WO1996000188A1 - Compositions de blanchiment a base d'hypochlorite - Google Patents

Compositions de blanchiment a base d'hypochlorite Download PDF

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Publication number
WO1996000188A1
WO1996000188A1 PCT/US1995/007663 US9507663W WO9600188A1 WO 1996000188 A1 WO1996000188 A1 WO 1996000188A1 US 9507663 W US9507663 W US 9507663W WO 9600188 A1 WO9600188 A1 WO 9600188A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
fabrics
periodate
bleaching
compositions
Prior art date
Application number
PCT/US1995/007663
Other languages
English (en)
Inventor
Andrea Agostini
Marco Petri
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 MX9700077A priority Critical patent/MX9700077A/es
Priority to JP8503240A priority patent/JPH10502121A/ja
Publication of WO1996000188A1 publication Critical patent/WO1996000188A1/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
    • C11D3/395—Bleaching agents
    • C11D3/3951—Bleaching agents combined with specific additives
    • 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. Representative of the art is, for example, WO-88-05461 which discloses an aqueous composition comprising hypochlorite, sodium carbonate and sodium hydroxide and the use of said composition for removing stains from the fabrics.
  • hypochlorite-containing composition suitable for use in laundry, whereby fabric safety is improved. It is a further object of the present invention to provide a hypochlorite- containing composition, suitable for use in laundry, whereby the fabric whiteness is improved.
  • hypochlorite bleach compositions comprising a periodate, or mixtures thereof.
  • the compositions of the present invention provide outstanding fabric safety as well as fabric whiteness on the fabrics treated therewith. Indeed, it has been found that for any given composition comprising an alkali metal hypochlorite, adding periodate will improve both the fabric safety and the fabric whiteness on the fabrics treated therewith.
  • the hypochlorite bleach compositions herein further comprise a buffering/precipitation system, e.g. carbonate salts and/or silicate salts.
  • compositions of the present invention are that on top of their fabric safety properties and whitening action said compositions allow also good stain removal.
  • US 4 065 545 relates to the stabilization of aqueous hypochlorite solutions.
  • This patent discloses solutions of hypochlorite comprising up to 0.1 % by weight of periodate ions.
  • said solutions may also contain silicate ions and/or caustic soda and/or sodium carbonate.
  • EP-A- 478086 discloses microemulsion detergent compositions comprising hypochlorite and having a pH of at least 12. Said compositions further comprise amongst other components, sodium carbonate, alkali metal hydroxide and from 0.01 % to 0.3% by weight of an alkali metal periodate, such as potassium periodate or sodium periodate. Periodate is included in the microemulsion compositions for its stabilizing effect on hypochlorite.
  • This patent application further discloses that the compositions therein are all- purpose cleaning compositions particularly adapted to the cleaning of hard- surfaces. Laundry application is also mentioned. Actually, the benefits derivable from the use of a periodate in an aqueous bleaching composition comprising hypochlorite for bleaching fabrics, i.e. improved fabric safety and/or fabric whiteness on the fabrics treated therewith, have not been acknowledged in the prior art.
  • the present invention encompasses an aqueous liquid bleaching composition comprising an alkali metal hypochlorite and more than 0.1 % by weight of the total composition of a periodate, said compositions not being in the form of a microemulsion.
  • compositions according to the present invention further comprise a buffering/precipitation system, preferably carbonate salts and/or silicate salts.
  • the present invention further encompasses a method of bleaching and/or washing fabrics to improve fabric safety and/or fabric whiteness which comprises the step of contacting said fabrics with an aqueous liquid hypochlorite bleach composition having a pH as is of from 9 to 14 and comprising a periodate.
  • an aqueous liquid hypochlorite bleach composition having a pH as is of from 9 to 14 and comprising a periodate.
  • the compositions used in said method further comprise a buffering/precipitation system, preferably carbonate salts and/or silicate salts.
  • compositions of the present invention comprise hypochlorite.
  • 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 alkali metal hypochlorite, which typically represents from 2% to 10% by weight of the total composition, based on active chlorine, of alkali metal hypochlorite.
  • Preferred compositions herein comprise from 3% to 6%, based on active chlorine, of alkali metal hypochlorite.
  • the compositions according to the present invention comprise a periodate, or mixtures thereof.
  • the periodates may be added as such or may be made in situ by any suitable reactions of appropriate iodine compounds.
  • suitable periodates for use in the present compositions include alkali metal periodates such as sodium and potassium periodates. Preferred herein is to use sodium periodate.
  • the compositions of the present invention comprise more than 0.1 % by weight of the total composition of said periodate, or mixtures thereof, preferably of from 0.11 % to 2% and more preferably of from 0.11 % to 1.5%.
  • periodate ions coming from the dissociation of periodates have an action which allows to improve the fabric safety and the fabric whiteness of fabrics contacted with an aqueous liquid hypochlorite- containing composition comprising said periodates.
  • said periodate ions allow to reduce or even eliminate the metal impurities both in said compositions as is and especially in the washing environment.
  • Said metal impurities include heavy metal ions such as Cu, Fe, Ni, Co and the like, and have been found to adversely affect both fabric safety and fabric whiteness.
  • the above mentioned action of periodate ions is sustained by the presence of a buffering/precipitation system as herein after defined.
  • said buffering/precipitation system allows to remove from the washing solution magnesium and calcium which would otherwise bind to periodate ions, and thus partially inactivate them. Additionally, said buffering/precipitation system prevents the pH drop in the washing solution to values at which periodate ions become no longer stable and decompose.
  • metal ions catalyze the attack of hypochlorous acid on fabrics with the generation of yellow oxidized species.
  • said metal ions are adsorbed per se on oxidized fabrics as colored species and catalyze the degradation of the brighteners adsorbed on fabrics.
  • said metal ions stabilize colored pigments of enzymatic stains such as blood and grass.
  • said metal ions catalyze the depolymehsation of cotton fibers which leads to reduced tensile strength of the fabrics, thereby reducing fabrics resistance.
