WO1997023681A1 - Compositions de blanchiment a base d'hypochlorite - Google Patents

Compositions de blanchiment a base d'hypochlorite Download PDF

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Publication number
WO1997023681A1
WO1997023681A1 PCT/US1996/020182 US9620182W WO9723681A1 WO 1997023681 A1 WO1997023681 A1 WO 1997023681A1 US 9620182 W US9620182 W US 9620182W WO 9723681 A1 WO9723681 A1 WO 9723681A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
fabrics
buffering means
bleaching
hypochlorite
Prior art date
Application number
PCT/US1996/020182
Other languages
English (en)
Inventor
Stefano Scialla
Giuseppe Trigiante
Original Assignee
The Procter & Gamble Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to US09/091,809 priority Critical patent/US6120555A/en
Priority to BR9612257A priority patent/BR9612257A/pt
Priority to JP9523786A priority patent/JP3059222B2/ja
Priority to PL96327502A priority patent/PL327502A1/xx
Publication of WO1997023681A1 publication Critical patent/WO1997023681A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—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
    • C11D3/395—Bleaching agents
    • C11D3/3956—Liquid compositions

Definitions

  • the present invention relates to a liquid bleaching composition which is suitable for laundry applications including hand washing as well as washing with automatic washing machines.
  • Liquid bleaching compositions are well-known in the art. Amongst the different bleaching compositions available, those relying on bleaching by hypochlorite are often preferred, mainly for performance reasons, especially at lower temperature.
  • hypochlorite bleaches there are some limitations to the convenience of hypochlorite bleaches.
  • a hypochlorite- containing composition suitable for use in laundry application, whereby fabric safety is improved.
  • a pH buffering means with low sensitivity to water hardness, i.e. a pH buffering means which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ion, in order to cause precipitation at 25°C of the calcium salt of the alkali anion of said pH buffering means.
  • composition allows to provide improved fabric whiteness and/or improved fabric safety on the fabrics treated therewith, as compared to the same composition without said pH buffering means with low sensitivity to water hardness according to the present invention.
  • the liquid hypochlorite bleach- containing compositions comprise said pH buffering means with low sensitivity to water hardness together with a precipitation agent like carbonate salt and/or silicate salt, outstanding whiteness and/or fabric safety performance are provided.
  • compositions of the present invention allow to provide outstanding fabric whitening action and/or fabric safety properties without compromising on the stain removal performance on different types of stains including bleachable stains (e.g. coffee), enzymatic stains (e.g. blood) and greasy stains (e.g. lipstick).
  • bleachable stains e.g. coffee
  • enzymatic stains e.g. blood
  • greasy stains e.g. lipstick
  • compositions of the present invention are suitable for the bleaching of different types 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.
  • the compositions of the present invention may be used on synthetic fibers despite a standing prejudice against using hypochlorite bleaches on synthetic fibers, as evidenced by warnings on labels of commercially available hypochlorite bleaches and clothes.
  • the liquid compositions according to the present invention comprising a pH buffering means with low sensitivity to water hardness allow a prolonged through-the-bleach buffering action, i.e. to maintain the pH of the bleaching solution as high as possible during the whole bleaching cycle from the moment the dilution is completed, without increasing the pH of the compositions per se as compared to the same compositions but without said pH buffering means.
  • compositions comprising hypochlorite and pH buffering means have been described in the art.
  • WO 88/05462 discloses a composition for removing stains from fabrics comprising an aqueous solution of trisodium phosphate, sodium hydroxide, sodium hypochlorite and a buffer to maintain a pH of between about 10 and 12 such a sodium carbonate, sodium bicarbonate, sodium sesquicarbonate or mixtures thereof.
  • WO 88/ 05462 further discloses that it is preferred that the buffer system employed holds the pH as close to pH 10 as possible, consistent with effective stain removal to provide a product which is more gentle to skin and fabrics than a higher pH.
  • WO 88/0562 also discloses a process of removing stains from fabrics with said compositions.
  • pH buffering means having a low sensitivity to water hardness as described herein are nowhere disclosed in WO 88/05462.
  • EP-A-622 451 discloses compositions suitable for use in diluted form, comprising hypochlorite, sodium hydroxide, a bleach stable perfume and as a buffering system whereby the pH of the diluted composition is buffered to a constant value throughout use, carbonate and/or silicate.
  • EP-A-622 451 also discloses a method of bleaching wherein such a composition is contacted with fabrics. No pH buffering means with low sensitivity to water hardness are disclosed.
  • EP-A-653 482 and EP-A-668 345 disclose hypochlorite-containing compositions comprising a source of strong alkalinity, a pH buffering means and optionally other types of ingredients such as respectively radical scavengers and polycarboxylate acids of pyridine.
