WO2000015744A1 - Compositions de blanchiment - Google Patents

Compositions de blanchiment Download PDF

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Publication number
WO2000015744A1
WO2000015744A1 PCT/US1999/021588 US9921588W WO0015744A1 WO 2000015744 A1 WO2000015744 A1 WO 2000015744A1 US 9921588 W US9921588 W US 9921588W WO 0015744 A1 WO0015744 A1 WO 0015744A1
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WIPO (PCT)
Prior art keywords
bleach
surfactants
alkyl
bleaching
use according
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.)
Ceased
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PCT/US1999/021588
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English (en)
Inventor
Andrea Briatore
Giovanni Grande
Michael Alan John Moss
Oreste Todini
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Procter and Gamble Co
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Procter and Gamble Co
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Priority to CA002341188A priority Critical patent/CA2341188A1/fr
Publication of WO2000015744A1 publication Critical patent/WO2000015744A1/fr
Anticipated expiration legal-status Critical
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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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0031—Carpet, upholstery, fur or leather cleansers
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/395—Bleaching agents
    • C11D3/3956—Liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/62—Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/75—Amino oxides
    • 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

Definitions

  • the present invention relates to a fabric protective system for use in bleaching compositions, which can be used to bleach fabrics, e.g., clothes, carpets and the like.
  • Bleach-containing compositions for bleaching fabrics are well known in the art.
  • hypohalite bleach such as hypochlorite
  • peroxygen bleach such as hydrogen peroxide
  • hypochlorite-based compositions e.g., hypochlorite-based compositions
  • a liquid hypochlorite-containing composition for example, can be applied onto the fabric in neat or in diluted form.
  • the hypochlorite bleach can be present in various forms, including hypochlorous acid and in the form of various molecule fragments resulting from its decomposition pathways. Hypochlorous acid and these molecules fragments are reactive with fabrics and may cause damage and/or yellowing of fabrics being bleached.
  • bleaching compositions are often formulated comprising bleach and a fabric protective system.
  • Compositions comprising bleach and one of various fabric protective systems are well-known in the art.
  • An example is a bleaching composition based on hypohalite bleach or peroxygen bleach comprising a polymer and a borate as a fabric protective system (EP-A-0 824 147), or bleaching compositions based on hypochlorite comprising a metaborate as a fabric protective system (EP-A-0 781 480).
  • said bleaches comprising a fabric protective system.
  • said compositions may still damage and/or yellow the fabrics which are being bleached, although said compositions comprise a fabric protective system.
  • Fabrics made of cotton and/or synthetic materials have free hydroxyl groups. It is believed that fabric damage and/or fabric yellowing occurs due to the oxidation of the hydroxyl groups by the bleach. The oxidation of the hydroxyl groups is believed to be further emphasised at lower pHs. Indeed, low pH shifts the chemical equilibrium between hypochlorite and hypochlorous acid in favor of the latter. Hypochlorous acid is a more aggressive bleach, which has been found to further contribute to fabric yellowing and fabric damage. Moreover, it is further believed that the hydroxyl groups of the fabric are more easily oxidised at lower pHs.
  • fabric protection can be achieved using a combination of a borate and/or boric acid and a surfactant as a fabric protective system in bleach-containing compositions.
  • the use of a combination of a borate and/or boric acid and a surfactant in bleach-containing compositions provides further improved fabric yellowing-prevention and/or further improved fabric safety on fabrics bleached therewith, as compared to bleaching compositions comprising other fabric protective systems, e.g., a metaborate alone, or bleaching compositions comprising no fabric protective system. It is believed that the hydroxyl groups of a fabric are protected by the fabric protective system according to the present invention from oxidation by a bleach, especially a hypochlorite bleach, thus, providing fabric safety and/or fabric yellowing- prevention.
  • the bleaching composition as described herein are suitable for various laundry bleaching applications both when used in diluted conditions, e.g., as a detergent additive or a fully formulated laundry detergent composition, and when used in neat condition, e.g., as a liquid pretreater (spotter).
  • a further advantage of the bleaching compositions according to the present invention is that they are able to perform in a variety of conditions, i.e., in hard and soft water as well as when used neat or diluted.
  • compositions of the present invention are suitable for bleaching any type of fabrics including natural fabrics (e.g., fabrics made of cotton, viscose, linen, silk and wool), synthetic fabrics such as those made of polymeric fibers of synthetic origin as well as those made of both natural and synthetic fibers.
  • natural fabrics e.g., fabrics made of cotton, viscose, linen, silk and wool
  • synthetic fabrics such as those made of polymeric fibers of synthetic origin as well as those made of both natural and synthetic fibers.
  • compositions of the present invention may be used on synthetic fibers despite a standing prejudice against the use of hypohalite bleaches, especially hypochlorite bleaches, on synthetic fibers, as evidenced by warning on labels of commercially available hypochlorite bleaches and clothes.
  • Bleach-containing compositions based on hypochlorite bleach or peroxygen bleach suitable for bleaching fabrics have been described in the art.
  • EP-A-622 451 discloses compositions comprising hypochlorite, sodium hydroxide, a bleach stable perfume and a buffering system whereby the pH of the diluted composition is buffered to a constant value throughout use, comprising carbonate and/or silicate.
  • a borate and/or boric acid and a surfactant as described herein, is not disclosed.
  • EP-A-0 824 147 discloses liquid bleaching compositions comprising a hypohalite bleach and a polymer.
  • the composition may further comprise a boron salt as pH buffering component.
  • a borate and/or boric acid and a surfactant, as described herein, is not disclosed.
  • EP-A-0 781 840 discloses composition comprising hypochlorite and a metaborate as a pH buffering means. However, the use of a combination of a borate and/or boric acid and a surfactant, as described herein, is not disclosed.
  • the present invention encompasses the use of a borate and/or boric acid and a surfactant as a fabric protective system in a bleaching composition to treat fabrics, whereby good fabric yellowing-prevention performance and/or good fabric safety is achieved.
  • the surfactant is selected from the group consisting of alkyl alkoxylated sulphate surfactants, alkyl alkoxylated sulphonate surfactants, alkyl alkoxylated carboxylate surfactants, alkoxylated nonionic surfactants, fatty acid surfactants, amineoxide surfactants, betaine surfactants and quaternary ammonium surfactants, or a mixture thereof.
  • the fabric protective system as described herein is used in a bleaching composition.
  • Said fabric protective system may be added to said bleaching composition just prior to the use of said bleaching composition or at the time of manufacture of said bleaching composition.
  • the bleaching compositions may be formulated either as solids or liquids.
