WO1994020600A1 - Agents decolorants - Google Patents

Agents decolorants Download PDF

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Publication number
WO1994020600A1
WO1994020600A1 PCT/EP1994/000465 EP9400465W WO9420600A1 WO 1994020600 A1 WO1994020600 A1 WO 1994020600A1 EP 9400465 W EP9400465 W EP 9400465W WO 9420600 A1 WO9420600 A1 WO 9420600A1
Authority
WO
WIPO (PCT)
Prior art keywords
peroxyacid
binding agent
acid
weight
metal ions
Prior art date
Application number
PCT/EP1994/000465
Other languages
English (en)
Inventor
Alexander Allan
John Oakes
David William Thornthwaite
Original Assignee
Unilever N.V.
Unilever Plc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10731524&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1994020600(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Unilever N.V., Unilever Plc filed Critical Unilever N.V.
Priority to AU61416/94A priority Critical patent/AU6141694A/en
Priority to DE69401499T priority patent/DE69401499T2/de
Priority to JP6519512A priority patent/JPH08507761A/ja
Priority to BR9405941A priority patent/BR9405941A/pt
Priority to EP94908344A priority patent/EP0687293B1/fr
Publication of WO1994020600A1 publication Critical patent/WO1994020600A1/fr

Links

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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3937—Stabilising agents
    • C11D3/394—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3937—Stabilising agents
    • 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
    • C11D3/3945—Organic per-compounds

