(19)

(11)

EP 4 110 836 A1

(12)

(43) Date of publication: 04.01.2023 Bulletin 2023/01 (21) Application number: 20717355.0 (22) Date of filing: 28.02.2020

(51) International Patent Classification (IPC):  C08F 10/02(2006.01) C08F 4/02(2006.01) C08F 4/24(2006.01) (52) Cooperative Patent Classification (CPC): C08F 10/02; C01B 33/158; C01B 33/1546; C08F 2410/06   C-Sets: C08F 10/02, C08F 4/24; C08F 10/02, C08F 4/025; C08F 110/02, C08F 2500/07, C08F 2500/12; C08F 210/16, C08F 210/14, C08F 2500/07, C08F 2500/12; (86) International application number: PCT/US2020/020323 (87) International publication number: WO 2021/173148 (02.09.2021 Gazette 2021/35)

(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 (71) Applicant: Ecovyst Catalyst Technologies LLC Malvern, PA 19355-1740 (US)	(72) Inventors: HU, Yatao Rachel Malvern, Pennsylvania 19355 (US) SHAH, Parag Rasiklal Lafayette Hill, Pennsylvania 19444 (US) COLLOPY, Dave George Warrington Cheshire WA5 2BA (GB) PARKER, Robert Joseph Warrington Cheshire WA5 2RX (GB) LEE, Myoung Kie King of Prussia, Pennsylvania 19406 (US) (74) Representative: Finnegan Europe LLP  1 London Bridge London SE1 9BG London SE1 9BG (GB)