  • the bleaching compositions are formulated as solids, for example as granules, tablets or powders, they are preferably applied on the fabrics to be bleached according to the present invention in a liquid form, i.e., solid compositions are used in combination with an appropriate solvent, typically water.
  • the bleaching compositions are preferably but not necessarily formulated as aqueous compositions.
  • Liquid bleaching compositions are preferred herein for convenience of use.
  • Preferred liquid bleaching compositions of the present invention are aqueous and therefore, preferably comprise water in an amount of from 60% to 98%, more preferably of from 80% to 97% and most preferably 85% to 97% by weight of the total composition.
  • the fabric protective system of the present invention is used in a composition comprising a bleach.
  • a bleach Any bleach known to those skilled in the art may be suitable for use herein.
  • Preferred bleaches include any hypohalite bleach, as well as any peroxygen bleach.
  • Suitable hypohalite bleaches may be provided by a variety of sources, including bleaches that lead to the formation of positive halide ions and/or hypohalite ions, as well as bleaches that are organic based sources of halides such as chloroisocyanurates.
  • Suitable hypohalite bleaches for use herein include the alkali metal and alkaline earth metal hypochlorites, hypobromites, hypoiodites, chlorinated trisodium phosphate dodecahydrates, potassium and sodium dichloroisocyanurates, potassium and sodium trichlorocyanurates, N-chloroimides, N-chloroamides, N- chloroamines and chlorohydantoins.
  • hypohalite bleaches among those described above are the alkali metal or alkaline earth metal hypochlorites selected from the group consisting of sodium, potassium, magnesium, lithium and calcium hypochlorites, and mixtures thereof.
  • Sodium hypochlorite is the most preferred hypohalite bleach.
  • Suitable peroxygen bleaches to be used herein are hydrogen peroxide, water soluble sources thereof, or mixtures thereof.
  • a hydrogen peroxide source refers to any compound that produces perhydroxyl ions when said compound is in contact with water.
  • Suitable water-soluble sources of hydrogen peroxide for use herein include: percarbonates; persilicates; persulphates, such as monopersulfate; perborates; peroxyacids, such as diperoxydodecandioic acid (DPDA), magnesium perphtalic acid, perlauric acid, perbenzoic and alkylperbenzoic acids, hydroperoxides, aliphatic and aromatic diacyl peroxides; and mixtures thereof.
  • Preferred peroxygen bleaches herein are hydrogen peroxide, hydroperoxide and/or diacyl peroxide. Hydrogen peroxide is the most preferred peroxygen bleach herein.
  • Suitable hydroperoxides for use herein are tert-butyl hydroperoxide, cumyl hydroperoxide, 2,4,4-trimethylpentyl-2-hydroperoxide, di-isopropylbenzene- monohydroperoxide, tert-amyl hydroperoxide and 2,5-dimethyl-hexane-2,5- dihydroperoxide.
  • Suitable aliphatic diacyl peroxides for use herein are dilauroyl peroxide, didecanoyl peroxide, dimyristoyl peroxide, or mixtures thereof.
  • Suitable aromatic diacyl peroxide for use herein is for example dibenzoyl peroxide.
  • the bleaching compositions according to the present invention may typically comprise from 0.01% to 20%, preferably from 0.25% to 15%, more preferably from 0.5% to 8% and most preferably from 1% to 6% by weight of the total composition of a bleach.
  • the first essential ingredient of the fabric protective system of the present invention for use in a bleaching composition is a borate or boric acid or a mixture thereof.
  • Suitable borates include alkali metal salts of borates, and mixtures thereof.
  • Suitable alkali metal salts of borates include alkali metal salts of metaborate, tetraborate, octoborate, pentaborate, dodecaborate, borontrifluoride and alkyl borates containing from 1 to 12, preferably from 1 to 4 carbon atoms.
  • Preferred alkyl borate includes methyl borate, ethyl borate and propyl borate.
  • Particularly preferred herein are the alkali metal salts of metaborate, such as sodium metaborate, potassium metaborate, or mixtures thereof.
  • Borates like sodium metaborate and sodium tetraborate are commercially available from Borax and Societa Chimica Larderello under the name sodium metaborate and Borax®.
  • the bleaching compositions according to the present invention preferably comprise from 0.01 % to 10%, more preferably from 0.1% to 5%, even more preferably from 0.5% to 3%, and most preferably from 0.5% to 1.5% by weight of the total composition of said borate or boric acid or a mixture thereof.
  • the second essential ingredient of the fabric protective system of the present invention for use in a bleaching composition is a surfactant.
  • Preferred surfactants are selected from the group consisting of alkyl alkoxylated sulphate surfactants, alkyl alkoxylated sulphonate surfactants, alkyl alkoxylated carboxylate surfactants, alkoxylated nonionic surfactants, fatty acid surfactants, amineoxide surfactants, betaine surfactants and quaternary ammonium surfactants, or a mixture thereof.
  • Suitable alkyl alkoxylated sulphate surfactants for use herein are according to the formula RO(A) m SO3M wherein R is an unsubstituted C6-C20 alkyl or hydroxyalkyl group having a C6-C20 alkyl component, preferably a C12-C20 alkyl or hydroxyalkyl, more preferably C12- 8 alkyl or hydroxyalkyl, A is an ethoxy or propoxy or butoxy unit, m is greater than zero, typically between 0.5 and 6, more preferably between 0.5 and 3, and M is H or a cation which can be, for example, a metal cation (e.g., sodium, potassium, lithium, calcium, magnesium, etc.), ammonium or substituted-ammonium cation.
  • R is an unsubstituted C6-C20 alkyl or hydroxyalkyl group having a C6-C20 alkyl component, preferably a C12-C20 alkyl or
  • Alkyl ethoxylated sulfates as well as alkyl propoxylated sulfates are contemplated herein.
  • Specific examples of substituted ammonium cations include methyl-, dimethyl-, trimethyl-ammonium and quaternary ammonium cations, such as tetramethyl-ammonium, dimethyl piperdinium and cations derived from alkanolamines such as ethylamine, diethylamine, triethylamine, mixtures thereof, and the like.
  • Exemplary surfactants are C-12- 8 alkyl polyethoxylate (1.0) sulfate, Ci2- i8E(1 -0)M), C12-C18 alkyl polyethoxylate (2.25) sulfate, C12- C n 8E(2.25)M), C12-C18 alkyl polyethoxylate (3.0) sulfate C ⁇
  • Suitable alkyl alkoxylated sulphonate surfactants for use herein are according to the formula R(A) m SO3M wherein R is an unsubstituted C6-C20 alkyl or hydroxyalkyl group having a C6-C20 alkyl component, preferably a C12- 20 alkyl or hydroxyalkyl, more preferably C12-C18 alk y' or hydroxyalkyl, A is an ethoxy or propoxy unit, m is greater than zero, typically between 0.5 and 6, more preferably between 0.5 and 3, and M is H or a cation which can be, for example, a metal cation (e.g., sodium, potassium, lithium, calcium, magnesium, etc.), ammonium or substituted-ammonium cation.
