(19)

(11)

EP 4 426 773 A1

(12)

(43) Date of publication: 11.09.2024 Bulletin 2024/37 (21) Application number: 22802251.3 (22) Date of filing: 17.10.2022

(51) International Patent Classification (IPC):  C08J 9/00(2006.01) E04F 15/12(2006.01) C08J 9/236(2006.01) (52) Cooperative Patent Classification (CPC): C08J 9/236; C08J 2325/06; C08J 2300/30; C08J 9/0061; E04F 15/18; C08J 9/33; C08J 2309/08; C08J 2409/08; C08J 2425/06; C08J 9/224 (86) International application number: PCT/IB2022/059935 (87) International publication number: WO 2023/079390 (11.05.2023 Gazette 2023/19)

(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 (30) Priority: 05.11.2021 BE 202105864 (71) Applicant: Isostar BV 9420 Erpe-Mere (BE)	(72) Inventor: STAMPER, Christof 9420 Erpe-Mere (BE) (74) Representative: Brantsandpatents bv  Pauline Van Pottelsberghelaan 24 9051 Ghent 9051 Ghent (BE)