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(11)

EP 4 090 527 A1

(12)

(43) Date of publication: 23.11.2022 Bulletin 2022/47 (21) Application number: 20702696.4 (22) Date of filing: 17.01.2020

(51) International Patent Classification (IPC):  B32B 1/00(2006.01) B32B 19/00(2006.01) C08F 210/00(2006.01) B32B 15/02(2006.01) B65D 85/00(2006.01) C08L 23/08(2006.01) (52) Cooperative Patent Classification (CPC): C08L 23/0815; C08L 2201/10; C08L 2203/10; C08L 2203/16; C08L 2205/02; C08F 2420/04; C08J 5/18; C08J 2323/08; C08J 2423/08; C08F 4/65908; C08F 4/65912; C08F 210/16   C-Sets: C08F 210/16, C08F 210/14, C08F 2500/12, C08F 2500/17, C08F 2500/06, C08F 2500/10, C08F 2500/20, C08F 2500/26, C08F 2500/27, C08F 2500/34, C08F 2500/38, C08F 2500/28, C08F 2500/37, C08F 2500/07, C08F 2500/35; C08L 23/0815, C08L 23/0815, C08K 5/098; C08L 23/0815, C08L 23/0815; C08F 210/16, C08F 2/001; C08F 210/16, C08F 4/6592; (86) International application number: PCT/IB2020/050377 (87) International publication number: WO 2021/144615 (22.07.2021 Gazette 2021/29)

(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: Nova Chemicals (International) S.A. 1700 Fribourg (CH)	(72) Inventors: WANG, Xiaochuan Calgary, Alberta T3G 5P7 (CA) SALOMONS, Stephen Calgary, Alberta T3M 0J2 (CA) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)