyesters of U.S. Patent 4,711,730, issued December 8, 1987 to Gosselink et al, the anionic end-capped oligomeric esters of U.S. Patent 4,721,580, issued January 26, 1988 to Gosselink, and the block polyester oligomeric compounds of U.S. Patent 4,702,857, issued October 27, 1987 to Gosselink.
- Preferred polymeric soil release agents also include the soil release agents of U.S. Patent 4,877,896, issued October 31, 1989 to Maldonado et al, which discloses anionic, especially sulfoarolyl, end-capped terephthalate esters.
- soil release agents will generally comprise from 0.01% to 10.0%, by weight, of the detergent compositions herein, typically from 0.1% to 5%, preferably from 0.2% to 3.0%.
- Still another preferred soil release agent is an oligomer with repeat units of terephthaloyl units, sulfoisoterephthaloyl units, oxyethyleneoxy and oxy-1,2-propylene units.
- the repeat units form the backbone of the oligomer and are preferably terminated with modified isethionate end-caps.
- a particularly preferred soil release agent of this type comprises about one sulfoisophthaloyl unit, 5 terephthaloyl units, oxyethyleneoxy and oxy-1,2-propyleneoxy units in a ratio of from 1.7 to 1.8, and two end-cap units of sodium 2-(2-hydroxyethoxy)-ethanesulfonate.
- Said soil release agent also comprises from 0.5% to 20%, by weight of the oligomer, of a crystalline-reducing stabilizer, preferably selected from the group consisting of xylene sulfonate, cumene sulfonate, toluene sulfonate, and mixtures thereof.
- a crystalline-reducing stabilizer preferably selected from the group consisting of xylene sulfonate, cumene sulfonate, toluene sulfonate, and mixtures thereof.
- the detergent compositions herein may also optionally contain one or more iron and/or manganese chelating agents.
- chelating agents can be selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelating agents and mixtures therein, all as hereinafter defined. Without intending to be bound by theory, it is believed that the benefit of these materials is due in part to their exceptional ability to remove iron and manganese ions from washing solutions by formation of soluble chelates.
- Amino carboxylates useful as optional chelating agents include ethylenediaminetetracetates, N-hydroxyethylethylenediaminetriacetates, nitrilotriacetates, ethylenediamine tetraproprionates, triethylenetetraaminehexacetates, diethylenetriaminepentaacetates, and ethanoldiglycines, alkali metal, ammonium, and substituted ammonium salts therein and mixtures therein.
- Amino phosphonates are also suitable for use as chelating agents in the compositions of the invention when at lease low levels of total phosphorus are permitted in detergent compositions, and include ethylenediaminetetrakis (methylenephosphonates) as DEQUEST. Preferred, these amino phosphonates to not contain alkyl or alkenyl groups with more than about 6 carbon atoms.
- Polyfunctionally-substituted aromatic chelating agents are also useful in the compositions herein. See U.S. Patent 3,812,044, issued May 21, 1974, to Connor et al.
- Preferred compounds of this type in acid form are dihydroxydisulfobenzenes such as 1,2-dihydroxy-3,5-disulfobenzene.
- EDDS ethylenediamine disuccinate
- [S,S] isomer as described in U.S. Patent 4,704,233, November 3, 1987, to Hartman and Perkins.
- these chelating agents will generally comprise from about 0.1% to about 10% by weight of the detergent compositions herein. More preferably, if utilized, the chelating agents will comprise from about 0.1% to about 3.0% by weight of such compositions.
- compositions of the present invention can also optionally contain water-soluble ethoxylated amines having clay soil removal and antiredeposition properties.
- Granular detergent compositions which contain these compounds typically contain from 0.01% to 10.0% by weight of the water-soluble ethoxylates amines; liquid detergent compositions typically contain 0.01% to 5%.
- the most preferred soil release and anti-redeposition agent is ethoxylated tetraethylenepentamine. Exemplary ethoxylated amines are further described in U.S. Patent 4,597,898, VanderMeer, issued July 1, 1986.
- Another group of preferred clay soil removal-antiredeposition agents are the cationic compounds disclosed in European Patent Application 111,965, Oh and Gosselink, published June 27, 1984.