  • R is an unsubstituted C6-C20 alkyl or hydroxyalkyl group having a C6-C20 alkyl component, preferably a C12- 20 alkyl or
  • Alkyl ethoxylated sulphonates as well as alkyl propoxylated sulphonates are contemplated herein.
  • Specific examples of substituted ammonium cations include methyl-, dimethyl-, trimethyl- ammonium and quaternary ammonium cations, such as tetramethyl-ammonium, dimethyl piperdinium and cations derived from alkanolamines such as ethylamine, diethylamine, triethylamine, mixtures thereof, and the like.
  • Exemplary surfactants are C-12- 18 alkyl polyethoxylate (1.0) sulphonate, C12- C-
  • Suitable alkyl alkoxylated carboxylate surfactants for use herein are according to the formula RO(A) m CO2M wherein R is an unsubstituted C6-C20 alkyl or hydroxyalkyl group having a C6-C20 alkyl component, preferably a C12- 20 alkyl or hydroxyalkyl, more preferably C12- 18 alkyl or hydroxyalkyl, A is an ethoxy or propoxy or butoxy unit, m is greater than zero, typically between 0.5 and 6, more preferably between 0.5 and 3, and M is H or a cation which can be, for example, a metal cation (e.g., sodium, potassium, lithium, calcium, magnesium, etc.), ammonium or substituted-ammonium cation.
  • R is an unsubstituted C6-C20 alkyl or hydroxyalkyl group having a C6-C20 alkyl component, preferably a C12- 20 alkyl or hydroxyal
  • Alkyl ethoxylated carboxylates as well as alkyl propoxylated carboxylates are contemplated herein.
  • Specific examples of substituted ammonium cations include methyl-, dimethyl-, trimethyl-ammonium and quaternary ammonium cations, such as tetramethyl-ammonium, dimethyl piperdinium and cations derived from alkanolamines such as ethylamine, diethylamine, triethylamine, mixtures thereof, and the like.
  • Exemplary surfactants are C12- -I8 alkyl polyethoxylate (1.0) carboxylate, C-
  • Suitable alkoxylated nonionic surfactants for use herein include capped and non-capped alkoxylated nonionic surfactants.
  • Suitable non-capped alkoxylated nonionic surfactants are non-capped ethoxylated nonionic surfactants according to the formula RO-(C2H4O) n H, wherein R is a CQ to C22, preferably a Cs to C22 alkyl chain or a CQ to C28 alkyl benzene chain, and wherein n is from 0 to 20, preferably from 1 to 15 and, more preferably from 2 to 15 and most preferably from 2 to 12.
  • the preferred R chains for use herein are the Cs to C22 alkyl chains.
  • Propoxylated, butoxylated, ethoxy/butoxylated, ethoxy/propoxylated, butoxy/propoxylated and ethoxy/butoxy/propoxylated nonionic surfactants may also be used herein instead of the ethoxylated nonionic surfactants as defined herein above or together with said surfactants.
  • Dobanol® surfactants are commercially available from SHELL.
  • Lutensol® surfactants are commercially available from BASF and these Tergitol® surfactants are commercially available from UNION CARBIDE.
  • Suitable capped alkoxylated non-ionic surfactants having the terminal hydroxyl group capped, are according to the formula : R(A)n-O-R1 where R and R1 are independently a CQ to C22, preferably a Cs to C22 alkyl chain or a CQ to C28 alkyl benzene chain; A is an ethoxy or propoxy or butoxy unit; and n is from 0 to 20, preferably from 1 to 15 and, more preferably from 2 to 15 and most preferably from 2 to 12.
  • Suitable chemical processes for preparing the alkoxylated nonionic surfactants for use herein include condensation of corresponding alcohols with alkylene oxide, in the desired proportions. Such processes are well-known to the person skilled in the art and have been extensively described in the art.
  • Suitable fatty acid surfactants to be used herein are according to the formula : R-CH2COOM; with R being a linear or branched C-1-C30, preferably C-
  • An exemplary fatty acid surfactant is Prifac®, which is a C-12/C14/C-16 fatty acid available from Unichema.
  • Suitable amine oxides to be used herein are according to the following formula R1R2R3NO wherein each of R-
  • Preferred amine oxide surfactants to be used according to the present invention are amine oxides having the following formula : R1R2R3NO wherein R ⁇ is an hydrocarbon chain comprising from 1 to 30 carbon atoms, preferably from 6 to 20, more preferably from 8 to 16, most preferably from 8 to 12; and wherein R2 and R3 are independently substituted or unsubstituted, linear or branched hydrocarbon chains comprising from 1 to 4 carbon atoms, preferably from 1 to 3 carbon atoms, and more preferably are methyl groups.
  • may be a saturated substituted or unsubstituted linear or branched hydrocarbon chain.
  • Suitable amine oxides for use herein are for instance natural blend Cs- C-
  • betaine surfactants for use herein i.e., betaine and/or sulfobetaine
  • betaine and/or sulfobetaine A generic formula for betaine surfactants for use herein (i.e., betaine and/or sulfobetaine) is :
  • is a hydrophobic group
  • R2 is hydrogen, C-1-C6 alkyl, hydroxy alkyl or other substituted C-j-C ⁇ alkyl group
  • R3 is C-i-C ⁇ alkyl, hydroxy alkyl or other substituted C ⁇ -CQ alkyl group which can also be joined to R2 to form ring structures with the N, or a C-
  • R4 is a moiety joining the cationic nitrogen atom to the hydrophilic group and is typically an alkylene, hydroxy alkylene, or polyalkoxy group containing from 1 to 10 carbon atoms
  • X is the hydrophilic group which is a carboxylate or sulfonate group, preferably sulfonate group.
  • are aliphatic or aromatic, saturated or unsaturated, substituted or unsubstituted hydrocarbon chains that can contain linking groups such as amido groups, ester groups. More preferred R-
  • the hydrophobic group R1 can also be an amido radical of the formula : R a -C(O)-NRb-(C(R c )2)m> wherein R a is an aliphatic or aromatic, saturated or unsaturated, substituted or unsubstituted hydrocarbon chain containing from 8 up to 20 carbon atoms, preferably an alkyl group containing from 8 up to 20 carbon atoms, preferably up to 18, more preferably up to 16; R D is either a hydrogen a short chain alkyl or substituted alkyl containing from 1 to 4 carbon atoms, preferably a group selected from the group consisting of methyl, ethyl, propyl, hydroxy substituted ethyl or propyl and mixtures thereof, more preferably methyl or hydrogen; R c is selected from the group consisting of hydrogen and hydroxy groups, and m is from 1 to 4, preferably from 2 to 3, more preferably 3, with no more than one hydroxy group in any (C(R C )2)
  • Preferred R2 is hydrogen, or an alkyl or substituted alkyl containing from 1 to 4 carbon atoms, preferably a group selected from the group consisting of methyl, ethyl, propyl, hydroxy substituted ethyl or propyl and mixtures thereof, more preferably methyl.
