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(11)

EP 4 770 955 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24702582.8 (22) Date of filing: 18.01.2024

(51) International Patent Classification (IPC):  C01B 32/00(2017.01) C08L 95/00(2006.01) C04B 12/00(2006.01) (52) Cooperative Patent Classification (CPC): C01B 32/00; C04B 18/021; C04B 28/02; C04B 26/02; C04B 26/26; C04B 2111/00663; C04B 2111/28; C04B 2111/00019   C-Sets: C04B 26/26, C04B 14/28, C04B 18/021; C04B 18/021, C04B 18/101; C04B 18/021, C04B 20/0232; C04B 18/021, C04B 14/022; C04B 18/021, C04B 18/068; C04B 28/02, C04B 18/021; C04B 26/02, C04B 18/021; (86) International application number: PCT/GB2024/050138 (87) International publication number: WO 2025/046208 (06.03.2025 Gazette 2025/10)

(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: 31.08.2023 GB 202313293 (71) Applicant: Low Carbon Materials Limited Seaham SR7 9DR (GB)	(72) Inventors: BUSH, Scott Peter Seaham SR7 9DR (GB) BOULDING, Natasha Alice Seaham SR7 9DR (GB) BUCKLEY, Philip Daniel Seaham SR7 9DR (GB) (74) Representative: Potter Clarkson  Chapel Quarter Mount Street Nottingham NG1 6HQ Nottingham NG1 6HQ (GB)