  • the pH buffering means disclosed therein are alkali metal silicate and/or carbonate, sodium borate and sodium sesquicarbonate. pH buffering means having a low sensitivity to water hardness as described herein are nowhere disclosed in said patent applications.
  • UK 1282 906 discloses stabilised aqueous alkali metal hypochlorite solutions comprising as a stabiliser an alkali metal heptonate or boroheptonate.
  • Alkali metal boroheptonate as used in UK 1282 906 refers to a mixture of an alkali metal heptonate with either boric acid or an alkali metal metaborate and generally containing two gram moles of alkali metal heptonate per gram atom of boron in the boric acid or metaborate.
  • no strong source of alkalinity nor the pH of the solutions therein are disclosed. Also no laundry application is disclosed.
  • BE-749728 discloses an aqueous system comprising an N-h ⁇ drogenate and a hypohaiite such as hypobromite, hypochlorite or hypoiodite in equilibrium with the corresponding N-halogenated compound, and a buffering system to maintain the pH of said system in a range of 4 to 1 1 to stabilise it before use.
  • the buffering system mentioned therein are generically acetates, carbonates, phosphates, polyphosphates, organophosphates, borates, pol ⁇ borates, organoborates, silicates, polysilicates, organosilicates or mixtures thereof. Strong sources of alkalinity such as sodium/potassium hydroxide are also disclosed.
  • US-4 000 082 discloses defoaming compositions based on lithium salts.
  • US-4 000 082 discloses aqueous cleaning compositions comprising anionic surfactants, nonionic surfactants, from 5% to 50% by weight of the total composition of a highly alkaline compound selected from the group of sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium metaborate and the like, and from 1 % to 5% by weight of a lithium salt including lithium hypochlorite.
  • a highly alkaline compound selected from the group of sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium metaborate and the like, and from 1 % to 5% by weight of a lithium salt including lithium hypochlorite.
  • No bleaching application is disclosed, let alone laundry bleaching application.
  • a pH buffering means according to the present invention which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means, in an alkaline liquid bleaching composition comprising hypochlorite, for bleaching fabrics, i.e. improved fabric whiteness and/or fabric safety on the fabrics treated therewith, have not been acknowledged in the prior art.
  • the present invention encompasses a liquid bleaching composition having a pH of from 8 to 14, said composition comprising an alkali metal hypochlorite, or mixtures thereof, and a pH buffering means which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means, with the proviso that said alkali metal hypochlorite is not lithium hypochlorite when said pH buffering means is sodium metaborate.
  • a method of bleaching fabrics to improve fabric whiteness and/or fabric safety which comprises the step of contacting said fabrics with a liquid bleaching composition having a pH of from 8 to 14, said composition comprising an alkali metal hypochlorite, or mixtures thereof, and a pH buffering means which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25°C of the calcium salt of the alkali anion of said pH buffering means.
  • compositions of the present invention are liquid bleaching compositions.
  • the compositions of the present invention comprise hypochlorite.
  • Various forms of alkali metal hypochlorite are commercially available and, although this is not critical for the present invention, it is preferred herein to use sodium hypochlorite.
  • Compositions according to the present invention comprise a bleaching amount of an alkali metal hypochlorite, or mixtures thereof, which typically represent from 0.1 % to 20% by weight of the total composition, based on active chlorine, of said alkali metal hypochlorite.
  • Preferred compositions herein comprise from 0.5% to 8%, based on active chlorine, of an alkali metal hypochlorite, or mixtures thereof.
  • the compositions according to the present invention comprise a pH buffering means with a low sensitivity to water hardness or mixtures thereof, i.e. a pH buffering means which, when used in a 1 M solution of the buffer at pH 10, requires more than 2.5 millimoles (mM) of calcium ions, preferably more than 3.5 mM, and more preferably more than 5 mM of said calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means.
  • mM millimoles
  • suitable pH buffering means to be used herein are selected by evaluating the amount of Ca ions required, when used in a 1 M solution at pH 10, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said buffering means.
  • This amount of Ca ions requested can be measured with the test method reported hereinafter in the experimental data.
  • Suitable pH buffering means with a low sensitivity to water hardness preferably have their buffering pH, i.e. pKa of their conjugated acids, between 8.5 and 13, and more preferably between 9 and 11.
  • Examples of said pH buffering means with a low sensitivity to water hardness include alkali metal salts of metaborate and stannate and mixtures thereof. Particularly preferred herein are the alkali metal salts of metaborate such as sodium metaborate and potassium metaborate, or mixtures thereof.
