EP1123375B1 - Composition de blanchiment liquide epaissie a base de peroxyde d'azote - Google Patents

Composition de blanchiment liquide epaissie a base de peroxyde d'azote Download PDF

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Publication number
EP1123375B1
EP1123375B1 EP99970679A EP99970679A EP1123375B1 EP 1123375 B1 EP1123375 B1 EP 1123375B1 EP 99970679 A EP99970679 A EP 99970679A EP 99970679 A EP99970679 A EP 99970679A EP 1123375 B1 EP1123375 B1 EP 1123375B1
Authority
EP
European Patent Office
Prior art keywords
bleaching composition
alkaline
hydrogen peroxide
composition
alkali metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99970679A
Other languages
German (de)
English (en)
Other versions
EP1123375A1 (fr
Inventor
Hedeliza Malonzo Mercado
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Colgate Palmolive Co
Original Assignee
Colgate Palmolive Co
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 Colgate Palmolive Co filed Critical Colgate Palmolive Co
Publication of EP1123375A1 publication Critical patent/EP1123375A1/fr
Application granted granted Critical
Publication of EP1123375B1 publication Critical patent/EP1123375B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C11D3/044—Hydroxides or bases
    • 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
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C11D10/045—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap based on non-ionic surface-active compounds and soap
    • 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
    • C11D3/12—Water-insoluble compounds
    • C11D3/122—Sulfur-containing, e.g. sulfates, sulfites or gypsum
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/36—Organic compounds containing phosphorus
    • C11D3/361—Phosphonates, phosphinates or phosphonites
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions

