(19)

(11)

EP 4 824 007 A2

(12)

(88) Date of publication A3: 14.08.2025 (43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24828352.5 (22) Date of filing: 11.12.2024

(51) International Patent Classification (IPC):  C04B 28/14(2006.01) (52) Cooperative Patent Classification (CPC): C04B 28/14; C04B 2201/20   C-Sets: C04B 28/14, C04B 14/24, C04B 14/28, C04B 14/104, C04B 14/185, C04B 14/204, C04B 20/008, C04B 24/383, C04B 2103/20, C04B 2103/30, C04B 2103/0085, C04B 2103/302, C04B 2103/304; (86) International application number: PCT/EP2024/085631 (87) International publication number: WO 2025/125303 (19.06.2025 Gazette 2025/25)

(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 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: 14.12.2023 CN 202311724366 (71) Applicant: Saint-Gobain Placo 92400 Courbevoie (FR)	(72) Inventor: WANG, Jin Shanghai (CN) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)