- Other clay soil removal/antiredeposition agents which can be used include the ethoxylated amine polymers disclosed in European Patent Application 111,984, Gosselink, published June 27, 1984; the zwitterionic polymers disclosed in European Patent Application 112,592, Gosselink, published July 4, 1984; and the amine oxides disclosed in U.S.
- CMC carboxy methyl cellulose
- Polymeric Dispersing Agents can advantageously be utilized at levels from 0.1% to 7%, by weight, in the compositions herein, especially in the presence of zeolite and/or layered silicate builders.
- Suitable polymeric dispersing agents include polymeric polycarboxylates and polyethylene glycols, although others known in the art can also be used. It is believed, though it is not intended to be limited by theory, that polymeric dispersing agents enhance overall detergent builder performance, when used in combination with other builders (including lower molecular weight polycarboxylates) by crystal growth inhibition, particulate soil release peptization, and anti-redeposition.
- Polymeric polycarboxylate materials can be prepared by polymerizing or copolymerizing suitable unsaturated monomers, preferably in their acid form.
- Unsaturated monomeric acids that can be polymerized to form suitable polymeric polycarboxylates include acrylic acid, maleic acid (or maleic anhydride), fumaric acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid and methylenemalonic acid.
- the presence in the polymeric polycarboxylates herein or monomeric segments, containing no carboxylate radicals such as vinylmethyl ether, styrene, ethylene, etc. is suitable provided that such segments do not constitute more than about 40% by weight.
- Particularly suitable polymeric polycarboxylates can be derived from acrylic acid.
- acrylic acid-based polymers which are useful herein are the water-soluble salts of polymerized acrylic acid.
- the average molecular weight of such polymers in the acid form preferably ranges from 2,000 to 10,000, more preferably from 4,000 to 7,000 and most preferably from 4,000 to 5,000.
- Water-soluble salts of such acrylic acid polymers can include, for example, the alkali metal, ammonium and substituted ammonium salts. Soluble polymers of this type are known materials. Use of polyacrylates of this type in detergent compositions has been disclosed, for example, in Diehl, U.S. Patent 3,308,067, issued march 7, 1967.
- Acrylic/maleic-based copolymers may also be used as a preferred component of the dispersing/anti-redeposition agent.
- Such materials include the water-soluble salts of copolymers of acrylic acid and maleic acid.
- the average molecular weight of such copolymers in the acid form preferably ranges from 2,000 to 100,000, more preferably from 5,000 to 75,000, most preferably from 7,000 to 65,000.
- the ratio of acrylate to maleate segments in such copolymers will generally range from 30:1 to 1:1, more preferably from 10:1 to 2:1.
- Water-soluble salts of such acrylic acid/maleic acid copolymers can include, for example, the alkali metal, ammonium and substituted ammonium salts.
- Soluble acrylate/maleate copolymers of this type are known materials which are described in European Patent Application No. 66915, published December 15, 1982, as well as in EP 193,360, published September 3, 1986, which also describes such polymers comprising hydroxypropylacrylate.
- Still other useful dispersing agents include the maleic/acrylic/vinyl alcohol terpolymers.
- Such materials are also disclosed in EP 193,360, including, for example, the 45/45/10 terpolymer of acrylic/maleic/vinyl alcohol.
- PEG polyethylene glycol
- PEG can exhibit dispersing agent performance as well as act as a clay soil removal-antiredeposition agent.
- Typical molecular weight ranges for these purposes range from 500 to 100,000, preferably from 1,000 to 50,000, more preferably from 1,500 to 10,000.
- Polyaspartate and polyglutamate dispersing agents may also be used, especially in conjunction with zeolite builders.
- Dispersing agents such as polyaspartate preferably have a molecular weight (avg.) of 10,000.
- Brightener Any optical brighteners or other brightening or whitening agents known in the art can be incorporated at levels typically from 0.05% to 1.2%, by weight, into the detergent compositions herein.
- Commercial optical brighteners which may be useful in the present invention can be classified into subgroups, which include, but are not necessarily limited to, derivatives of stilbene, pyrazoline, coumarin, carboxylic acid, methinecyanines, dibenzothiphene-5,5-dioxide, azoles, 5- and 6-membered-ring heterocycles, and other miscellaneous agents. Examples of such brighteners are disclosed in "The Production and Application of Fluorescent Brightening Agents", M. Zahradnik, Published by John Wiley & Sons, New York (1982).