  • compositions according to the present invention comprise from 0.01% to 20% by weight of the total composition of said pH buffering means which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means, preferably from 0.1 % to 15%, and more preferably from 0.5% to 8%.
  • pH buffering means allows to reduce the conversion of hypochlorite into hypochlorous acid, one of the species which are most responsible for the fabric damage and/or fabric whiteness, thereby providing improved fabric safety and/or fabric whiteness.
  • improved fabric whiteness it is meant herein that the whiteness on fabric achieved by using the hypochlorite compositions of the present invention is improved compared to the whiteness obtained by using the same hypochlorite compositions without said pH buffering means or by using the same compositions but with another ingredient acting as a pH buffering means such as carbonate salts and/or silicate salts instead of said pH buffering means according to the present invention.
  • a pH buffering means such as carbonate salts and/or silicate salts instead of said pH buffering means according to the present invention.
  • Fabric safety may be evaluated by different test methods including the copper number test.
  • the copper number on a fabric is proportional to the amount of aldehydic groups derived from the oxydation of cellulose and therefore is proportional to the fabric damage.
  • the copper number test can consist in measuring the number of grams of copper which are reduced from cupric to the cuprous state by 100 g of cellulose.
  • Fe+++ ions is added so as to form ferrous sulphate in an amount exactly equivalent to the cuprous oxide present.
  • Fe2(SO4)3 + Cu2O + H2SO4 2FeSO4 + H2SO4 + 2CuSO4
  • ferrous sulphate is measured by titration with 0.1 N potassium permanganate that oxide Fe++ (ferrous) ions to Fe+++ (ferric) ions.
  • Fabric safety may also be evaluated by the tensile strength loss test. This method consists in measuring the tensile strength of a given fabric by pulling said fabrics until they break. The force, expressed in Kg, necessary to break said fabrics is the "ultimate tensile stress" and may be measured with "the stress-strain Instron tensilometer". The lower the force needed to break said fabrics, the less fabric damage is caused on the fabrics.
  • compositions according to the present invention have a pH as is of from 8 to 14, preferably of from 9 to 13.5, and more preferably of from 9.5 to 13.5. It is in this alkaline range that the optimum stability and performance of the hypochlorite is obtained.
  • compositions of the present invention comprise a strong source of alkalinity.
  • Preferred compositions herein comprise up to 10% by weight of the total composition of said strong source of alkalinity, or mixtures thereof, preferably of from 0.04% to 5% and more preferably of from 0.1 % to 2%.
  • strong sources of alkalinity are alkali metal hydroxides, such as potassium and/or sodium hydroxide, or alkali metal oxides such as sodium and/or potassium oxide.
  • compositions of the present invention are aqueous.
  • they comprise water preferably in an amount of from 60% to 98% by weight of the total aqueous liquid bleaching composition, more preferably of from 80% to 97% and most preferably of from 85% to 97%.
  • composition according to the present invention may further comprise as an optional but preferred ingredient a precipitation agent.
  • a precipitation agent Particularly useful to be used herein are alkali metal salts of carbonates, polycarbonates, sesquicarbonates, silicates, polysilicates or mixtures thereof.
  • the preferred alkali metal salts to be used herein are sodium and potassium.
  • Particularly preferred precipitation agents are alkali metal salts of silicate and/or carbonate.
  • the preferred alkali metal salts of silicate and carbonates are sodium silicate and sodium carbonate, both of which are commercially available, or mixtures thereof.
  • compositions of the present invention comprise up to 5% by weight of the total composition of a precipitation agent, preferably from 0.01% to 4% and more preferably from 0.02% to 3%
  • said precipitation agents such as sodium carbonate and/or sodium silicate, when added in an alkaline liquid composition comprising hypochlorite and a pH buffering means which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means, have a further action on top of the one of said pH buffering means allowing thereby to further improve the fabric whiteness and/or the fabric safety of fabrics treated with said composition.
  • said precipitation agent allows to reduce or even eliminate the impurities both in said compositions as is and especially in the bleaching environment.
  • Said impurities include calcium, magnesium as well as heavy metal ions such as Cu, Fe, Ni, Co and the like, which have been found to adversely affect both fabric whiteness and fabric safety.
  • metal ions catalyse the attack of hypochlorite on fabrics with the generation of yellow oxidised species. It is further speculated that said metal ions are adsorbed per se on oxidised fabrics as coloured species and catalyse the degradation of the brighteners adsorbed on fabrics. Also said metal ions stabilise colored pigments of enzymatic stains such as blood and grass. Also metal ions catalyse the depolymerisation of cotton fibres which leads to reduced tensile strength of the fabrics, thereby reducing fabrics resistance.
