(19)

(11)

EP 4 255 997 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 21836071.7 (22) Date of filing: 07.12.2021

(51) International Patent Classification (IPC):  C09J 7/10(2018.01) C09J 7/38(2018.01) (52) Cooperative Patent Classification (CPC): C09J 7/10; C09J 7/38; C09J 2301/208; C09J 2301/302; C09J 2301/412; C09J 2301/408; C09J 2301/416; C09J 2433/00; C08K 9/10; C09J 2203/326 (86) International application number: PCT/EP2021/084674 (87) International publication number: WO 2022/122774 (16.06.2022 Gazette 2022/24)

(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: 07.12.2020 CN 202011436447 (71) Applicant: tesa SE 22848 Norderstedt (DE)	(72) Inventors: LIU, Lei Suzhou, Jiangsu 131-202 (CN) CHENG, Xiao Suzhou, Jiangsu 23-802 (CN) MAATZ, Gero 40597 Düsseldorf (DE) (74) Representative: tesa SE  Hugo-Kirchberg-Straße 1 22848 Norderstedt 22848 Norderstedt (DE)