  • Preferred R3 is a C1-C4 carboxylic acid group, a C1-C4 sulfonate group, or an alkyl or substituted alkyl containing from 1 to 4 carbon atoms, preferably a group selected from the group consisting of methyl, ethyl, propyl, hydroxy substituted ethyl or propyl and mixtures thereof, more preferably methyl.
  • Preferred R4 is (CH2) n wherein n is an integer from 1 to 10, preferably from 1 to 6, more preferably is from 1 to 3.
  • betaine/sulphobetaine Some common examples of betaine/sulphobetaine are described in U.S. Pat. Nos. 2,082,275, 2,702,279 and 2,255,082, incorporated herein by reference.
  • alkyldimethyl betaines examples include coconut-dimethyl betaine, lauryl dimethyl betaine, decyl dimethyl betaine, 2-(N-decyl-N, N- dimethyl-ammonia)acetate, 2-(N-coco N, N-dimethylammonio) acetate, myristyl dimethyl betaine, palmityl dimethyl betaine, cetyl dimethyl betaine, stearyl dimethyl betaine.
  • coconut dimethyl betaine is commercially available from Seppic under the trade name of Amonyl 265®.
  • Lauryl betaine is commercially available from Albright & Wilson under the trade name Empigen BB/L®.
  • betaine is Lauryl-immino-dipropionate commercially available from Rhone-Pouienc under the trade name Mirataine H2C-HA ®.
  • sulfobetaine surfactants include tallow bis(hydroxyethyl) sulphobetaine, cocoamido propyl hydroxy sulfobetaines which are commercially available from Rhone Poulenc and Witco, under the trade name of Mirataine CBS® and Rewoteric AM CAS 15® respectively.
  • amidobetaines/amidosulfobetaine include cocoamidoethylbetaine, cocoamidopropyl betaine or C-10-C14 fatty acylamidopropylene(hydropropylene)sulfobetaine.
  • C10-C14 fatty acylamidopropylene(hydropropylene)sulfobetaine is commercially available from Sherex Company under the trade name "Varion CAS® sulfobetaine".
  • Suitable quaternary ammonium surfactants for use herein are according to the formula : R « j R2R3R4N + X", wherein X is a counteranion such as halogen, methyl sulphate, methyl sulphonate, or hydroxide; R-
  • is a saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl groups containing from 1 to 4 carbon atoms, preferably from 1 to 3 and more preferably methyl.
  • C 10- C 18 hydrocarbon chain most preferably C-12. 14 , or C ⁇ Q; and R2, R3 and R4 are all three methyl, and X is halogen, preferably bromide or chloride, most preferably bromide.
  • quaternary ammonium surfactants are myristyl trimethylammonium methyl sulphate, cetyl trimethylammonium methyl sulphate, lauryl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide (STAB), cetyl trimethyl ammonium bromide (CTAB) and myristyl trimethyl ammonium bromide (MTAB). Highly preferred herein are lauryl trimethyl ammonium salts.
  • Such trimethyl quaternary ammonium surfactants may be commercially available from Hoechst, or from Albright & Wilson under the trade name Empigen CM®.
  • the bleaching compositions according to the present invention preferably comprise from 0.01% to 50%, more preferably from 0.03% to 40%, even more preferably from 0.07% to 20%, and most preferably from 0.1% to 10% by weight of the total composition of said surfactant.
  • Cotton fabrics contain cellulose (i.e., (CQH ⁇ QO ⁇ ) ⁇ ).
  • a bleach-containing composition e.g., a hypochlorite-containing composition
  • the bleach may react with the hydroxyl substituents of cellulose in position 6, 2, 3 and 5 of the cellulosic ring and thus may introduce new functional groups like carbonylic, aldehydic and/or carboxylic groups.
  • Synthetic fabrics may be made of various synthetic materials like polyamide-elasthane that also comprise hydroxyl groups capable of being oxidized by bleach.
  • the fabric protective system consisting of a borate and/or boric acid and a surfactant as described herein, for use in a bleaching composition is capable of protecting, i.e., esterifying and/or complexing, the hydroxyl groups present on the fibers of a treated fabric. Otherwise, said hydroxyl groups would be subject to oxidation by the bleach, e.g., hypochlorite bleach, which leads to fabric yellowing and/or fabric damages.
  • the fabric yellowing-prevention and/or fabric safety performance benefit can be achieved when using the fabric protective system of the present invention in a liquid bleaching composition which is applied in a neat form, e.g., as a pretreater, as well as in a solid or liquid bleaching composition which is applied in a diluted form, e.g., typical dilution with water in conventional washing conditions.
  • the yellowing-prevention effect and/or safety effect of the present invention can be evaluated by comparing the composition according to the present invention to a bleach-containing composition comprising a fabric protective system other than that claimed by the present invention.
  • the degree of yellowing can be determined by both visual and instrumental grading. Visually, the difference in yellowing between items treated with different compositions can be determined by a team of expert panelists. Instrumentally, the assessment can be determined with the help of Colorimeters such as Ganz Griesser® instruments (e.g., Datacolor® Spectraflash® SF 500, Machbet White- eye® 500) or a ZEISS ELREPHO® or others which are available for instance from Hunterlab® or Gardner®.
  • Ganz Griesser® instruments e.g., Datacolor® Spectraflash® SF 500, Machbet White- eye® 500
  • ZEISS ELREPHO® ZEISS ELREPHO® or others which are available for instance from Hunterlab® or Gardner®.
  • Fabric safety may be evaluated by different test methods including the degree of polymerisation test method according to UNI (Ente Nazionale Italiano di Unificazione) official method UNI 8282-Determinazione della viscosita intrinseca in soluée di cuprietilendiammina (CED).
  • UNI Ente Nazionale Italiano di Unificacade
  • CED cuprietilendiammina
  • the fabric protective system as described herein may be used in liquid bleaching compositions, having a pH of from 0 to 14.
  • the borate may also act as a pH buffering means.
