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EP0257700A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Improved bleaching or detergent bleach composition

Assignee: Unilever PLC
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Filing: 1987-08-14
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Granted: —
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Expires: 2007-08-14
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Abstract

Abstract Improved bleaching or detergent bleach compositions are disclosed which comprise a percompound, such as sodium perborate, and i) a mixture of at least two peroxyacid bleach precursors wherein R₁ is a lower alkyl group containing 1-4 carbon atoms, or a phenyl group; R₂ is a higher alkyl, aryl or alicyclic radical (substituted or unsubstituted) containing 6-20 carbon atoms; n is 0-1; m is 1-4 and L is a leaving group which exerts an electron-attracting effect, or ii) a peroxyacid bleach precursor of the formula wherein R₁, R₂, L and n are as defined above, and mʹ is 1-3. The compositions show improved bleaching and cleaning effect on multistained fabrics.

Inventors

  • 👤 Peter Stanford Sims

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 17:25
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 90 words
Bleaching or detergent bleach composition comprising a percompound and i) a mixture of at least two peroxyacid bleach precursors wherein R₁ is a lower alkyl group containing 1-4 carbon atoms, or a phenyl group; R₂ is a higher alkyl, aryl or alicyclic radical (substituted or unsubstituted) containing 6-20 carbon atoms; n is 0-1; m is 1-4 and L is a leaving group which exerts an electron-attracting effect, or ii) a peroxyacid bleach precursor of the formula wherein R₁, R₂, L and n are as defined above, and mʹ is 1-3.
Claim 2
Dependent Claim 90 words
Bleaching or detergent bleach composition comprising a percompound and i) a mixture of at least two peroxyacid bleach precursors wherein R₁ is a lower alkyl group containing 1-4 carbon atoms, or a phenyl group; R₂ is a higher alkyl, aryl or alicyclic radical (substituted or unsubstituted) containing 6-20 carbon atoms; n is 0-1; m is 1-4 and L is a leaving group which exerts an electron-attracting effect, or ii) a peroxyacid bleach precursor of the formula wherein R₁, R₂, L and n are as defined above, and mʹ is 1-3.
Claim 3
Dependent Claim 20 words
Bleaching or detergent bleach composition according to claim 1, characterized in that it further contains at least one surface-active agent.
Claim 4
Dependent Claim 30 words
Bleaching or detergent bleach composition according to claim 1 or 2, characterized in that it further contains a detergency builder in an amount of from 5 to 70% by weight.
Claim 5
Dependent Claim 31 words
Bleaching or detergent bleach composition according to claim 2 or 3, characterized in that it comprises from 5-50% by weight of percompound and from 1-25% by weight of peroxyacid bleach precursor.

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