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(11)

EP 4 165 158 A1

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(43) Date of publication: 19.04.2023 Bulletin 2023/16 (21) Application number: 21730617.4 (22) Date of filing: 09.06.2021

(51) International Patent Classification (IPC):  C11D 3/48(2006.01) C11D 3/20(2006.01) C11D 7/26(2006.01) C11D 3/39(2006.01) C11D 3/36(2006.01) C11D 7/36(2006.01) (52) Cooperative Patent Classification (CPC): C11D 3/48; C11D 3/3942; C11D 3/3947; C11D 3/2086; C11D 3/361; C11D 7/265; C11D 7/36 (86) International application number: PCT/EP2021/065377 (87) International publication number: WO 2021/250049 (16.12.2021 Gazette 2021/50)

(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: 10.06.2020 EP 20382501 (71) Applicant: La Superquimica, S.A. 08907 L'Hospitalet de Llobregat (ES)	(72) Inventors: COSTAN LONGARES, Ana 08100 MOLLET DEL VALLES (ES) MARTÍNEZ MILAGROS, Pilar 08750 MOLINS DE REI (ES) ROMA VIVES, Elisabeth 08328 ALELLA (ES) (74) Representative: ZBM Patents - Zea, Barlocci & Markvardsen  Rambla Catalunya, 123 08008 Barcelona 08008 Barcelona (ES)