(19)

(11)

EP 4 547 798 A1

(12)

(43) Date of publication: 07.05.2025 Bulletin 2025/19 (21) Application number: 23755471.2 (22) Date of filing: 07.08.2023

(51) International Patent Classification (IPC):  C10L 1/19(2006.01) (52) Cooperative Patent Classification (CPC): C10L 1/1905; C10L 2200/0446; C10L 2270/026; C10L 10/06; C10L 10/04 (86) International application number: PCT/GB2023/052088 (87) International publication number: WO 2024/033628 (15.02.2024 Gazette 2024/07)

(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: KH MA MD TN (30) Priority: 08.08.2022 GB 202211547 (71) Applicant: Innospec Limited Ellesmere Port, Cheshire CH65 4EY (GB)	(72) Inventors: ROBERTS, Martin Ellesmere Port Cheshire CH65 4EY (GB) FABER, Alex Ellesmere Port Cheshire CH65 4EY (GB) SWALLOW, Peter Ellesmere Port Cheshire CH65 4EY (GB) (74) Representative: Appleyard Lees IP LLP  15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)