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EP 4 281 501 A1

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(43) Date of publication: 29.11.2023 Bulletin 2023/48 (21) Application number: 22742964.4 (22) Date of filing: 25.01.2022

(51) International Patent Classification (IPC):  C08L 33/08(2006.01) C08K 3/22(2006.01) B33Y 70/00(2020.01) B33Y 10/00(2015.01) C08L 33/10(2006.01) B29C 64/135(2017.01) B33Y 80/00(2015.01) (52) Cooperative Patent Classification (CPC): C08K 3/22; B33Y 70/10; B29C 64/124; B33Y 80/00; C08K 2201/011; C08K 2201/019; C08K 2003/222; C08K 2003/2227; C08K 2003/2251; C08K 2003/2265; C08K 2003/2289; C08K 2003/2293; C08K 2003/2296; C08L 2201/12; C08K 5/0025; C08F 220/301   C-Sets: C08K 3/22, C08L 33/14; C08K 3/22, C08L 33/08; C08K 3/22, C08L 33/10; C08K 5/0025, C08L 33/10; C08F 220/301, C08F 220/1808, C08F 222/103; (86) International application number: PCT/SG2022/050035 (87) International publication number: WO 2022/159039 (28.07.2022 Gazette 2022/30)

(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: 25.01.2021 SG 10202100797W (71) Applicant: Nanyang Technological University Singapore 639798 (SG)	(72) Inventors: NG, Chin Siang Singapore 639798 (SG) SU, Pei-Chen Singapore 639798 (SG) SUBRAMANIAN, Alamelu Suriya Singapore 639798 (SG) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)