  • the compositions according to the present invention have a pH as is of from 9 to 14, preferably of from 9.5 to 13 and more preferably of from 9.5 to 12.
  • Suitable means to achieve such pH value include strong sources of alkalinity.
  • the compositions herein comprise less than 2% by weight of the total composition of a strong source of alkalinity, or mixtures thereof, preferably of from 0.04% to 1.5% and more preferably of from 0.5% to 0.9%.
  • 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, or mixtures thereof.
  • compositions of the present invention may further comprise a buffering/precipitation system.
  • a buffering/precipitation system Particularly suitable to be used herein are silicate or carbonate salts, or mixtures thereof.
  • Preferred alkali metal salts of silicate and carbonate are sodium silicate and sodium carbonate, both of which are commercially available, or mixtures thereof.
  • Other precipitation/buffering systems could be conveniently used herein such as sodium borate and sodium sesquicarbonate.
  • any buffering/precipitation system having the property of keeping the pH above the value 8 when following a dilution of 0.3 to 1.7 % is suitable to be used in the present invention.
  • compositions herein comprise up to 5% by weight of the total composition of a carbonate salt, or mixtures thereof, preferably from 0.1% to 4% and more preferably from 0.1% to 3% and up to 5% by weight of the total composition of a silicate salt, or mixtures thereof, preferably from 0.1 % to 4% and more preferably from 0.2% to 3%.
  • said buffering/precipitation system allows buffering of the pH of the present compositions.
  • the pH of a composition according to the present invention remains constant throughout use, i.e. the pH of a diluted composition is buffered from the moment the dilution is completed and until said hypochlorite bleaching composition is started to be rinsed away from the fabrics to which it has previously been contacted.
  • the improvement in fabric safety is optimized by the presence of said buffering/precipitation system, which by its buffering action, reduces the conversion of hypochlorite into hypochlorous acid, a species which we have found to be responsible for the fabric damage.
  • the buffering of the hypochlorite compositions of the present invention reduces harshness to hands. Also said buffering/precipitation system removes from the wash solution calcium and magnesium.
  • compositions of the present invention are aqueous liquid bleaching compositions. Accordingly, the compositions of the present invention comprise from 70% to 97% by weight of the total composition of water, preferably from 75% to 96% and more preferably from 78% to 94%.
  • compositions according to the present invention may further comprise optional ingredients such as bleach-stable surfactants, organic or inorganic alkalis, pigments, dyes, optical brighteners, solvents, chelating agents, radical scavengers, perfumes, bleach-stable perfume stabilizers and the like.
  • optional ingredients such as bleach-stable surfactants, organic or inorganic alkalis, pigments, dyes, optical brighteners, solvents, chelating agents, radical scavengers, perfumes, bleach-stable perfume stabilizers and the like.
  • compositions of the present invention provide improved fabric safety as well as improved fabric whiteness.
  • improved fabric safety it is meant herein that the damage caused on fabric by using the hypochlorite compositions of the present invention is reduced compared to the damage caused by using the same hypochlorite compositions but without any periodate.
  • 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 but without any periodate.
  • compositions according to the present invention are 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. Typical dilution levels are of from 0.4% 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 an aqueous bleaching composition having a pH as is of from 9 to 14 which comprises an alkali metal hypochlorite, or mixtures thereof and a periodate, or mixtures thereof.
  • compositions used in said method of bleaching fabrics may further comprise a buffering/precipitation system, preferably carbonate salts and/or silicate salts. Said method according to the present invention improves the fabric safety and/or fabric whiteness.
  • the method of bleaching fabrics according to the present invention comprises the steps of first contacting said fabrics with an aqueous bleaching composition having a pH as is of from 9 to 14 which comprises an alkali metal hypochlorite, or mixtures thereof and a periodate, or mixtures thereof, then allowing said fabrics to remain in contact with said bleaching composition, for a period of time sufficient to bleach said fabrics, typically 3 to 60 minutes, preferably 5 to 30 minutes, then rinsing said fabrics in water to remove said bleaching composition. If said fabrics are to be washed, i.e. with a conventional composition comprising at least one surface active agent, it is preferred to perform the method herein before said fabrics are washed.
  • said method according to the present invention further comprises a subsequent step where said fabrics are washed with a detergent composition comprising at least one surface active agent.
  • compositions (weight %)
  • Composition 1 is a hypochlorite-containing composition taken as a reference and commercially available.
  • Composition 2 is representative of the present invention, i.e. composition 2 comprises sodium hypochlorite, a buffering/precipitation system (sodium carbonate) and sodium periodate.
  • a multicycle test has been carried out.
  • a washing was performed in a glass beaker at 70°C for 45 minutes with a washing solution comprising 12.5 g/l of a composition herein before mentioned. Then the ribbons were added into the washing solution. At the end of each washing cycle the ribbons were rinsed. After 3 washing cycles the damage on the fabrics was evaluated by puling said ribbons until they broke. The force necessary to break the ribbons was measured with an Instron tensilometer. The lower the force needed to break said ribbons, the more serious is the damage caused on the fabrics.
  • composition 1 aqueous compositions of the present invention comprising sodium hypochlorite, sodium carbonate and sodium periodate, as compared to a composition of the prior art (composition 1 ).
  • composition 2 a reduced fabric damage is achieved with the composition of the present invention as compared to the composition of the prior art (composition 1 ).
  • composition is made by mixing the listed ingredients in the listed proportions:
  • Composition 1 allows to obtain outstanding fabric safety as well as outstanding fabric whiteness, when used to bleach fabrics. This composition is suitable to be used in hand washing applications as well as in washing with automatic washing machines.