  • the bleaching composition herein is a composition comprising an alkali metal hypochlorite as the bleach
  • the boron salt provides a prolonged through-the-bleach buffering action, i.e., maintains the pH of the bleaching solution at a pH at least 8, preferably at least 8.5, more preferably at least 9.5 for a longer period of time, throughout the treatment, e.g., at a dilution level of 200:1 (wate ⁇ composition), as compared to the buffering action obtained with the same composition without said boron salt.
  • the buffering action of the boron salt also affects the hypochlorite/ hypochlorous acid such that the shift of hypochlorite into hypochlorous acid is reduced. It is believed that by controlling this equilibrium, fabric damage and/or fabric yellowing can be reduced.
  • the bleaching compositions herein are liquid and comprise a hypohalite bleach, typically an alkali metal hypochlorite
  • the recommended pH range of the bleaching composition is from 8 to 14, preferably from 8.5 to 14, more preferably from 9 to 13.5, and even more preferably from 9.5 to 13.5. It is in this alkaline pH range that the optimum stability and performance of the hypohalite bleach, e.g., hypochlorite, is obtained.
  • compositions of the present invention may comprise an alkalinity source to adjust the pH of said composition.
  • the bleaching compositions herein may comprise up to 10%, preferably of from 0.04% to 5% and more preferably of from 0.1% to 2% by weight of the total composition of said alkalinity source.
  • Suitable alkalinity sources for use herein are the caustic alkalis, such as sodium hydroxide, potassium hydroxide and/or lithium hydroxide, and/or the alkali metal oxides such, as sodium and/or potassium oxide or mixtures thereof.
  • a preferred alkalinity source is a caustic alkali, more preferably sodium hydroxide and/or potassium hydroxide.
  • alkalinity sources include ammonia, ammonium carbonate and hydrogen carbonate.
  • the bleaching compositions herein are liquid and comprise a peroxygen bleach
  • the recommended pH range of the bleaching composition to achieve good stability is from 1 to 9, preferably between pH 1 and 8, more preferably between pH 1 and 7 and most preferably between pH 1 and 6.
  • the bleaching compositions herein may further comprise an acid to adjust the pH of said composition.
  • the bleaching compositions of the present invention may comprise up to 10%, preferably of from 0.04% to 5% and more preferably of from 0.1 % to 2% by weight of the total composition of said acid.
  • Suitable acids for use herein may be organic acids, inorganic acids, or mixtures thereof.
  • Preferred organic acids are citric, maleic, oxalic succinic, tartaric acids or mixtures thereof.
  • a preferred inorganic acid is sulphuric acid.
  • the bleaching compositions according to the present invention may further comprise as an optional, but preferred ingredient, a pH buffering component in addition to the pH buffering action that the borate may have.
  • a pH buffering component in addition to the pH buffering action that the borate may have.
  • the preferred alkali metal salts to be used herein are sodium and potassium salts.
  • Particularly preferred are alkali metal salts of carbonate.
  • the preferred alkali metal salt of carbonate is sodium carbonate.
  • the bleaching compositions of the present invention may comprise up to 5%, preferably from 0.01% to 4% and more preferably from 0.02% to 3% by weight of the total composition of a pH buffering component.
  • the bleaching compositions according to the present invention may further comprise other optional ingredients, such as bleach-stable surfactants, pigments, enzymes, dyes, optical b ghteners, solvents, polymers, stabilizing agents, chelating agents, radical scavengers, bleach activators, hydrotropes and the like.
  • bleach-stable surfactants such as bleach-stable surfactants, pigments, enzymes, dyes, optical b ghteners, solvents, polymers, stabilizing agents, chelating agents, radical scavengers, bleach activators, hydrotropes and the like.
  • the bleaching compositions herein comprise a peroxygen bleach
  • said compositions may comprise a bleach activator up to a level of 10% by weight of the total composition.
  • Suitable bleach activators to be used herein include those belonging to the class of esters, amides, imides, or anhydrides. Examples of suitable compounds of this type are disclosed in British Patent GB 1 586 769 and GB 2 143 231 and a method for their formation into a prilled form is described in European Published Patent Application EP-A-62 523.
  • Suitable examples of such compounds to be used herein are tetracetyl ethylene diamine (TAED), sodium 3,5,5 trimethyl hexanoyloxybenzene sulphonate, diperoxy dodecanoic acid as described for instance in US 4 818 425 and nonylamide of peroxyadipic acid as described for instance in US 4 259 201 and n-nonanoyloxybenzenesulphonate (NOBS).
  • TAED tetracetyl ethylene diamine
  • NOBS n-nonanoyloxybenzenesulphonate
  • N-acyl caprolactams selected from the group consisting of substituted or unsubstituted benzoyl caprolactam, octanoyl caprolactam, nonanoyl caprolactam, hexanoyl caprolactam, decanoyl caprolactam, undecenoyl caprolactam, formyl caprolactam, acetyl caprolactam, propanoyl caprolactam, butanoyl caprolactam pentanoyl caprolactam or mixtures thereof.
  • a particular family of bleach activators of interest was disclosed in EP 624 154, and particularly preferred in that family is acetyl triethyl citrate (ATC).
  • Acetyl triethyl citrate has the advantage that it is environmental friendly as it eventually degrades into citric acid and alcohol. Furthermore, acetyl triethyl citrate has a good hydrolytical stability in the product upon storage and it is an efficient bleach activator.
  • the bleaching compositions of the present invention may further comprise a stabilizing agent, preferably a radical scavenger, a chelating agent or a mixture thereof.
  • a stabilizing agent preferably a radical scavenger, a chelating agent or a mixture thereof.
  • the stabilizing agents have to be stable to the hypohalite bleach.
  • said stabilizing agents are highly preferred.
  • Highly preferred stabilizing agents are radical scavengers alone, or in combination with a chelating agent.
  • Suitable radical scavengers for use herein include aromatic radical scavengers comprising an unsaturated ring system of from 3 to 20, preferably of from 3 to 18 and more preferably of from 5 to 14 carbon atoms and having a double bond set comprising a total of 4n+2 electrons, wherein n is an integer of from 0 to 4, preferably of from 1 to 3.
  • aromatic radical scavengers include benzene derivatives, naphthalene derivatives, annulene derivatives, cyclopentadiene derivatives, cyclopropene derivatives and the like, especially aryl carboxylates and/or aryl sulfonates.
  • radical scavengers aryl carboxylates, aryl sulphonate and derivatives thereof
  • aryl carboxylates, aryl sulphonate and derivatives thereof have one of the following formulas:
  • each X, Y, and Z are -H, -COO-M+, -Cl, -Br, -SO3-M+, -NO2, -OCH3, or a C-
  • these components include pyromellitic acid, i.e. where X, Y and Z are -COO-H + ; hemimellitic acid, trimellitic acid, i.e. where X and Y are -COO-H "1" and Z is H.
