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(11)

EP 2 838 982 A1

(12)

(43) Date of publication: 25.02.2015 Bulletin 2015/09 (21) Application number: 13716273.1 (22) Date of filing: 10.04.2013

(51) International Patent Classification (IPC):  C11D 1/62(2006.01) C11D 3/50(2006.01) C11D 3/00(2006.01) C11D 3/48(2006.01) (86) International application number: PCT/EP2013/057512 (87) International publication number: WO 2013/156371 (24.10.2013 Gazette 2013/43)

(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 Designated Extension States: BA ME (30) Priority: 17.04.2012 EP 12164379 (71) Applicants: Unilever PLC London, Greater London EC4Y 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) Inventors: METCALFE, Kenneth Bebington Wirral Merseyside CH63 3JW (GB) SMITH, Ian, Karl Bebington Wirral Merseyside CH63 3JW (GB) THEOBALD, Allister, John Bebington Wirral Merseyside CH63 3JW (GB) (74) Representative: Webster, Jeremy Mark et al Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)