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EP 3 423 536 A1

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(43) Date of publication: 09.01.2019 Bulletin 2019/02 (21) Application number: 16891932.2 (22) Date of filing: 29.02.2016

(51) International Patent Classification (IPC):  C09D 175/04(2006.01) A61K 8/87(2006.01) C08J 5/18(2006.01) (86) International application number: PCT/CN2016/074802 (87) International publication number: WO 2017/147739 (08.09.2017 Gazette 2017/36)

(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: MA MD (71) Applicant: Covestro Deutschland AG 51373 Leverkusen (DE)	(72) Inventors: XIONG, Xiaohui Shanghai 200126 (CN) LIU, Alice Shanghai (CN) DOERR, Sebastian 40593 Duesseldorf (DE) VIALA, Sophie 50937 Koeln (DE) (74) Representative: Levpat  c/o Covestro AG Gebäude 4825 51365 Leverkusen 51365 Leverkusen (DE)