  • radical scavengers are phthalic acid; sulfophthalic acid; other mono-substituted phthalic acids; di-substituted benzoic acids; alkyl-, chloro-, bromo-, sulfo-, nitro- and alkoxy- benzoic acids, i.e. where Y and Z are -H and X is a C-
  • radical scavengers useful in the present invention are benzoic acid, toluic acid, 4-toluene sulfonic acid, 3-nitro benzoic acid, 2 n-octyl benzoic acid, 2 n- octyl sulfonic acid, anisic acid or mixtures thereof. Most preferred herein are n- anisic acid, benzoic acid, methoxy benzoic acid and/or 3-nitrobenzoic acid.
  • the radical scavengers described above are the acidic form of these species, i.e., M is H. It is intended that the present invention also covers the salt derivatives of these species, i.e., M is an alkali metal, preferably sodium or potassium. In fact, where the pH of the bleaching compositions of the present invention is in the alkaline range, the radical scavengers of the present invention exist primarily as the ionized salt in the aqueous composition herein.
  • the anhydrous derivatives of certain species described herein above can also be used in the present invention, e.g., pyromellitic dianhyd de, phthalic anhydride, sulphthalic anhydride and the like.
  • Suitable chelating agents for use herein may be any of those known to those skilled in the art such as the ones selected from the group comprising phosphonate chelating agents, phosphate chelating agents, polyfunctionally- substituted aromatic chelating agents, ethylenediamine N,N'- disuccinic acids, or mixtures thereof.
  • Suitable phosphonate chelating agents to be used herein may include alkali metal ethane 1 -hydroxy diphosphonates (HEDP), alkylene poly (alkylene phosphonate), as well as amino phosphonate compounds, including amino aminotri(methylene phosphonic acid) (ATMP), nitrilo trimethylene phosphonates (NTP), ethylene diamine tetra methylene phosphonates, and diethylene thamine penta methylene phosphonates (DTPMP).
  • the phosphonate compounds may be present either in their acid form or as salts of different cations on some or all of their acid functionalities.
  • Preferred phosphonate chelating agents to be used herein are diethylene triamine penta methylene phosphonate (DTPMP) and ethane 1 -hydroxy diphosphonate (HEDP).
  • DTPMP diethylene triamine penta methylene phosphonate
  • HEDP ethane 1 -hydroxy diphosphonate
  • Such phosphonate chelating agents are commercially available from Monsanto under the trade name DEQUEST®-
  • Suitable phosphate chelating agents are as follows: Phosphonic acid can be condensed in the reaction
  • cyclic polyphosphates also referred to as metaphosphates
  • the phosphate compound contains both cycles and branched chain, and can be referred to as an ultraphosphate.
  • M is a counterion, preferably an alkali metal
  • phosphate ingredients are suitable for use herein, and preferred are linear phosphate ingredients (i.e., R is M) where n is 1 (pyrophosphate) and n is 2 (tripolyphosphate (STPP)), most preferably where n is 2.
  • R linear phosphate ingredients
  • n is 1 (pyrophosphate) and n is 2 (tripolyphosphate (STPP)
  • STPP tripolyphosphate
  • M is Sodium
  • Phytic acid which is a chelating agent particularly suitable for use herein, is a hexa-phosphoric acid that occurs naturally in the seeds of many cereal grains, generally in the form of the insoluble calcium-magnesium salt. It may also be derived from corn steep liquor. Commercial grade phytic acid is commercially available from J.T.Baker Co., e.g., as a 40% aqueous solution. It is intended that the present invention covers the acidic form of phytic acid as well as alkali metal salt derivatives thereof, particularly sodium or potassium salts thereof. Sodium phytate is available from Jonas Chemical Co (Brooklyn, N.Y.).
  • the phytic acid component exists primarily as the ionized salt in the liquid compositions herein even if it is added in its acidic form. Mixtures of such salts of phytic acid are also covered.
  • Polyfunctionally-substituted aromatic chelating agents may also be 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.
  • a preferred biodegradable chelating agent for use herein is ethylene diamine N,N'- disuccinic acid, or alkali metal, or alkaline earth, ammonium or substitutes ammonium salts thereof or mixtures thereof.
  • Ethylenediamine N,N'- disuccinic acids, especially the (S,S) isomer have been extensively described in US patent 4, 704, 233, November 3, 1987, to Hartman and Perkins.
  • Ethylenediamine N,N'- disuccinic acids is, for instance, commercially available under the tradename ssEDDS® from Palmer Research Laboratories.
  • Particularly preferred chelating agents for use herein are phosphate chelating agents like sodium tripolyphosphate, sodium pyrophosphate, phytic acid, and mixtures thereof.
  • the bleaching compositions according to the present invention may comprise from 0.01% to 10%, preferably from 0.01% to 8% by weight, more preferably from 0.1 % to 5%, and most preferably from 0.2% to 3% by weight of the total composition of a stabilising agent.
  • the bleaching compositions of the present invention may further comprise another surfactant in addition to the surfactants which are part of the fabric protective system.
  • Said surfactant may be present in the bleaching compositions according to the present invention in amounts up to 30%, preferably of from
  • Surfactants for use herein include other anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, and mixtures thereof. Naturally, for the purpose of the invention, the additional surfactants have to be stable to the used bleach.
  • An optional component of the bleaching compositions herein is a polymer.
  • the polymer has to be stable in the presence of the used bleach.
  • Suitable polymers for use are polymers comprising monomeric units selected from the group consisting of unsaturated carboxylic acids, polycarboxylic acids, sulphonic acids, phosphonic acids and mixtures thereof. Co-polymerisation of the above monomeric units among them or with other co-monomers such as styrenesulfonic acid is also suitable.
  • Preferred examples of such polymers are the polymers and co-polymers of monomeric units selected from the group consisting of acrylic acid, maleic acid, vinylsulphonic acid and mixtures thereof. Also suitable for use herein are the above mentioned polymers and co-polymers which are modified in order to contain other functional groups such as aminophosphonic and/or phosphonic units. More preferred polymers are selected from the group consisting of polyacrylate polymers, co-polymers of acrylic and maleic acid, co-polymers of styrene sulphonic acid and maleic acid, and mixtures thereof, preferably modified with aminophosphonic and/or phosphonic groups.
  • the molecular weight for these polymers and co-polymers is preferably below 100,000, most preferably between 500 and 50,000.
  • the most suitable polymers and co-polymers for use herein will be soluble in an amount up to 0.1% by weight, in an aqueous composition comprising 5% by weight of sodium hypochlorite with its pH adjusted to 13 with sodium hydroxide.
