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EP 4 561 962 A1

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(43) Date of publication: 04.06.2025 Bulletin 2025/23 (21) Application number: 23749000.8 (22) Date of filing: 26.07.2023

(51) International Patent Classification (IPC):  C04B 35/043(2006.01) C04B 35/628(2006.01) C04B 35/101(2006.01) C01B 33/146(2006.01) (52) Cooperative Patent Classification (CPC): C04B 35/043; C04B 35/0435; C04B 35/101; C04B 35/62813; C04B 35/62802; C04B 2235/3217; C04B 2235/3418; C04B 2235/3206; C04B 2235/5427; C04B 2235/5436; C04B 2235/6567; C04B 2235/6562; C04B 2235/96; C04B 2235/9615; C01B 33/146 (86) International application number: PCT/EP2023/070788 (87) International publication number: WO 2024/023191 (01.02.2024 Gazette 2024/05)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 27.07.2022 EP 22187350 (71) Applicant: Nouryon Chemicals International B.V. 1101 BZ Amsterdam (NL)	(72) Inventors: TIBA, Paulo Roberto Teruo 1101 BZ Amsterdam (NL) MARTINATTI, Isabela Santos 1101 BZ Amsterdam (NL) GREENWOOD, Peter Harry Johan 1101 BZ Amsterdam (NL) SALOMÃO, Rafael 1101 BZ Amsterdam (NL) (74) Representative: LKGlobal UK Ltd.  Cambridge House Henry Street Bath BA1 1BT Bath BA1 1BT (GB)