(19)
(11) EP 2 330 178 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.05.2014 Bulletin 2014/20

(43) Date of publication A2:
08.06.2011 Bulletin 2011/23

(21) Application number: 10183587.4

(22) Date of filing: 20.09.2002
(51) International Patent Classification (IPC): 
C11D 3/22(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

(30) Priority: 09.11.2001 GB 0127036

(62) Application number of the earlier application in accordance with Art. 76 EPC:
02774634.6 / 1442109

(71) Applicant: Unilever PLC, A Company Registered in England and Wales under Company no. 41424
London EC4Y 0DY Greater London (GB)

(72) Inventors:
  • ROGERS, Susanne, Henning
    Bebington, Wirral, Merseyside CH63 3JW (GB)
  • WHITE, Michael, Stephen
    Bebington, Wirral, Merseyside CH63 3JW (GB)

(74) Representative: Bristow, Stephen Robert 
Unilever Patent Group Colworth House Sharnbrook
Bedford, MK44 1LQ
Bedford, MK44 1LQ (GB)

   


(54) Polymers for laundry applications


(57) The present invention relates to use of a compound for promoting soil release during laundering of a textile fabric, the compound being a polymer having the general formula:-

characterised in that each SU represents a sugar unit in a polysaccharide backbone; a represents the number of unsubstituted sugar units as a percentage of the total number of sugar units and is in the range from 0 to 99.9%, preferably 65 to 99%, more preferably 80 to 99%; b represents the number of substituted sugar units as a percentage of the total number of sugar units and is in the range from 0.1 to 100%, preferably 1 to 35%, more preferably 1 to 20%;m represents the degree of substitution per sugar unit and is from 1 to 3;L represents an ester or ether linkage; and R1 represents a substituted alkyl group, preferably a hydroxyalkyl, carboxyalkyl or sulfoalkyl group or a salt thereof. A method of promoting soil release during laundering of a textile fabric and the use of such polymers in the manufacture of a laundry cleaning composition for effecting soil release from a laundry item form other aspects of the invention.





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