  • polymers suitable for use herein, are the polyacrylate polymers sold under the tradename Good-Rite® from BF Goodrich, Acrysol® from Rohm & Haas, Sokalan® from BASF, Norasol® from Norso Haas. Also suitable for use herein are the co-polymers of styrene sulphonic acid and maleic acid, commercially available under the tradename Versaflex® from National Starch such as Versaflex 157, as well as Acumer® terpolymers from Rohm and Haas, in particular Acumer® 3100.
  • Preferred commercially available polymers are the polyacrylate polymers, especially the Norasol® polyacrylate polymers and more preferred are the polyacrylate polymer Norasol® 41 ON (MW 10,000) and the polyacrylate polymer modified with phosphonic groups Norasol® 440N (MW 4000) and its corresponding acid form Norasol® QR 784 (MW 4000).
  • a preferred polymer for use herein is a polyacrylate polymer modified with phosphonic groups commercially available under the tradename Norasol® 440N (MW 4000) and its corresponding acid form Norasol® QR 784 (MW 4000) from Norso-Haas.
  • Mixtures of the polymers described herein may also be used in the present invention.
  • Polymers herein are preferably present in low amounts, i.e., in amounts of up to 10% by weight, preferably up to 1%, more preferably from 0.001% to 0.5% by weight, most preferably from 0.005% to 0.2% by weight of the liquid composition.
  • the bleaching compositions according to the present invention may also comprise a brightener or a mixture thereof as an optional ingredient.
  • the brightener has to be stable in the presence of the bleach used.
  • the brighteners may be desired herein to further enhance the whiteness performance of the bleaching compositions herein.
  • Brighteners are compounds which have the ability to fluoresce by absorbing ultraviolet wave-lengths of light and re-emitting visible light. Brighteners, also referred to as fluorescent whitening agent (FWA), have been extensively described in the art, see for instance EP-A-0 265 041 , EP-A-0 322 564, EP-A-0 317 979 or "Fluorescent whitening agents" by A.K. Sarkar, published by MERROW, especially page 71-72.
  • FWA fluorescent whitening agent
  • 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, dibenzothiophene-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). Further optical brighteners which may also be used in the present invention include naphthlimide, benzoxazole, benzofuran, benzimidazole and any mixtures thereof.
  • optical brighteners which are useful in the present bleaching compositions are those identified in U.S. Patent 4,790,856. 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; Artie White CC® and Artie White CWD®; the 2-(4-styryl-phenyl)-2H-naptho[1 ,2-d]triazoles; 4,4'-bis(1 ,2,3-triazol-2-yl)- stilbenes; 4,4'-bis(styryl)bisphenyls; and the aminocoumarins.
  • brighteners useful herein include 4-methyl-7-diethyl- amino coumarin; 1,2-bis(-benzimidazol-2-yl)ethylene; 1 ,3-diphenyl-pyrazolines; 2,5- bis(benzoxazol-2-yl)thiophene; 2-styryl-naptho-[1 ,2-d]oxazole; 2-(stilbene-4-yl)- 2H-naphtho[1 ,2-d]triazole, 3-phenyl-7-(isoindolinyl) coumarin; 3-methyl-7- (isoindolinyl) coumarin; 3-chloro-7-(isoindolinyl) coumarin; 4-(isoindolinyl)-4'- methylstilbene; 4-(isoindolinyl)-4'-methoxystilbene; sodium 4-(isoindolinyl)-4'- stilbenesulfonate; 4-(isoindolinyl)-4'--
  • optical brighteners useful in the present invention are those having the structural formula:
  • R- j is selected from anilino, N-2-bis-hydroxyethyl and NH-2- hydroxyethyl
  • R2 is selected from N-2-bis-hydroxyethyl, N-2-hydroxyethyl-N- methylamino, morphilino, chloro and amino
  • M is a salt-forming cation such as sodium or potassium.
  • R1 is anilino
  • R2 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.
  • is anilino
  • R2 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.
  • is anilino
  • R2 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.
  • substituted stilbene 2,2'-disulfonic acid derivatives also include 4-4'-bis (2- 2' styryl sulfonate) biphenyl, commercially available from Ciba-Geigy under the trade name Brightener 49® or other hydrophilic brighteners like for example Brightener 3® or Brightener 47®, also commercially available from Ciba-Geigy.
  • brighteners useful in the present invention include the polycyclic oxazole derivatives such as benzo-oxazole derivatives, or mixtures thereof and particularly preferred herein the benzo-oxazole derivatives.
  • An example of such a brightener is benzoxazole,2,2'-(thiophenaldyl)bis having the following formula C18H10N2O2S, commercially available from Ciba-Geigy under the trade name Tinopal SOP®. This brightener is almost insoluble in water, i.e. it has a solubility being lower than 1 gram per liter.
  • Another example of such a brightener is bis(sulfobenzofuranyl)biphenyl, commercially available from Ciba-Geigy under the trade name Tinopal PLC®.
  • the bleaching compositions according to the present invention may comprise up to 1.0% by weight of the total composition of a brightener or a mixture thereof, preferably from 0.005% to 0.5%, more preferably from 0.005% to 0.3% and most preferably from 0.008% to 0.1%.
  • the bleaching composition of the present invention is used by applying the composition to the fabric to be treated.
  • the compositions according to the present invention are preferably used in liquid form.
  • liquid form it is meant that liquid compositions can be used per se in neat or in diluted form, and solid compositions, for example granules, tablets or powders, are dissolved in an appropriate solvent, typically water, before use, i.e., before being contacted to said fabrics.
  • an appropriate solvent typically water
  • compositions for the bleaching of fabrics according to the present invention may be diluted with a solvent by the user, the preferred solvent is water. Such dilution may occur for instance in hand laundry applications as well as by other means such as in a washing machine.
  • Said compositions can be used at a dilution level of up to 500:1 (soiven composition), preferably from 5:1 to 200:1 and more preferably from 10:1 to 80:1 (solventcomposition).
  • Fabrics to be treated herein include, but are not limited to, clothes, curtains, drapes, bed linens, bath linens, table cloths, sleeping bags, tents, upholstered furniture and the like, and/or carpets.
  • treating a fabric it is meant herein bleaching and/or disinfecting said fabric as the compositions of the present invention comprise a bleach.
  • a bleaching composition according to the present invention is contacted with the fabrics to be treated.
  • pretreatment mode where a liquid bleaching composition, as defined herein, is applied neat onto said fabrics before the fabrics are rinsed, or washed then rinsed, or in a "soaking mode” where a bleaching composition, as defined herein, is first diluted in an aqueous bath and the fabrics are immersed and soaked in the bath, before they are rinsed, or in a "through the wash mode", where a bleaching composition, as defined herein, is added on top of a wash liquor formed by dissolution or dispersion of a typical laundry detergent. It is also essential in both cases, that the fabrics be rinsed after they have been contacted with said composition, before said composition has completely dried off.
