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(11)

EP 4 798 664 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24794151.1 (22) Date of filing: 24.10.2024

(51) International Patent Classification (IPC):  C09G 1/02(2006.01) H01L 21/321(2006.01) C09K 3/14(2006.01) H01L 21/3105(2006.01) (52) Cooperative Patent Classification (CPC): C09G 1/02; C09K 3/1463; C09K 3/1445; H10P 95/062; H10P 52/403 (86) International application number: PCT/EP2024/080015 (87) International publication number: WO 2025/088005 (01.05.2025 Gazette 2025/18)

(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: GE KH MA MD TN (30) Priority: 26.10.2023 EP 23206201 (71) Applicant: BASF SE 67056 Ludwigshafen am Rhein (DE)	(72) Inventors: WEI, Te Yu TAOYUAN CITY, 32853 (TW) YEH, Shih Chieh TAOYUAN CITY, 32853 (TW) TSAI, Tsung Yu TAOYUAN CITY, 32853 (TW) LAUTER, Michael 67056 Ludwigshafen (DE) (74) Representative: Eisenführ Speiser  Patentanwälte Rechtsanwälte PartGmbB Am Kaffee-Quartier 3 28217 Bremen 28217 Bremen (DE)