Definitions

  • This invention is concerned with organic peroxyacids and their manufacture.
  • the invention is particularly con ⁇ cerned with the stability of said organic peroxyacids.
  • Organic peroxyacids are able to function as bleaching agents in a detergent composition.
  • Organic peroxyacids which have been proposed for such use include peroxybenzoic acid, peroxyphthalic acid, isomers and substituted derivatives thereof, peroxyalkanoic acids and diperoxyalkanedioic acids such as diperoxyazelaic acid and diperoxydodecanedioic acid. Discussion of such acids can be found in US Patents 4,100,095, 4,170,453 and 4,325,828 as well as numerous other documents.
  • Another series of acids which have been proposed are phthalimido substituted peroxyalkanoic acids disclosed in EP-A-325288.
  • WO 90/07501 (Interox) describes the variation in stability of peroxyacids according to features of their structure. This document teaches that phthalimido peroxyacetic acid is somewhat explosive whereas longer chain ho ologues are relatively more stable.
  • transition metal ions can catalyse unwanted decomposition of peroxyacid compounds and it has, therefore, been proposed to mix peroxyacid com- pounds with chelating agents to enhance storage stability of organic peroxyacid-containing compositions and/or stabilise the wash liquor against unwanted decomposition of the peroxyacid.
  • chelating agents are disclosed in US Patents 4,170,453 and 4,100,095. This disclosure is also reviewed in EP-349220.
  • organic peroxyacids may be incorporated into compositions which contain only a minority proportion of peroxyacid and which also contain a chelating agent for sequestering transition metal ions, this chelating agent being incorporated for the purpose of promoting storage stability of the peroxyacid and/or stability of the peroxyacid in a wash liquor during use.
  • a chelating agent for sequestering transition metal ions such as sodium citrate
  • European published application 349220 is concerned with amidoperoxyacids which contain an amide link in a hydrocar ⁇ bon chain.
  • This Patent teaches that the storage stability of these peracids can be improved considerably by washing the peracids with phosphate buffer and leaving some phosphate in contact with the peracid after washing.
  • the amidoperoxyacids are acid sensitive and this beneficial effect of phosphate buffer is prin ⁇ cipally attributed to neutralisation of residual strong acid left from the reaction in which the amido peroxyacid is prepared.
  • the phosphates which are used may be or- thophosphates or pyrophosphates or a mixture of the two. Such phosphates have the ability to sequester transition metal ions.
  • the present invention provides the use of a binding agent for transition metal ions to enhance stability of a substantially water-in ⁇ soluble organic peroxyacid against exothermic decomposition initiated by heat.
  • DSC differential scanning calorimetry
  • bringing an organic peroxyacid into contact with a binding agent in accordance with this invention leads to a composition in which the temperature of thermal decomposition has increased.
  • the decomposition may also occur over a temperature range of different width.
  • differential scanning calorimetry may show an increase in the temperature at which maximum decomposition occurs and/or an increase in the temperature at which decomposition begins. The outcome of a DSC measurement will show these results as a shift in the position of a peak, or as a shift in the base of the peak at its lower temperature side, respec ⁇ tively.
  • a preferred possibility is to precipitate the organic peroxyacid in the presence of the binding agent, such that 0.3-3% by weight, preferably 1-2% by weight, more preferably 1-1.5% by weight of the binding agent, as cal ⁇ culated on the total weight of peroxyacid and binding agent, remains in contact with the peroxy acid.
  • the final pH of the thus-obtained material is in the range of from 3.5-6, preferably from 4-5. This leads to a beneficial enhancement of stability, and moreover it is then possible to -wash the peroxyacid further without losing the enhanced stability.
  • a composition obtained in this way is more robust than compositions obtained in other ways.
  • Binding agents for transition metals which are suitable for the present invention include dihydrogen orthophosphate, pyrophosphate, polyacrylate, titanium chloride, stannic salts, and stannous salts.
  • the effectiveness and hence the suitability of a binding agent can be assessed by differen ⁇ tial scanning calorimetry as mentioned further below.
  • the preferred binding agent is dihydrogen orthophosphate.
  • Peroxyacids which are particularly envisaged include phthalimido-substituted peroxyalkanoic acids of formula
  • peroxyacids are the diperoxy alkane dioic acids of formula HO 3 C-R-CO 3 H and peroxyalkanoic acids of formula
  • reaction medium comprises a mineral acid, such as sulphuric acid
  • all or part of it can be premixed with the hydrogen peroxide to form an equilibrium mixture containing for example permonosulphuric acid that can itself perform the peroxidation reaction.
  • premixing separates the exothermic dilution/reaction between hydrogen peroxide and sulphuric acid from the peroxidation reaction.
  • DSC differential scanning calorimetry
  • the mixture was cooled to below 5°C in a water/ice bath.
  • aqueous hydrogen peroxide approximately 80% w/w was added with continuous stirring into the reaction mixture progressively during a period of about 5 to 10 minutes while keeping the temperature below 5°C, until a total amount of 3.5 moles per mole of carboxylic acid has been introduced, i.e. a 2.5 molar excess compared with the stoichiometric amount.
  • the reaction mixture was then stirred for a further 50 minutes.
  • reaction mixture was poured into a stirred, ice cold solution consisting of 30 grams disodium hydrogen orthophosphate dissolved in 750 grams demineralised water. Before addition this solution was at approximately pH 8.0 and at the end of the addition the pH had dropped to between pH 4.0 and pH 4.5.
  • phthalimido-6-peroxyhexanoic acid was investigated by DSC. The resulting print-out is reproduced as Fig. 5. This sample contained about 5% of the corresponding phthalimido hexanoic acid. It can be seen that this sample showed endothermic melting between about 80 and 90°C followed by exothermic decomposition reaching a maximum at about 125°C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Amélioration de la stabilité d'un peroxyacide sensiblement non hydrosoluble, vis-à-vis de la décomposition exothermique provoquée par la chaleur, par mise en contact du peroxyacide avec un agent de liaison d'ions d'éléments de transition. Selon le mode préféré de réalisation, on améliore cette stabilité en provoquant la précipitation du peroxyacide en présence de l'agent de liaison.
PCT/EP1994/000465 1993-03-05 1994-02-17 Agents decolorants WO1994020600A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU61416/94A AU6141694A (en) 1993-03-05 1994-02-17 Bleaching agents
DE69401499T DE69401499T2 (de) 1993-03-05 1994-02-17 Bleichmittel
JP6519512A JPH08507761A (ja) 1993-03-05 1994-02-17 漂白剤
BR9405941A BR9405941A (pt) 1993-03-05 1994-02-17 Uso de um agente de ligação para ions de metal de transição processo para melhorar a estabilidade térmica de um peróxi-ácido orgânico e composição
EP94908344A EP0687293B1 (fr) 1993-03-05 1994-02-17 Agents decolorants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9304513.6 1993-03-05
GB939304513A GB9304513D0 (en) 1993-03-05 1993-03-05 Bleaching agents

Publications (1)

