(19)

(11)

EP 4 189 051 A1

(12)

(43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21751536.0 (22) Date of filing: 26.07.2021

(51) International Patent Classification (IPC):  C11D 1/22(2006.01) C11D 3/10(2006.01) C11D 3/48(2006.01) C11D 3/08(2006.01) C11D 3/386(2006.01) C11D 11/00(2006.01) (52) Cooperative Patent Classification (CPC): C11D 1/22; C11D 3/08; C11D 3/10; C11D 3/386; C11D 3/38627; C11D 3/38636; C11D 3/38645; C11D 3/48; C11D 11/0017 (86) International application number: PCT/EP2021/070828 (87) International publication number: WO 2022/023250 (03.02.2022 Gazette 2022/05)

(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: 27.07.2020 IN 202021032167 23.09.2020 EP 20197763 (71) Applicants: 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  Unilever Global IP Limited Wirral, Merseyside CH62 4ZD (GB) CY DE GB IE IT MT RS TR

(72) Inventors: KOHLI, Gurpreet, Singh Mumbai 400 099 Maharastra (IN) MEDEPALLI, Srilaxmi, Venkata 560066 Karnataka (IN) REDDY, Yugandhar,B.S. 560066 Karnataka (IN) TELKAR, Asha 560066 Karnataka (IN) (74) Representative: McHugh, Paul Edward  Unilever Patent Group Bronland 14 6708 WH Wageningen 6708 WH Wageningen (NL)