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(11)

EP 4 263 551 A1

(12)

(43) Date of publication: 25.10.2023 Bulletin 2023/43 (21) Application number: 21839461.7 (22) Date of filing: 15.12.2021

(51) International Patent Classification (IPC):  C07D 495/04(2006.01) H01L 51/00(2006.01) C07D 495/22(2006.01) (52) Cooperative Patent Classification (CPC): C07D 495/22; C07D 495/04; Y02E 10/549; H10K 85/215; H10K 85/611; H10K 85/653; H10K 85/655; H10K 85/654; H10K 85/6576; H10K 30/30 (86) International application number: PCT/EP2021/085841 (87) International publication number: WO 2022/129137 (23.06.2022 Gazette 2022/25)

(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 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: 15.12.2020 GB 202019810 (71) Applicant: Sumitomo Chemical Co., Ltd Tokyo, 103-6020 (JP)	(72) Inventors: KAMTEKAR, Kiran Godmanchester Cambridgeshire PE29 2XG (GB) JONES, Sophie Ann Godmanchester Cambridgeshire PE29 2XG (GB) YAACOBI-GROSS, Nir Godmanchester Cambridgeshire PE29 2XG (GB) (74) Representative: Gilani, Anwar et al Venner Shipley LLP Byron House Cambridge Business Park Cowley Road Cambridge CB4 0WZ Cambridge CB4 0WZ (GB)