Definitions

  • This invention relates to alkaline thickened liquid hydrogen peroxide bleaching compositions. More particularly, this invention relates to such alkaline thickened bleaching compositions which are highly stable in terms of providing a uniform and thickened viscosity which remains stable over time, concomitant with the ability to maintain a stable bleaching activity during extended periods of storage prior to use by the consumer.
  • Hydrogen peroxide compositions have been the focus of much attention in the patent literature in recent years as replacements for or as alternatives to halogen-containing bleaches, often motivated by environmental considerations.
  • interest has focused on alkaline hydrogen peroxide bleaches because of their greater reactivity and enhanced bleaching efficacy as compared to acidic hydrogen peroxide compositions.
  • One of the prime requirements of a bleach intended for domestic use is that the bleaching species remain sufficiently stable to insure good efficacy of the bleach product upon use by the consumer, typically many months after the products manufacture.
  • Hydrogen peroxide solutions are known to provide enhanced bleaching efficacy when used under alkaline conditions. However, stabilization of hydrogen peroxide is particularly troublesome at such alkaline conditions.
  • a thickened composition also serves to limit the rate at which the composition flows or drains from the surfaces to which it is applied.
  • a thickening agent or thickening system in the bleach composition presents problems in formulation: it is often incompatible with peroxide bleach stabilizers which are otherwise effective in non-thickened compositions, or the thickening agents themselves may provide an uneven viscosity to the liquid bleach product and, in general, adversely affect product appearance and flow characteristics depending on variables such as product pH or the non-bleach ingredients, such as electrolyte, present in the composition.
  • EP 376 704 describes hydrogen peroxide aqueous solutions which contain a combination of surfactant and electrolyte to provide thickening and bleach stability.
  • UK patent application GB 2 273 721 describes a thickened bleach composition which comprises an alkaline aqueous solution of hydrogen peroxide containing as the thickening system a mixture of a quaternary long chain alkyl ammonium compound together with a salt of an aromatic sulphonic acid hydrotrope.
  • U.S. Patent 5,736,498 is concerned with alkaline hydrogen peroxide compositions which are thickened with a polymeric thickener having a polyethylene backbone.
  • U.S. Patent 4,900,469 describes a thickened laundry composition comprising a surfactant thickening system, a hydrogen peroxide bleach and a stabilizing system consisting of a chelating agent and an antioxidant.
  • a C 6 -C 18 soap is optionally included to increase viscosity.
  • the present invention provides an alkaline thickened liquid bleaching composition with a viscosity in the range of 80 - 500 mPa.s (80 - 500 cps) comprising, by weight:
  • a method of bleaching fabrics comprising the step of contacting the fabrics to be bleached with an effective amount of the above-described alkaline thickened liquid bleaching composition.
  • the present invention is predicated on the discovery that thickening of a hydrogen peroxide bleach solution can be effectively provided with a surfactant mixture of alkyl dimethylamine oxide and soap as herein described in combination with a weak electrolyte such as an alkali metal sulfate, such that a stable commercially desirable viscosity in the range of from 80 ⁇ 10 -3 to 500 ⁇ 10 -3 m.sec/m 2 [80 to 500 cps] can be readily achieved, preferably from 100 ⁇ 10 -3 to 300 ⁇ 10 -3 m.sec/m 2 [100 to 300 cps] without adversely affecting the stability of the peroxide bleach.
  • a surfactant mixture of alkyl dimethylamine oxide and soap as herein described in combination with a weak electrolyte such as an alkali metal sulfate, such that a stable commercially desirable viscosity in the range of from 80 ⁇ 10 -3 to 500 ⁇ 10 -3 m.sec/m 2 [80 to 500 cps] can
  • the amount of hydrogen peroxide bleach present in the composition of the invention may vary from 0.1% to 10%, by weight, of the total composition.
  • Preferred compositions comprise from 2% to 6%, by weight.
  • the surfactant mixture which forms part of the thickening system is comprised of an alkyl dimethylamine oxide and a neutralized C 6 -C 18 fatty acid, such mixture being present in an amount of from 1.5 to 8%, by weight, preferably from 2% to 4%, by weight.
  • the alkyl group in the dimethylamine oxide surfactant contains from about 11 to 16 carbon atoms.
  • a preferred alkyl group is comprised of a mixture of carbon chain lengths comprising 33% to 43% of C 12 ; from 42% to 52% of C 14 ; and from 4% to 14% of C 16 .
  • Lauryl is a particularly preferred alkyl group.
  • the second component of the surfactant mixture is a C 6 -C 18 fatty acid which is neutralized in-situ by the alkali metal hydroxide in the liquid composition to form a C 6 -C 18 soap.
  • Typical fatty acids include capric acid, lauric acid, any myristic acid, but most preferred is coconut fatty acid which after neutralization forms the coconut lauryl soap.
  • the ratio of the described amine oxide surfactant to the fatty acid soap is generally from 1.5:1 to 6:1, and preferably from 2:1 to 4:1.
  • the third component of the thickening system which serves to stabilize the increased viscosity provided by the surfactant mixture is an alkali metal sulfate such as sodium or potassium or magnesium sulfate.
  • Sodium sulfate is preferred as a source of weak electrolyte which serves to stabilize the viscosity of the composition without adversely affecting the stability of the hydrogen peroxide in solution. It has been found that the presence of strong electrolyte in solution at a level to compliment the surfactant thickening such as Na 2 CO 3 , NaOH, NaHCO 3 cause decomposition of alkaline hydrogen peroxide solution and is, therefore, to be avoided in the present liquid bleaching compositions.
  • the peroxide bleach stabilizer used herein is a polyphosphonate sequestrant.
  • suitable phosphonate stabilizers include sodium or potassium salts of HEDP 1 and EDTMP 2 .
  • Most preferred is the pentasodium salt of diethylenetriamine penta (methylene phosphonic acid), which is available commercially under the trademark Dequest 2066 from the Monsanto Company.
  • An essential ingredient in the present bleaching composition is an alkali metal hydroxide such as sodium or potassium hydroxide, in an amount sufficient to neutralize in-situ the fatty acid ingredient present in the surfactant mixture so as to form the soap.
  • the alkali metal hydroxide also serves to provide an alkaline pH in the liquid bleach composition of from 8 to 9.5, and preferably from 8.2 to 9.2.
  • the amount of alkali metal hydroxide in the composition is generally from 0.10 to 0.5%.
  • the liquid bleach compositions may preferably include a pH buffer such as sodium benzoate which serves to stabilize the pH of the composition and thereby assists in stabilizing the peroxide bleach.
  • a pH buffer such as sodium benzoate which serves to stabilize the pH of the composition and thereby assists in stabilizing the peroxide bleach.
  • the sodium benzoate is present in an amount of from 0 to 2%, preferably from 0,2 to 1,5% by weight.

Claims (13)