Publication Number Publication Date
WO1994020600A1 true WO1994020600A1 (fr) 1994-09-15

Family

ID=10731524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/000465 WO1994020600A1 (fr) 1993-03-05 1994-02-17 Agents decolorants

Country Status (10)

Country Link
EP (1) EP0687293B1 (fr)
JP (1) JPH08507761A (fr)
AU (1) AU6141694A (fr)
BR (1) BR9405941A (fr)
CA (1) CA2156170A1 (fr)
DE (1) DE69401499T2 (fr)
ES (1) ES2097642T3 (fr)
GB (1) GB9304513D0 (fr)
WO (1) WO1994020600A1 (fr)
ZA (1) ZA941270B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5928382A (en) * 1995-08-22 1999-07-27 Clariant Gmbh Bleaching composition comprising polyoxometallates as bleaching catalyst
US8110603B2 (en) 2005-07-27 2012-02-07 Mitsubishi Gas Chemical Company, Inc. Organic peracid polymer composition and process for producing the same
WO2021202625A1 (fr) * 2020-03-31 2021-10-07 Ecolab Usa Inc. Procédé de désactivation de réactions d'emballement d'acide peroxycarboxylique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844305B1 (en) 1999-08-27 2005-01-18 The Proctor & Gamble Company Aqueous liquid detergent compositions comprising a polymeric stabilization system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103416A1 (fr) * 1982-08-19 1984-03-21 THE PROCTER & GAMBLE COMPANY Composition de blanchissement d'acide péroxy
GB2129457A (en) * 1982-10-21 1984-05-16 Colgate Palmolive Co Stabilized bleaching and laundering composition
EP0349220A2 (fr) * 1988-06-30 1990-01-03 The Procter & Gamble Company Lavage d'acide peroxyamidique avec un tampon de phosphate pour modifier la stabilité de stockage
EP0373691A2 (fr) * 1988-12-16 1990-06-20 Unilever N.V. Compositions granulaires de blanchiment stabilisées
EP0376360A1 (fr) * 1988-11-25 1990-07-04 Akzo Nobel N.V. Procédé pour la préparation d'agents de blanchiment granulés
DE3906768A1 (de) * 1989-03-03 1990-09-06 Henkel Kgaa Peroxycarbonsaeuren und deren verwendung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103416A1 (fr) * 1982-08-19 1984-03-21 THE PROCTER & GAMBLE COMPANY Composition de blanchissement d'acide péroxy
GB2129457A (en) * 1982-10-21 1984-05-16 Colgate Palmolive Co Stabilized bleaching and laundering composition
EP0349220A2 (fr) * 1988-06-30 1990-01-03 The Procter & Gamble Company Lavage d'acide peroxyamidique avec un tampon de phosphate pour modifier la stabilité de stockage
EP0376360A1 (fr) * 1988-11-25 1990-07-04 Akzo Nobel N.V. Procédé pour la préparation d'agents de blanchiment granulés
EP0373691A2 (fr) * 1988-12-16 1990-06-20 Unilever N.V. Compositions granulaires de blanchiment stabilisées
DE3906768A1 (de) * 1989-03-03 1990-09-06 Henkel Kgaa Peroxycarbonsaeuren und deren verwendung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5928382A (en) * 1995-08-22 1999-07-27 Clariant Gmbh Bleaching composition comprising polyoxometallates as bleaching catalyst
US8110603B2 (en) 2005-07-27 2012-02-07 Mitsubishi Gas Chemical Company, Inc. Organic peracid polymer composition and process for producing the same
WO2021202625A1 (fr) * 2020-03-31 2021-10-07 Ecolab Usa Inc. Procédé de désactivation de réactions d'emballement d'acide peroxycarboxylique

Also Published As

Publication number Publication date
EP0687293B1 (fr) 1997-01-15
DE69401499D1 (de) 1997-02-27
DE69401499T2 (de) 1997-05-15
ZA941270B (en) 1995-08-24
GB9304513D0 (en) 1993-04-21
EP0687293A1 (fr) 1995-12-20
ES2097642T3 (es) 1997-04-01
AU6141694A (en) 1994-09-26
BR9405941A (pt) 1996-02-06
JPH08507761A (ja) 1996-08-20
CA2156170A1 (fr) 1994-09-15

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