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(11)

EP 2 553 072 A1

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(43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11708472.3 (22) Date of filing: 16.03.2011

(51) International Patent Classification (IPC):  C11D 1/66(2006.01) C11D 3/37(2006.01) C11D 3/20(2006.01) (86) International application number: PCT/EP2011/053955 (87) International publication number: WO 2011/120799 (06.10.2011 Gazette 2011/40)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR (30) Priority: 01.04.2010 EP 10003640 (71) Applicants: Unilever PLC London, Greater London EC4P 0DY (GB) CY GB IE MT  Unilever N.V. 3013 AL Rotterdam (NL) AL 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 RS SE SI SK SM TR

(72) Inventor: RYAN, Philip, Michael Wirral Merseyside CH63 3JW (GB) (74) Representative: Bristow, Stephen Robert  Unilever Patent Group Colworth House Sharnbrook Bedford, MK44 1LQ Bedford, MK44 1LQ (GB)