  • the precipitation agents according to the present invention may also act as pH buffering means, completing thereby the pH buffering action of the pH buffering means according to the present invention.
  • compositions according to the present invention may further comprise other optional ingredients such as bleach-stable surfactants, organic or inorganic alkalis, pigments, dyes, optical brighteners, solvents, chelating agents, radical scavengers and the like.
  • optional ingredients such as bleach-stable surfactants, organic or inorganic alkalis, pigments, dyes, optical brighteners, solvents, chelating agents, radical scavengers and the like.
  • compositions according to the present invention are preferably used in diluted form in laundry application.
  • the expression "use in diluted form” herein includes dilution by the user, which occurs for instance in hand laundry applications, as well as dilution by other means, such as in a washing machine.
  • Preferred dilution levels are of from 0.1% to 20% for hand laundry application and 0.1% to 10% in a washing machine.
  • the present invention further encompasses a method of bleaching fabrics which comprises the step of contacting said fabrics with a liquid bleaching composition having a pH of from 8 to 14, said composition comprising an alkali metal hypochlorite, or mixtures thereof, and a pH buffering means which, when used in a 1 M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means.
  • the compositions used in said method of bleaching fabrics may further comprise a precipitation agent as defined herein before. Said method according to the present invention improves the fabric whiteness and/or the fabric safety.
  • the method of bleaching fabrics according to the present invention comprises the steps of first contacting said fabrics with a liquid bleaching composition having a pH of from 8 to 14, said composition comprising an alkali metal hypochlorite, or mixtures thereof and a pH buffering means which, when used in a 1 M solution, at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25°C of the calcium salt of the alkali anion of said pH buffering means, 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 in water to remove said composition. If said fabrics are to be washed, i.e.
  • said washing may be conducted together with the bleaching of said fabrics 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 that said fabrics have been bleached.
  • said method according to the present invention allows to bleach fabrics and optionally to wash 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 rinsing step when said bleaching composition has been removed from said fabrics.
  • the alkaline liquid compositions according to the present invention comprising an alkali metal hypochlorite, a pH buffering means which, when used in a 1M solution at pH 10, requires more than 2.5 mM of calcium ions, in order to cause precipitation at 25 °C of the calcium salt of the alkali anion of said pH buffering means, a strong source of alkalinity to obtain the desired pH, and optionally a precipitation agent may be manufactured by a process comprising the steps of: mixing said alkali metal hypochlorite, said strong source of alkalinity and water, adding said pH buffering means and optionally said precipitation agent, and thereafter separating the precipitates formed from said composition.
  • separating the precipitates formed it is meant herein that any means known to remove a solid phase from a liquid phase may be used. Accordingly the precipitates formed may be removed from the compositions of the present invention by settling and/or filtration and/or centrifugation.
  • Buffer means real M ml Ca added
  • compositions which further illustrate the present invention were made by mixing the listed ingredients in the listed proportions:
  • compositions (weight %) 1
  • compositions above provided improved fabric safety and/or improved whiteness to fabrics when used to treat fabrics without compromising on stains removal performance on a wide variety of stains like bleachable stains, enzymatic stains and greasy stains.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Steroid Compounds (AREA)
  • Epoxy Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Cette invention concerne des compositions de blanchiment aqueuses et liquides, lesquelles possèdent un système de tamponnage du pH d'une faible sensibilité à la dureté de l'eau, ainsi qu'un hypochlorite de métal alcalin. Cette invention concerne également un procédé de traitement de tissus à l'aide de ces compositions.
PCT/US1996/020182 1995-12-22 1996-12-13 Compositions de blanchiment a base d'hypochlorite WO1997023681A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US09/091,809 US6120555A (en) 1996-12-13 1996-12-13 Hypochlorite bleaching compositions
BR9612257A BR9612257A (pt) 1995-12-22 1996-12-13 Composições alvejantes de hipoclorito
JP9523786A JP3059222B2 (ja) 1995-12-22 1996-12-13 次亜塩素酸塩漂白組成物
PL96327502A PL327502A1 (en) 1995-12-22 1996-12-13 Hypochlorite bleaching compositions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP95203617A EP0781840B1 (fr) 1995-12-22 1995-12-22 Compositions de blanchiment à base de hypochlorite
EP95203617.6 1995-12-22