  1. Composition de blanchiment liquide épaissie alcaline avec une viscosité dans la plage de 80·10-3 à 500·10-3 N·sec/m2 (80 à 500 cP) comprenant, en poids :
    (a) de 0,1 % à 10 % de peroxyde d'hydrogène ;
    (b) de 1,5 % à 8 % d'un mélange tensioactif comprenant
    (i) un oxyde d'alkyldiméthylamine ; et
    (ii) un savon formé par la neutralisation in situ d'un acide gras en C6 à C18 avec un hydroxyde de métal alcalin, le rapport pondéral de (i) et (ii) étant de 1,5:1 à 6:1 ;
    (c) de 0,5 % à 5 % d'un sulfate de métal alcalin sous forme d'un électrolyte ;
    (d) de 0,4 % à 1 % d'un stabilisant au phosphonate pour le peroxyde d'hydrogène ;
    (e) un hydroxyde de métal alcalin en une quantité suffisante pour réaliser la neutralisation in situ de l'acide gras en C6 à C18 mentionné précédemment pour former le savon défini dans (b) (ii), et également fournir un pH dans la plage de 8 à 9,5 pour la composition de blanchiment épaissie ;
    (f) de 0 % à 2 % de benzoate de sodium ; et
    (g) le reste étant de l'eau.
  2. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle la quantité de peroxyde d'hydrogène est de 2 % à 6 %.
  3. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle la quantité dudit mélange tensioactif est de 2 % à 4 % en poids, de la composition, et le rapport de (i) à (ii) est de 2:1 à 4:1.
  4. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle le groupe alkyle dans l'oxyde d'alkyldiméthylamine est composé d'un mélange de longueurs de chaínes carbonées comprenant sensiblement de 33 % à 43 % de C12 ; de 42 % à 52 % de C14 ; et de 4 % à 14 % de C16.
  5. Composition de blanchiment liquide épaissie alcaline selon la revendication 4, dans laquelle le tensioactif d'oxyde d'amine est l'oxyde de lauryldiméthylamine.
  6. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle le savon est un savon laurique de coco formé par la neutralisation d'un acide gras de coco avec ledit hydroxyde de métal alcalin.
  7. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle ledit électrolyte est un sulfate de sodium ou de potassium.
  8. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle ledit stabilisant au phosphonate est le sel de pentasodium de diéthylènetriamine penta (acide phosphonique de méthylène).
  9. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, dans laquelle le pH de la composition est de 8,2 à 9,2.
  10. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, qui contient du benzoate de sodium en une quantité de 0,2 % à 1,5 % en poids.
  11. Composition de blanchiment liquide épaissie alcaline selon la revendication 1, qui est caractérisée par le fait d'être sensiblement dépourvue d'un électrolyte autre que celui défini dans (c).
  12. Procédé de blanchiment de tissus comprenant les étapes consistant à mettre en contact les tissus devant être blanchis avec une quantité efficace de la composition de blanchiment liquide épaissie alcaline définie dans la revendication 1.
  13. Procédé selon la revendication 12, dans lequel le savon est un savon laurique de coco formé par la neutralisation d'un acide gras de coco avec ledit hydroxyde métallique alcalin.
EP99970679A 1998-10-22 1999-10-21 Composition de blanchiment liquide epaissie a base de peroxyde d'azote Expired - Lifetime EP1123375B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US17768898A 1998-10-22 1998-10-22
US177688 1998-10-22
PCT/US1999/024910 WO2000023555A1 (fr) 1998-10-22 1999-10-21 Composition de blanchiment liquide epaissie a base de peroxyde d'azote

Publications (2)

Publication Number Publication Date
EP1123375A1 EP1123375A1 (fr) 2001-08-16
EP1123375B1 true EP1123375B1 (fr) 2005-04-20

Family

ID=22649583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99970679A Expired - Lifetime EP1123375B1 (fr) 1998-10-22 1999-10-21 Composition de blanchiment liquide epaissie a base de peroxyde d'azote

Country Status (8)

Country Link
EP (1) EP1123375B1 (fr)
AT (1) ATE293675T1 (fr)
AU (1) AU1226800A (fr)
BR (1) BR9914702A (fr)
CA (1) CA2347430A1 (fr)
DE (1) DE69924859T2 (fr)
DK (1) DK1123375T3 (fr)
WO (1) WO2000023555A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10039031A1 (de) * 2000-08-10 2002-02-28 Henkel Ecolab Gmbh & Co Ohg Pastenförmige Persäuren
DE102005000955B4 (de) * 2005-01-07 2007-08-30 Henkel Kgaa Flüssige Bleichmittelzusammensetzung
DE102006029344A1 (de) * 2006-06-23 2007-12-27 Henkel Kgaa Zahnbehandlungsmittel mit verstärkter Bleichwirkung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900469A (en) * 1986-10-21 1990-02-13 The Clorox Company Thickened peracid precursor compositions
GB8830296D0 (en) * 1988-12-28 1989-02-22 Unilever Plc Bleaching composition
DE3906044A1 (de) * 1989-02-27 1990-08-30 Henkel Kgaa Bleichendes fluessigwaschmittel
JPH04372695A (ja) * 1991-06-20 1992-12-25 Kao Corp 漂白剤および漂白洗浄剤組成物
JP2896724B2 (ja) * 1991-12-19 1999-05-31 日本パーオキサイド株式会社 漂白用組成物
GB2273721B (en) * 1992-12-24 1996-05-01 Jeyes Group Plc Bleaches
GB9319943D0 (en) * 1993-09-28 1993-11-17 Solvay Interox Ltd Thickened compositions
GB9804068D0 (en) * 1998-02-27 1998-04-22 Mcilroy Andrew Bleach stabiliser

Also Published As

Publication number Publication date
ATE293675T1 (de) 2005-05-15
AU1226800A (en) 2000-05-08
EP1123375A1 (fr) 2001-08-16
BR9914702A (pt) 2001-07-10
DE69924859D1 (de) 2005-05-25
DK1123375T3 (da) 2005-08-15
WO2000023555A1 (fr) 2000-04-27
CA2347430A1 (fr) 2000-04-27
DE69924859T2 (de) 2006-02-23

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