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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)
  • Detergent Compositions (AREA)

Abstract

Cette invention se rapporte à des compositions de blanchiment aqueuses liquides, qui comprennent de l'hypochlorite et plus de 0,1 % en poids de periodate ou de mélanges de périodate. Ces compositions ont un pH en l'état compris entre 9 et 14 et elles peuvent en outre contenir un système de précipitation/tamponnage. Un procédé servant au blanchiment de textiles à l'aide de ces compositions est également décrit.
PCT/US1995/007663 1994-06-24 1995-06-20 Compositions de blanchiment a base d'hypochlorite WO1996000188A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MX9700077A MX9700077A (es) 1994-06-24 1995-06-20 Composiciones blanqueadoras de hipoclorito.
JP8503240A JPH10502121A (ja) 1994-06-24 1995-06-20 次亜塩素酸塩漂白組成物

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94870104.0 1994-06-24
EP94870104A EP0688857B1 (fr) 1994-06-24 1994-06-24 Compositions de blanchiment à base d'hypochlorite

Publications (1)

Publication Number Publication Date
WO1996000188A1 true WO1996000188A1 (fr) 1996-01-04

Family

ID=8218652

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/007663 WO1996000188A1 (fr) 1994-06-24 1995-06-20 Compositions de blanchiment a base d'hypochlorite

Country Status (11)

Country Link
EP (1) EP0688857B1 (fr)
JP (1) JPH10502121A (fr)
CN (1) CN1048694C (fr)
AT (1) ATE186565T1 (fr)
DE (1) DE69421609T2 (fr)
DK (1) DK0688857T3 (fr)
ES (1) ES2138061T3 (fr)
GR (1) GR3031918T3 (fr)
MX (1) MX9700077A (fr)
PT (1) PT688857E (fr)
WO (1) WO1996000188A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6211131B1 (en) 1996-05-10 2001-04-03 The Clorox Company Sequesterants as hypochlorite bleach enhancers