Publications (1)

Publication Number Publication Date
WO1997023681A1 true WO1997023681A1 (fr) 1997-07-03

Family

ID=8221001

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/020182 WO1997023681A1 (fr) 1995-12-22 1996-12-13 Compositions de blanchiment a base d'hypochlorite

Country Status (10)

Country Link
EP (1) EP0781840B1 (fr)
JP (1) JP3059222B2 (fr)
AT (1) ATE223960T1 (fr)
BR (1) BR9612257A (fr)
DE (1) DE69528185D1 (fr)
ES (1) ES2182865T3 (fr)
MX (1) MX9805102A (fr)
PL (1) PL327502A1 (fr)
TR (1) TR199801172T2 (fr)
WO (1) WO1997023681A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6297209B1 (en) 1996-05-10 2001-10-02 The Clorox Company Sequesterants as hypochlorite bleach enhancers
WO2012129161A2 (fr) * 2011-03-18 2012-09-27 Puricore, Inc. Solutions stabilisées d'acide hypohalogéneux

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1514068A (en) * 1923-06-28 1924-11-04 Kohnstamm & Co Inc H Bleaching or stain-removing composition and method
US2097517A (en) * 1932-11-23 1937-11-02 Monsanto Chemicals Soluble hypochlorite composition
US2435474A (en) * 1943-03-19 1948-02-03 Mathieson Alkali Works Inc Method of inhibiting the precipitation of lithium soap in an aqueous solution of lithum hypochlorite
US2829110A (en) * 1952-08-30 1958-04-01 Olin Mathieson Bleaching agent
US3640879A (en) * 1969-01-15 1972-02-08 Lrc Research And Dev Co Cleaning composition and method of using same
USRE29473E (en) * 1969-01-15 1977-11-15 Dhp Corporation Chemical composition
US4332691A (en) * 1980-04-11 1982-06-01 Lever Brothers Company Bleaching liquid cleaning composition

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Publication number Priority date Publication date Assignee Title
GB1286978A (en) 1969-09-12 1972-08-31 Jeyes Group Ltd Disinfectant compositions
GB1304037A (fr) 1970-04-23 1973-01-24
US4000082A (en) 1975-10-02 1976-12-28 Basf Wyandotte Corporation Defoaming compositions based on lithium salts
WO1988005462A1 (fr) 1987-01-23 1988-07-28 Molony Donald P Composition a base de phosphate de trisodium/hydroxyde de sodium/hypochlorite de sodium/solution tampon et procede d'elimination de taches
CA2026332C (fr) * 1989-10-04 1995-02-21 Rodney Mahlon Wise Produit de nettoyage liquide, stable, epaissi renfermant un agent de blanchiment
US5372611A (en) * 1992-09-30 1994-12-13 Apollo Chemical Corporation Liquid alkali for reactive dyeing of textiles
DE69322375T2 (de) 1993-04-26 1999-06-24 The Procter & Gamble Co., Cincinnati, Ohio Parfümierte Hypochloritbleichmittel
EP0653482B1 (fr) 1993-11-11 2000-03-15 The Procter & Gamble Company Composition de blanchiment à base d'hypochlorite
EP0668345B1 (fr) 1994-02-22 2001-12-12 The Procter & Gamble Company Compositions de blanchiment d'hypochlorite

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1514068A (en) * 1923-06-28 1924-11-04 Kohnstamm & Co Inc H Bleaching or stain-removing composition and method
US2097517A (en) * 1932-11-23 1937-11-02 Monsanto Chemicals Soluble hypochlorite composition
US2435474A (en) * 1943-03-19 1948-02-03 Mathieson Alkali Works Inc Method of inhibiting the precipitation of lithium soap in an aqueous solution of lithum hypochlorite
US2829110A (en) * 1952-08-30 1958-04-01 Olin Mathieson Bleaching agent
US3640879A (en) * 1969-01-15 1972-02-08 Lrc Research And Dev Co Cleaning composition and method of using same
USRE29473E (en) * 1969-01-15 1977-11-15 Dhp Corporation Chemical composition
US4332691A (en) * 1980-04-11 1982-06-01 Lever Brothers Company Bleaching liquid cleaning composition

Also Published As

Publication number Publication date
MX9805102A (es) 1998-10-31
ATE223960T1 (de) 2002-09-15
ES2182865T3 (es) 2003-03-16
TR199801172T2 (xx) 1998-10-21
PL327502A1 (en) 1998-12-21
JPH11501361A (ja) 1999-02-02
BR9612257A (pt) 1999-07-13
EP0781840B1 (fr) 2002-09-11
JP3059222B2 (ja) 2000-07-04
DE69528185D1 (de) 2002-10-17
EP0781840A1 (fr) 1997-07-02

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