(19)

(11)

EP 4 823 812 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 23841194.6 (22) Date of filing: 12.12.2023

(51) International Patent Classification (IPC):  B27D 1/04(2006.01) C09J 197/00(2006.01) C08L 97/02(2006.01) (52) Cooperative Patent Classification (CPC): B27D 1/04; C08L 97/02; C09J 197/005; C08K 2003/265; C09J 161/06   C-Sets: C09J 161/06, C08L 97/005, C08K 3/26; (86) International application number: PCT/EP2023/085255 (87) International publication number: WO 2025/124691 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (71) Applicant: UPM-Kymmene Corporation 00100 Helsinki (FI)	(72) Inventors: PIETARINEN, Suvi 00100 Helsinki (FI) SUOMELA-UOTILA, Heidi 00100 Helsinki (FI) PYKÄLÄINEN, Nina 00100 Helsinki (FI) VALKONEN, Sanna 00100 Helsinki (FI) (74) Representative: Papula Oy  P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)