- optical brighteners which are useful in the present compositions are those identified in U.S. Patent 4,790,856, issued to Wixon on December 13, 1988. These brighteners include the PHORWHITE series of brighteners from Verona. Other brighteners disclosed in this reference include Tinopal UNPA, Tinopal CBS and Tinopal 5BM; available from Ciba-Geigy, Artic White CC and Artic White CWD, available from Hilton-Davis, located in Italy; the 2-(4-stryl-phenyl)-2H-napthol[1,2-d]triazoles; 4,4'-bis- (1,2,3-triazol-2-yl)-stil- benes; 4,4'-bis(stryl)bisphenyls; and the aminocoumarins.
- these brighteners include 4-methyl-7-diethyl- amino coumarin; 1,2-bis(-venzimidazol-2-yl)ethylene; 1,3-diphenyl-phrazolines; 2,5-bis(benzoxazol-2-yl)thiophene; 2-strylnapth-[1,2-d]oxazole; and 2-(stilbene-4-yl)-2H-naphtho- [1,2-d]triazole. See also U.S. Patent 3,646,015, issued February 29, 1972 to Hamilton. Anionic brighteners are preferred herein.
- Suds Suppressors - Compounds for reducing or suppressing the formation of suds can be incorporated into the compositions of the present invention. Suds suppression can be of particular importance in the so-called "high concentration cleaning process" as described in U.S. 4,489,455 and 4,489,574 and in front-loading European-style washing machines.
- suds suppressors A wide variety of materials may be used as suds suppressors, and suds suppressors are well known to those skilled in the art. See, for example, Kirk Othmer Encyclopedia of Chemical Technology, Third Edition, Volume 7, pages 430-447 (John Wiley & Sons, Inc., 1979).
- One category of suds suppressor of particular interest encompasses monocarboxylic fatty acid and soluble salts therein. See U.S. Patent 2,954,347, issued September 27, 1960 to Wayne St. John.
- the monocarboxylic fatty acids and salts thereof used as suds suppressor typically have hydrocarbyl chains of 10 to about 24 carbon atoms, preferably 12 to 18 carbon atoms.
- Suitable salts include the alkali metal salts such as sodium, potassium, and lithium salts, and ammonium and alkanolammonium salts.
- the detergent compositions herein may also contain non-surfactant suds suppressors.
- non-surfactant suds suppressors include, for example: high molecular weight hydrocarbons such as paraffin, fatty acid esters (e.g., fatty acid triglycerides), fatty acid esters of monovalent alcohols, aliphatic C 18 -C 40 ketones (e.g., stearone), etc.
- suds inhibitors include N-alkylated amino triazines such as tri- to hexa-alkylmelamines or di- to tetra-alkyldiamine chlortriazines formed as products of cyanuric chloride with two or three moles of a primary or secondary amine containing 1 to 24 carbon atoms, propylene oxide, and monostearyl phosphates such as monostearyl alcohol phosphate ester and monostearyl di-alkali metal (e.g., K, Na, and Li) phosphates and phosphate esters.
- the hydrocarbons such as paraffin and haloparaffin can be utilized in liquid form.
- the liquid hydrocarbons will be liquid at room temperature and atmospheric pressure, and will have a pour point in the range of about -40°C and about 50°C, and a minimum boiling point not less than about 110°C (atmospheric pressure). It is also known to utilize waxy hydrocarbons, preferably having a melting point below about 100°C.
- the hydrocarbons constitute a preferred category of suds suppressor for detergent compositions. Hydrocarbon suds suppressors are described, for example, in U.S. Patent 4,265,779, issued May 5, 1981 to Gandolfo et al.
- the hydrocarbons thus, include aliphatic, alicyclic, aromatic, and heterocyclic saturated or unsaturated hydrocarbons having from about 12 to about 70 carbon atoms.
- the term "paraffin,” as used in this suds suppressor discussion, is intended to include mixtures of true paraffins and cyclic hydrocarbons.
- Non-surfactant suds suppressors comprises silicone suds suppressors.
- This category includes the use of polyorganosiloxane oils, such as polydimethylsiloxane, dispersions or emulsions of polyorganosiloxane oils or resins, and combinations of polyorganosiloxane with silica particles wherein the polyorganosiloxane is chemisorbed or fused onto the silica.
