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(11)

EP 4 251 419 A1

(12)

(43) Date of publication: 04.10.2023 Bulletin 2023/40 (21) Application number: 21898809.5 (22) Date of filing: 26.10.2021

(51) International Patent Classification (IPC):  B32B 23/08(2006.01) B32B 33/00(2006.01) C09D 101/12(2006.01) C08K 3/015(2018.01) B32B 27/30(2006.01) C09D 5/00(2006.01) C08K 3/04(2006.01) C08K 3/016(2018.01) (52) Cooperative Patent Classification (CPC): C08K 3/016; C09D 101/12; B32B 2307/3065; B32B 7/023; B32B 7/022; B32B 23/20; B32B 27/18; B32B 2264/1051; B32B 2307/418; B32B 2264/301; B32B 2307/30; B32B 23/08; B32B 2307/732; B32B 2264/1022; B32B 23/04; B32B 27/304; B32B 27/08 (86) International application number: PCT/SG2021/050652 (87) International publication number: WO 2022/115032 (02.06.2022 Gazette 2022/22)

(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: 26.11.2020 SG 10202011772T (71) Applicant: Nanyang Technological University Singapore 639798 (SG)	(72) Inventors: LI, Hong Singapore 639798 (SG) FEI, Jipeng Singapore 639798 (SG) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)