  • compositions according to the present invention are preferably used on fabrics in a liquid form. More specifically, the process of bleaching fabrics according to the present invention comprises the steps of first contacting said fabrics with a bleaching composition according to the present invention, in its diluted form, then allowing said fabrics to remain in contact with said composition, for a period of time sufficient to bleach said fabrics, typically 1 to 60 minutes, preferably 5 to 30 minutes, then rinsing said fabrics with water. If said fabrics are to be washed, i.e., with a conventional composition comprising at least one surface active agent, said washing may be conducted by contacting said fabrics at the same time with a bleaching composition according to the present invention and said detergent composition, or said washing may be conducted before or after said fabrics have been bleached.
  • said process allows the bleaching of fabrics and optionally the washing of fabrics with a detergent composition comprising at least one surface active agent before the step of contacting said fabrics with said bleaching composition and/or in the step where said fabrics are contacted with said bleaching composition and/or after the step where said fabrics are contacted with the bleaching composition and before the rinsing step and/or after the rinsing step.
  • the process of bleaching fabrics comprises the step of contacting fabrics with a liquid bleaching composition according to the present invention, in its neat form, of allowing said fabrics to remain in contact with said bleaching composition for a period of time sufficient to bleach said fabrics, typically 5 seconds to 30 minutes, preferably 1 minute to 10 minutes and then rinsing said fabrics with water. If said fabrics are to be washed, i.e., with a conventional composition comprising at least one surface active agent, said washing may be conducted before or after that said fabrics have been bleached.
  • the level of hypohalite bleach is from 0.01% to 5%, preferably from 0.1% to 3.5%, more preferably from 0.2% to 2% and most preferably from 0.2% to 1%.
  • the present invention provides liquid hypohalite bleach-containing compositions that may be applied neat onto a fabric to bleach, despite a standing prejudice against using hypochlorite- containing compositions neat on fabrics.
  • the bleaching pre-treatment operation may also be followed by the diluted bleaching process as described above either in bucket (hand operation) or in a washing machine.
  • Plurafac LF231® 1.0 - 2.0 1.0 - 5.0 - C12/14E7C - 1.0 -- - 0.5 -- 0.5 Minors and water balance up to 100%
  • C12E3S is an alkyl C12 (ethoxy)3 sulphate commercially available from Albright
  • C10E2S is an alkyl C-
  • o (ethoxy)2 sulphate commercially available from Albright
  • Plurafac LF231® is a capped alkoxylated non-ionic surfactant commercially available from BASF.
  • C12/14E7C is an alkyl ethoxy carboxylate commercially available from Clariant.
  • All the above bleaching compositions provide excellent fabric safety and/or excellent fabric yellowing-prevention to fabrics when used to treat fabrics.

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Abstract

L'invention concerne l'utilisation d'un borate et/ou d'un acide borique et d'un agent de surface comme agent protecteur de tissus dans une composition de blanchiment destinée à traiter les tissus. Cette composition permet de prévenir de manière satisfaisante le jaunissement des tissus et/ou d'accroître la protection des tissus.
PCT/US1999/021588 1998-09-16 1999-09-16 Compositions de blanchiment Ceased WO2000015744A1 (fr)

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FR3045662B1 (fr) 2015-12-21 2020-10-02 Eurotab Composition solide chloree blanchissante protegeant la fibre

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083795A (en) * 1975-01-24 1978-04-11 Rhone-Poulenc Industries Solid, non-corrosive detergent compositions
SU1189877A1 (ru) * 1984-01-06 1985-11-07 Закавказский Комплексный Отдел Московского Филиала Всесоюзного Научно-Исследовательского И Проектного Института Химической Промышленности Дезинфицирующее отбеливающее средство "дезбел
US4568477A (en) * 1983-12-06 1986-02-04 Lever Brothers Company Detergent bleach compositions
US4686063A (en) * 1986-09-12 1987-08-11 The Procter & Gamble Company Fatty peroxyacids or salts thereof having amide moieties in the fatty chain and low levels of exotherm control agents
EP0396341A2 (fr) * 1989-05-01 1990-11-07 The Procter & Gamble Company Granulé de blanchiment aggloméré à base de peroxyacide et procédé de préparation
EP0431747A2 (fr) * 1989-11-30 1991-06-12 The Clorox Company Détergent oxydant aqueux stable
WO1991012309A2 (fr) * 1990-02-08 1991-08-22 Unilever N.V. Composition de blanchissage liquide
WO1996033258A1 (fr) * 1995-04-20 1996-10-24 Albright & Wilson Uk Limited Suspensions aqueuses stabilisees d'agent de blanchiment contenant des particules de perborate
EP0825250A1 (fr) * 1996-08-21 1998-02-25 The Procter & Gamble Company Compositions de blanchiment
EP0937772A1 (fr) * 1998-02-23 1999-08-25 The Procter & Gamble Company Compositions de blanchiment

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083795A (en) * 1975-01-24 1978-04-11 Rhone-Poulenc Industries Solid, non-corrosive detergent compositions
US4568477A (en) * 1983-12-06 1986-02-04 Lever Brothers Company Detergent bleach compositions
SU1189877A1 (ru) * 1984-01-06 1985-11-07 Закавказский Комплексный Отдел Московского Филиала Всесоюзного Научно-Исследовательского И Проектного Института Химической Промышленности Дезинфицирующее отбеливающее средство "дезбел
US4686063A (en) * 1986-09-12 1987-08-11 The Procter & Gamble Company Fatty peroxyacids or salts thereof having amide moieties in the fatty chain and low levels of exotherm control agents
EP0396341A2 (fr) * 1989-05-01 1990-11-07 The Procter & Gamble Company Granulé de blanchiment aggloméré à base de peroxyacide et procédé de préparation
EP0431747A2 (fr) * 1989-11-30 1991-06-12 The Clorox Company Détergent oxydant aqueux stable
WO1991012309A2 (fr) * 1990-02-08 1991-08-22 Unilever N.V. Composition de blanchissage liquide
WO1996033258A1 (fr) * 1995-04-20 1996-10-24 Albright & Wilson Uk Limited Suspensions aqueuses stabilisees d'agent de blanchiment contenant des particules de perborate
EP0825250A1 (fr) * 1996-08-21 1998-02-25 The Procter & Gamble Company Compositions de blanchiment
EP0937772A1 (fr) * 1998-02-23 1999-08-25 The Procter & Gamble Company Compositions de blanchiment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8621, Derwent World Patents Index; Class D25, AN 86-136703, XP002092499 *

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