- Silicone suds suppressors are well known in the art and are, for example, disclosed in U.S. Patent 4,265,779, issued May 5, 1981 to Gandolfo et al and European Patent Application No. 89307851.9, published February 7, 1990, by Starch, M.S.
- silicone and silanated silica are described, for instance, in German Patent Application DOS 2,124,526.
- Silicone defoamers and suds controlling agents in granular detergent compositions are disclosed in U.S. Patent 3,933,672, Bartolotta et al, and in U.S. Patent 4,652,392, Baginski et al, issued March 24, 1987.
- An exemplary silicone based suds suppressor for use herein is a suds suppressing amount of a suds controlling agent consisting essentially of:
- the solvent for a continuous phase is made up of certain polyethylene glycols or polyethylene-polypropylene glycol copolymers or mixtures thereof (preferred), or polypropylene glycol.
- the primary silicone suds suppressor is branched/crosslinked and preferably not linear.
- typical liquid laundry detergent compositions with controlled suds will optionally comprise from 0.001 to 1, preferably from 0.01 to 0.7, most preferably from 0.05 to 0.5, weight % of said silicone suds suppressor, which comprises (1) a nonaqueous emulsion of a primary antifoam agent which is a mixture of (a) a polyorganosiloxane, (b) a resinous siloxane or a silicone resin-producing silicone compound, (c) a finely divided filler material, and (d) a catalyst to promote the reaction of mixture components (a), (b) and (c), to form silanolates; (2) at least one nonionic silicone surfactant; and (3) polyethylene glycol or a copolymer of polyethylene-polypropylene glycol having a solubility in water at room temperature of more than about 2 weight %, and without polypropylene glycol.
- a primary antifoam agent which is a mixture of (a) a polyorganosiloxane, (b
- the silicone suds suppressor herein preferably comprises polyethylene glycol and a copolymer of polyethylene glycol/polypropylene glycol, all having an average molecular weight of less than 1,000, preferably between 100 and 800.
- the polyethylene glycol and polyethylene/polypropylene copolymers herein have a solubility in water at room temperature of more than 2 weight %, preferably more than 5 weight %.
- the preferred solvent herein is polyethylene glycol having an average molecular weight of less than 1,000, more preferably between 100 and 800, most preferably between 200 and 400, and a copolymer of polyethylene glycol/polypropylene glycol, preferably PPG 200/PEG 300.
- Preferred is a weight ratio of between 1:1 and 1:10, most preferably between 1:3 and 1:6, of polyethylene glycol:copolymer of polyethylene-polypropylene glycol.
- the preferred silicone suds suppressors used herein do not contain polypropylene glycol, particularly of 4,000 molecular weight. They also preferably do not contain block copolymers of ethylene oxide and propylene oxide, like PLURONIC L101.
- suds suppressors useful herein comprise the secondary alcohols (e.g., 2-alkyl alkanols) and mixtures of such alcohols with silicone oils, such as the silicones disclosed in U.S. 4,798,679, 4,075,118 and EP 150,872.
- the secondary alcohols include the C 6 -C 16 alkyl alcohols having a C 1 -C 16 chain.
- a preferred alcohol is 2-butyl octanol, which is available from Condea under the trademark ISOFOL 12.
- Mixtures of secondary alcohols are available under the trademark ISALCHEM 123 from Enichem.
- Mixed suds suppressors typically comprise mixtures of alcohol + silicone at a weight ratio of 1:5 to 5:1.
- suds should not form to the extent that they overflow the washing machine.
- Suds suppressors when utilized, are preferably present in a "suds suppressing amount.
- Suds suppressing amount is meant that the formulator of the composition can select an amount of this suds controlling agent that will sufficiently control the suds to result in a low-sudsing laundry detergent for use in automatic laundry washing machines.
- compositions herein will generally comprise from 0% to 5% of suds suppressor.
- monocarboxylic fatty acids, and salts therein will be present typically in amounts up to 5%, by weight, of the detergent composition.
- from 0.5% to 3% of fatty monocarboxylate suds suppressor is utilized.
- Silicone suds suppressors are typically utilized in amounts up to 2.0%, by weight, of the detergent composition, although higher amounts may be used. This upper limit is practical in nature, due primarily to concern with keeping costs minimized and effectiveness of lower amounts for effectively controlling sudsing.