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4921896A (en) * 1995-03-03 1996-09-23 Procter & Gamble Company, The Cleaning compositions with reduced skin malodor
EP0905225B1 (fr) * 1997-09-19 2006-11-08 The Procter & Gamble Company Procédés pour le blanchissage du linge
AU3416699A (en) * 1998-04-09 1999-11-01 Unilever Plc Toilet cleaning blocks
CZ20003729A3 (cs) * 1998-04-09 2001-10-17 Unilever N. V. Blok do toalet
GB0222501D0 (en) * 2002-09-27 2002-11-06 Unilever Plc Composition and method for bleaching a substrate
EP2112218B1 (fr) * 2008-04-25 2011-08-17 The Procter & Gamble Company Composition de blanchissement colorée
US20100175198A1 (en) 2009-01-13 2010-07-15 Kik Custom Products Inc. Hypochlorite Composition with Enhanced Fabric and Equipment Safety Benefits
CN102877287B (zh) * 2012-10-19 2014-12-17 常州大学 一种含卤胺的抗菌纤维素织物的制备方法
CN107299521A (zh) * 2016-04-08 2017-10-27 中国石化仪征化纤有限责任公司 用于聚酰胺酯纤维及其织物的漂白剂及其常温漂白方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065545A (en) * 1976-01-29 1977-12-27 Imperial Chemical Industries Limited Stabilized hypochlorous acid and hypochlorite solutions
US4120650A (en) * 1977-12-05 1978-10-17 Basf Wyandotte Corporation Laundering process for dual bleaching stained fabrics
US4622037A (en) * 1984-05-16 1986-11-11 Basf Aktiengesellschaft Bleaching cotton-containing fabrics with hypochlorite at elevated temperatures
US4852990A (en) * 1987-08-24 1989-08-01 The Virkler Company Process for bleaching denim fabrics and garments
US5185096A (en) * 1991-03-20 1993-02-09 Colgate-Palmolive Co. Aqueous liquid automatic dishwashing detergent composition comprising hypochlorite bleach and bleach stabilizer
US5236614A (en) * 1990-09-25 1993-08-17 Colgate-Palmolive Company Stable microemulsion disinfecting detergent composition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474677A (en) * 1981-11-06 1984-10-02 Lever Brothers Company Colored aqueous alkalimetal hypochlorite compositions
WO1988005461A1 (fr) * 1987-01-23 1988-07-28 Molony Donald P Composition de carbonate de sodium/hydroxyde de sodium/hypochlorite de sodium et procede de detachage
EP0565788A1 (fr) * 1992-04-15 1993-10-20 Colgate-Palmolive Company Composition détergente aqueuse liquide pour le lavage automatique de la vaisselle contenant un agent de blanchiment à base d'hypochlorite et un stabilisateur de blanchiment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065545A (en) * 1976-01-29 1977-12-27 Imperial Chemical Industries Limited Stabilized hypochlorous acid and hypochlorite solutions
US4120650A (en) * 1977-12-05 1978-10-17 Basf Wyandotte Corporation Laundering process for dual bleaching stained fabrics
US4622037A (en) * 1984-05-16 1986-11-11 Basf Aktiengesellschaft Bleaching cotton-containing fabrics with hypochlorite at elevated temperatures
US4852990A (en) * 1987-08-24 1989-08-01 The Virkler Company Process for bleaching denim fabrics and garments
US5236614A (en) * 1990-09-25 1993-08-17 Colgate-Palmolive Company Stable microemulsion disinfecting detergent composition
US5185096A (en) * 1991-03-20 1993-02-09 Colgate-Palmolive Co. Aqueous liquid automatic dishwashing detergent composition comprising hypochlorite bleach and bleach stabilizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6211131B1 (en) 1996-05-10 2001-04-03 The Clorox Company Sequesterants as hypochlorite bleach enhancers
US6297209B1 (en) 1996-05-10 2001-10-02 The Clorox Company Sequesterants as hypochlorite bleach enhancers

Also Published As

Publication number Publication date
ATE186565T1 (de) 1999-11-15
MX9700077A (es) 1997-04-30
PT688857E (pt) 2000-04-28
EP0688857A1 (fr) 1995-12-27
CN1048694C (zh) 2000-01-26
EP0688857B1 (fr) 1999-11-10
DE69421609D1 (de) 1999-12-16
ES2138061T3 (es) 2000-01-01
DE69421609T2 (de) 2000-06-29
GR3031918T3 (en) 2000-03-31
DK0688857T3 (da) 2000-04-10
JPH10502121A (ja) 1998-02-24
CN1151148A (zh) 1997-06-04

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