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EP 3 870 338 A1

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(43) Date of publication: 01.09.2021 Bulletin 2021/35 (21) Application number: 19877095.0 (22) Date of filing: 22.10.2019

(51) International Patent Classification (IPC):  B01D 53/02(2006.01) B01D 53/86(2006.01) B01J 23/34(2006.01) B01D 53/04(2006.01) B01D 53/94(2006.01) B01J 23/656(2006.01) (86) International application number: PCT/US2019/057348 (87) International publication number: WO 2020/086525 (30.04.2020 Gazette 2020/18)

(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: 23.10.2018 WO PCT/CN2018/111425 (71) Applicant: BASF CORPORATION Florham Park, NJ 07932 (US)	(72) Inventors: GU, Ting Shanghai, 200137 (CN) CHEN, Chen Shanghai, 201206 (CN) (74) Representative: BASF IP Association  BASF SE GBI-C006 67056 Ludwigshafen 67056 Ludwigshafen (DE)