- from 0 01% to 1% of silicone suds suppressor is used, more preferably from 0.25% to 0.5%.
- these weight percentage values include any silica that may be utilized in combination with polyorganosiloxane, as well as any adjunct materials that may be utilized.
- Monostearyl phosphate suds suppressors are generally utilized in amounts ranging from 0.1% to 2%, by weight, of the composition.
- Hydrocarbon suds suppressors are typically utilized in amounts ranging from 0.01% to 5.0%, although higher levels can be used.
- the alcohol suds suppressors are typically used at 0 2%-3% by weight of the finished compositions.
- Fabric Softeners Various through-the-wash fabric softeners, especially the impalpable smectite clays of U.S. Patent 4,062,647, Storm and Nirschl, issued December 13, 1977, as well as other softener clays known in the art, can optionally be used typically at levels of from 0.5% to 10% by weight in the present compositions to provide fabric softener benefits concurrently with fabric cleaning.
- Clay softeners can be used in combination with amine and cationic softeners as disclosed, for example, in U.S. Patent 4,375,416, Crisp et al, March 1, 1983 and U.S. Patent 4,291,071, Harris et al, issued September 22, 1981.
- compositions herein A wide variety of other ingredients useful in detergent compositions can be included in the compositions herein, including other active ingredients, carriers, hydrotropes, processing aids, dyes or pigments, solvents for liquid formulations, solid fillers for bar compositions, etc.
- suds boosters such as the C 10 -C 16 alkanolamides can be incorporated into the compositions, typically at 1%-10% levels.
- the C 10 -C 14 monoethanol and diethanol amides illustrate a typical class of such suds boosters.
- Use of such suds boosters with high sudsing adjunct surfactants such as the amine oxides, betaines and sultaines noted above is also advantageous.
- soluble magnesium salts such as MgCl 2 , MgSO 4 , and the like, can be added at levels of, typically, 0.1%-2%, to provide additional suds and to enhance grease removal performance.
- detersive ingredients employed in the present compositions optionally can be further stabilized by absorbing said ingredients onto a porous hydrophobic substrate, then coating said substrate with a hydrophobic coating.
- the detersive ingredient is admixed with a surfactant before being absorbed into the porous substrate.
- the detersive ingredient is released from the substrate into the aqueous washing liquor, where it performs its intended detersive function.
- a porous hydrophobic silica (trademark SIPERNAT D10, DeGussa) is admixed with a proteolytic enzyme solution containing 3%-5% of C 13-15 ethoxylated alcohol (EO 7) nonionic surfactant.
- EO 7 ethoxylated alcohol
- the enzyme/surfactant solution is 2.5 X the weight of silica.
- the resulting powder is dispersed with stirring in silicone oil (various silicone oil viscosities in the range of 500-12,500 can be used).
- silicone oil various silicone oil viscosities in the range of 500-12,500 can be used.
- the resulting silicone oil dispersion is emulsified or otherwise added to the final detergent matrix.
- ingredients such as the aforementioned enzymes, bleaches, bleach activators, bleach catalysts, photoactivators, dyes, fluorescers, fabric conditioners and hydrolyzable surfactants can be "protected” for use in detergents, including liquid laundry detergent compositions.
- Liquid detergent compositions can contain water and other solvents as carriers.
- Low molecular weight primary or secondary alcohols exemplified by methanol, ethanol, propanol, and isopropanol are suitable.
- Monohydric alcohols are preferred for solubilizing surfactant, but polyols such as those containing from 2 to about 6 carbon atoms and from 2 to about 6 hydroxy groups (e.g., 1,3-propanediol, ethylene glycol, glycerine, and 1,2-propanediol) can also be used.
- the compositions may contain from 5% to 90%, typically 10% to 50% of such carriers.
- the detergent compositions herein will preferably be formulated such that, during use in aqueous cleaning operations, the wash water will have a pH of between 6.5 and 11, preferably between 7.5 and 10.5.
- Liquid dishwashing product formulations preferably have a pH between 6.8 and 9.0.
- Laundry products are typically at pH 9-11. Techniques for controlling pH at recommended usage levels include the use of buffers, alkalis, acids, etc., and are well known to those skilled in the art.
