(19)
(11) EP 0 442 549 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.01.1992 Bulletin 1992/02

(43) Date of publication A2:
21.08.1991 Bulletin 1991/34

(21) Application number: 91200119.5

(22) Date of filing: 22.01.1991
(51) International Patent Classification (IPC)5: C11D 3/39
(84) Designated Contracting States:
CH DE ES FR GB IT LI NL SE

(30) Priority: 13.02.1990 GB 9003200

(71) Applicants:
  • UNILEVER N.V.
    NL-3013 AL Rotterdam (NL)

    CH DE ES FR IT LI NL SE 
  • UNILEVER PLC
    London EC4P 4BQ (GB)

    GB 

(72) Inventors:
  • Barnes, Stephen George
    Bebington, Wirral, Merseyside L63 3JW (GB)
  • Finch, Timothy David
    Bebington, Wirral, Merseyside L63 3JW (GB)
  • Thompson, Ian
    Bebington, Wirral, Merseyside L63 3JW (GB)

(74) Representative: Linn, Samuel Jonathan et al
MEWBURN ELLIS York House 23 Kingsway
London WC2B 6HP
London WC2B 6HP (GB)


(56) References cited: : 
   
       


    (54) Aqueous liquid bleach composition


    (57) An aqueous liquid bleaching composition is described having a pH of from 1 to 6.5 and comprising a surfactant, an electrolyte and an organic peroxyacid having the formula:


    wherein X is H, alkyl, halogen, a carboxyl group, or the same peroxycarboxylic acid group:


    in symmetrical position to the first peroxyacid group on the aromatic ring;
    R is a straight or branched chain lower alkylene having 1-4 carbon atoms, preferably -CHâ‚‚-; and n is an integer from 1-12, preferably from 3-8. A preferred peroxyacid is phthaloylaminoperoxycaproic acid.





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