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EP 4 017 914 A1

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(43) Date of publication: 29.06.2022 Bulletin 2022/26 (21) Application number: 19940795.8 (22) Date of filing: 06.08.2019

(51) International Patent Classification (IPC):  C08L 23/04(2006.01) C08J 5/00(2006.01) C08L 23/06(2006.01) C08J 3/02(2006.01) (52) Cooperative Patent Classification (CPC): C08L 23/06; C08J 3/005; C08J 2323/06; C08J 2423/06; C08J 2423/08; C08J 2423/12; C08L 2205/035; C08L 2203/14; C08J 9/0061   C-Sets: C08L 23/06, C08L 23/04, C08L 23/0815, C08L 23/12; (86) International application number: PCT/RU2019/000556 (87) International publication number: WO 2021/025578 (11.02.2021 Gazette 2021/06)

(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: Public Joint Stock Company "Sibur Holding" Tobolsk, Tyumen region 626150 (RU)	(72) Inventors: VOLKOV, Alexey Mikhailovich g. Seversk, 636019 (RU) RYZHIKOVA, Irina Gennadievna g. Seversk, 636037 (RU) LITVINENKO, Oksana Anatolievna g. Tomsk, 634061 (RU) (74) Representative: Zimmermann, Tankred Klaus  Schoppe, Zimmermann, Stöckeler Zinkler, Schenk & Partner mbB Patentanwälte Radlkoferstrasse 2 81373 München 81373 München (DE)