- compositions of the present invention may also include one or more materials effective for inhibiting the transfer of dyes from one fabric to another during the cleaning process.
- dye transfer inhibiting agents include polyvinyl pyrrolidone polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, manganese phthalocyanine, peroxidases, and mixtures thereof. If used, these agents typically comprise from 0.01% to 10% by weight of the composition, preferably from 0.01% to 5%, and more preferably from 0.05% to 2%.
- Preferred polyamine N-oxides are those wherein R is a heterocyclic group such as pyridine, pyrrole, imidazole, pyrrolidine, piperidine and derivatives thereof.
- the N-O group can be represented by the following general structures: wherein R 1 , R 2 , R 3 are aliphatic, aromatic, heterocyclic or alicyclic groups or combinations thereof; x, y and z are 0 or 1; and the nitrogen of the N-O group can be attached or form part of any of the aforementioned groups.
- the amine oxide unit of the polyamine N-oxides has a pKa ⁇ 10, preferably pKa ⁇ 7, more preferred pKa ⁇ 6.
- Any polymer backbone can be used as long as the amine oxide polymer formed is water-soluble and has dye transfer inhibiting properties.
- suitable polymeric backbones are polyvinyls, polyalkylenes, polyesters, polyethers, polyamide, polyimides, polyacrylates and mixtures thereof. These polymers include random or block copolymers where one monomer type is an amine N-oxide and the other monomer type is an N-oxide.
- the amine N-oxide polymers typically have a ratio of amine to the amine N-oxide of 10:1 to 1:1,000,000. However, the number of amine oxide groups present in the polyamine oxide polymer can be varied by appropriate copolymerization or by an appropriate degree of N-oxidation.
- the polyamine oxides can be obtained in almost any degree of polymerization. Typically, the average molecular weight is within the range of 500 to 1,000,000; more preferred 1,000 to 500,000; most preferred 5,000 to 100,000. This preferred class of materials can be referred to as "PVNO".
- poly(4-vinylpyridine-N-oxide) which as an average molecular weight of about 50,000 and an amine to amine N-oxide ratio of about 1:4.
- Copolymers of N-vinylpyrrolidone and N-vinylimidazole polymers are also preferred for use herein.
- the PVPVI has an average molecular weight range from 5,000 to 1,000,000, more preferably from 5,000 to 200,000, and most preferably from 10,000 to 20,000. (The average molecular weight range is determined by light scattering as described in Barth, et al., Chemical Analysis, Vol 113.
- the PVPVI copolymers typically have a molar ratio of N-vinylimidazole to N-vinylpyrrolidone from 1:1 to 0.2:1, more preferably from 0.8:1 to 0.3:1, most preferably from 0.6:1 to 0.4:1. These copolymers can be either linear or branched.
- compositions also may employ a polyvinyl-pyrrolidone (“PVP") having an average molecular weight of from about 5,000 to about 400,000, preferably from about 5,000 to about 200,000, and more preferably from about 5,000 to about 50,000.
- PVP's are known to persons skilled in the detergent field; see, for example, EP-A-262,897 and EP-A-256,696, incorporated herein by reference.
- Compositions containing PVP can also contain polyethylene glycol (“PEG”) having an average molecular weight from about 500 to about 100,000, preferably from about 1,000 to about 10,000.
- PEG polyethylene glycol
- the ratio of PEG to PVP on a ppm basis delivered in wash solutions is from about 2:1 to about 50:1, and more preferably from about 3:1 to about 10:1.
- the detergent compositions herein may also optionally contain from 0.005% to 5% by weight of certain types of hydrophilic optical brighteners which also provide a dye transfer inhibition action. If used, the compositions herein will preferably comprise from 0.01% to 1% by weight of such optical brighteners.
- hydrophilic optical brighteners useful in the present invention are those having the structural formula: wherein R 1 is selected from anilino, N-2-bis-hydroxyethyl and NH-2-hydroxyethyl; R 2 is selected from N-2-bis-hydroxyethyl, N-2-hydroxyethyl-N-methylamino, morphilino, chloro and amino; and M is a salt-forming cation such as sodium or potassium.
- R 1 is anilino
- R 2 is N-2-bis-hydroxyethyl and M is a cation such as sodium
- the brightener is 4,4',-bis[(4-anilino-6-(N-2-bis-hydroxyethyl)-s-triazine-2-yl)amino]-2,2'-stilbenedisulfonic acid and disodium salt.
