(19)

(11)

EP 2 496 676 A1

(12)

(43) Date of publication: 12.09.2012 Bulletin 2012/37 (21) Application number: 09748116.2 (22) Date of filing: 05.11.2009

(51) International Patent Classification (IPC):  C11D 3/22(2006.01) C11D 3/50(2006.01) (86) International application number: PCT/EP2009/064702 (87) International publication number: WO 2011/054389 (12.05.2011 Gazette 2011/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (71) Applicants: Unilever PLC Blackfriars London Greater London EC4Y 0DY (GB) CY GB IE MT  Unilever NV 3013 AL Rotterdam (NL) AT BE BG CH CZ DE DK EE ES FI FR GR HR HU IS IT LI LT LU LV MC MK NL NO PL PT RO SE SI SK SM TR	(72) Inventors: FERGUSON, Paul Wirral Merseyside CH63 3JW (GB) JONES, Christopher, Clarkson Wirral Merseyside CH63 3JW (GB) (74) Representative: McHugh, Paul Edward  Unilever PLC Unilever Patent Group Colworth House Sharnbrook Bedford Bedfordshire MK44 1LQ Bedford Bedfordshire MK44 1LQ (GB)