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EP 3 921 402 A1

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(43) Date of publication: 15.12.2021 Bulletin 2021/50 (21) Application number: 20701792.2 (22) Date of filing: 30.01.2020

(51) International Patent Classification (IPC):  C11D 3/48(2006.01) C11D 3/37(2006.01) C11D 3/00(2006.01) C11D 1/83(2006.01) C11D 3/36(2006.01) (52) Cooperative Patent Classification (CPC): C11D 1/83; C11D 1/146; C11D 3/3723; C11D 3/3715; C11D 1/721; C11D 3/48; C11D 3/364; C11D 3/361; C11D 3/0036; C11D 1/22 (86) International application number: PCT/EP2020/052274 (87) International publication number: WO 2020/160996 (13.08.2020 Gazette 2020/33)

(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 Designated Validation States: KH MA MD TN (30) Priority: 04.02.2019 EP 19155358 (71) Applicants: UNILEVER GLOBAL IP LIMITED Wirral Merseyside CH62 4ZD (GB) CY DE GB IE IT MT RS TR  Unilever IP Holdings B.V. 3013 AL Rotterdam (NL) AL AT BE BG CH CZ DK EE ES FI FR GR HR HU IS LI LT LU LV MC MK NL NO PL PT RO SE SI SK SM

(72) Inventors: BELL, Nathan, Robert Wirral Merseyside CH63 3JW (GB) GRANT, Gary,Alan,Robert Wirral Merseyside CH63 3JW (GB) KENNEDY, David,Rankin Wirral Merseyside CH63 3JW (GB) SMITH, Emily, Grace Wirral Merseyside CH63 3JW (GB) (74) Representative: Corsten, Michael Allan  Unilever N.V. Unilever Patent Group Bronland 14 6708 WH Wageningen 6708 WH Wageningen (NL)