- This particular brightener species is commercially marketed under the tradename Tinopal-UNPA-GX by Ciba-Geigy Corporation. Tinopal-UNPA-GX is the preferred hydrophilic optical brightener useful in the detergent compositions herein.
- R 1 is anilino
- R 2 is N-2-hydroxyethyl-N-2-methylamino
- M is a cation such as sodium
- the brightener is 4,4'-bis[(4-anilino-6-(N-2-hydroxyethyl-N-methylamino)-s-triazine-2-yl)amino]2,2'-stilbenedisulfonic acid disodium salt.
- This particular brightener species is commercially marketed under the tradename Tinopal 5BM-GX by Ciba-Geigy Corporation.
- R 1 is anilino
- R 2 is morphilino
- M is a cation such as sodium
- the brightener is 4,4'-bis[(4-anilino-6-morphilino-s-triazine-2-yl)amino]2,2'-stilbenedisulfonic acid, sodium salt.
- This particular brightener species is commercially marketed under the tradename Tinopal AMS-GX by Ciba Geigy Corporation.
- the specific optical brightener species selected for use in the present invention provide especially effective dye transfer inhibition performance benefits when used in combination with the selected polymeric dye transfer inhibiting agents hereinbefore described.
- the combination of such selected polymeric materials (e.g., PVNO and/or PVPVI) with such selected optical brighteners (e.g., Tinopal UNPA-GX, Tinopal 5BM-GX and/or Tinopal AMS-GX) provides significantly better dye transfer inhibition in aqueous wash solutions than does either of these two detergent composition components when used alone. Without being bound by theory, it is believed that such brighteners work this way because they have high affinity for fabrics in the wash solution and therefore deposit relatively quick on these fabrics.
- the extent to which brighteners deposit on fabrics in the wash solution can be defined by a parameter called the "exhaustion coefficient".
- the exhaustion coefficient is in general as the ratio of a) the brightener material deposited on fabric to b) the initial brightener concentration in the wash liquor. Brighteners with relatively high exhaustion coefficients are the most suitable for inhibiting dye transfer in the context of the present invention.
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Claims (5)
- Composition de blanchiment qui permet un nettoyage des ternissures comprenant des enzymes protéases, un composé de blanchiment capable d'engendrer du peroxyde d'hydrogène dans une liqueur aqueuse, et un ou plusieurs activateurs de blanchiment de l'ensemble constitué par les activateurs de blanchiment de type N-acyl-lactame de formule :dans laquelle n vaut de 0 à 8, de préférence de 0 à 2, et R6 est H ou un groupe alkyle, aryle, alcoxyaryle ou alcaryle contenant de 1 à 12 atomes de carbone ou un groupe phényle substitué contenant de 6 à 18 atomes de carbone,dans laquelle, pour ladite composition, la performance combinée de l'activateur de blanchiment/composé de blanchiment et de l'enzyme protéase, telle que mesurée par les valeurs de blancheur Hunter, est supérieure aux performances additionnées.
- Composition selon la revendication 1, dans laquelle ladite enzyme protéase est une sérine protéase bactérienne modifiée dérivant de Bacillus subtilis, Bacillus lentus ou Bacillus licheniformis.
- Composition de blanchiment selon la revendication 1, dans laquelle ledit composé de blanchiment est un percarbonate, un perborate ou un de leurs mélanges, et dans laquelle ledit activateur de blanchiment est choisi dans l'ensemble constitué par le benzoylcaprolactame, le benzoylvalérolactame, le nonanoylcaprolactame, le nonanoylvalérolactame, le 4-nitrobenzoylcaprolactame, le 4-nitrobenzoylvalérolactame, l'octanoylcaprolactame l'octanoylvalérolactame, le décanoylcaprolactame, le décanoylvalérolactame, l'undécanoylcaprolactame, l'undécanoylvalérolactame, le 3,5,5-triméthylhexanoylcaprolactame, le 3,5,5-triméthylhexanoylvalérolactame, le dinitrobenzoylcaprolactame, le dinitrobenzoylvalérolactame, le téréphtaloyldicaprolactame, le téréphtaloyldivalérolactame, et leurs mélanges.
- Composition détergente pour le linge comprenant des tensioactifs détergents, des ingrédients détergents, et une composition de blanchiment selon la revendication 1.
- Procédé pour améliorer les performances de nettoyage de ternissures de compositions de blanchiment, comprenant un composé de blanchiment capable d'engendrer du peroxyde d'hydrogène dans une liqueur aqueuse et un activateur de blanchiment de l'ensemble constitué par les activateurs de blanchiment de type N-acyl-lactame de formule :dans laquelle n vaut de 0 à 8, de préférence de O à 2, et R6 est H ou un groupe alkyle, aryle, alcoxyaryle ou alcaryle contenant de 1 à 12 atomes de carbone ou un groupe phényle substitué contenant de 6 à 18 atomes de carbone,dans lequel en outre ladite amélioration comprend l'addition à celle-ci d'une quantité efficace d'une enzyme protéase telle que la performance de la composition comprenant l'enzyme protéase, telle que mesurée par la valeur de blancheur Hunter, soit supérieure aux performances additionnées.
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Country | Link |
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EP (1) | EP0756622B1 (fr) |
JP (1) | JP2968339B2 (fr) |
CN (1) | CN1083004C (fr) |
AT (1) | ATE187765T1 (fr) |
CA (1) | CA2187305C (fr) |
DE (1) | DE69513967T2 (fr) |
ES (1) | ES2139891T3 (fr) |
WO (1) | WO1995029225A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5755992A (en) * | 1994-04-13 | 1998-05-26 | The Procter & Gamble Company | Detergents containing a surfactant and a delayed release peroxyacid bleach system |
AU4877296A (en) * | 1995-02-18 | 1996-09-11 | Albright & Wilson Uk Limited | Enzyme detergents |
ATE360677T1 (de) | 2000-10-27 | 2007-05-15 | Genencor Int | Teilchen beschichtet mit substituiertem polyvinylalkohol |
JP2022104273A (ja) * | 2020-12-28 | 2022-07-08 | 花王株式会社 | 繊維製品の洗浄方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3637339A (en) * | 1968-03-07 | 1972-01-25 | Frederick William Gray | Stain removal |
FR2094372A5 (fr) * | 1970-06-18 | 1972-02-04 | Colgate Palmolive Co | |
FR2535341B1 (fr) * | 1982-10-29 | 1986-08-14 | Ugine Kuhlmann | Composition lessivielle permettant le blanchissage a basse temperature et le nettoyage des salissures proteiques |
GB8815841D0 (en) * | 1988-07-04 | 1988-08-10 | Unilever Plc | Bleaching detergent compositions |
EP0665876B1 (fr) * | 1992-10-23 | 1999-03-31 | The Procter & Gamble Company | Detergents granulaires contenant une enzyme protease et un agent de blanchiment |
-
1995
- 1995-03-24 DE DE69513967T patent/DE69513967T2/de not_active Expired - Fee Related
- 1995-03-24 CN CN95193698A patent/CN1083004C/zh not_active Expired - Fee Related
- 1995-03-24 EP EP95914188A patent/EP0756622B1/fr not_active Expired - Lifetime
- 1995-03-24 ES ES95914188T patent/ES2139891T3/es not_active Expired - Lifetime
- 1995-03-24 JP JP7527640A patent/JP2968339B2/ja not_active Expired - Fee Related
- 1995-03-24 AT AT95914188T patent/ATE187765T1/de not_active IP Right Cessation
- 1995-03-24 CA CA002187305A patent/CA2187305C/fr not_active Expired - Fee Related
- 1995-03-24 WO PCT/US1995/003725 patent/WO1995029225A1/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CN1151179A (zh) | 1997-06-04 |
DE69513967D1 (de) | 2000-01-20 |
CN1083004C (zh) | 2002-04-17 |
DE69513967T2 (de) | 2000-07-20 |
ATE187765T1 (de) | 2000-01-15 |
CA2187305C (fr) | 2001-01-16 |
ES2139891T3 (es) | 2000-02-16 |
EP0756622A1 (fr) | 1997-02-05 |
JP2968339B2 (ja) | 1999-10-25 |
CA2187305A1 (fr) | 1995-11-02 |
WO1995029225A1 (fr) | 1995-11-02 |
JPH10500439A (ja) | 1998-01-13 |
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