(19)

(11)

EP 3 253 851 A1

(12)

(43) Date of publication: 13.12.2017 Bulletin 2017/50 (21) Application number: 15813819.8 (22) Date of filing: 17.12.2015

(51) International Patent Classification (IPC):  C10L 1/19(2006.01) C10M 129/76(2006.01) C10N 30/06(2006.01) C10L 10/08(2006.01) C10M 129/78(2006.01) C10N 40/25(2006.01) (86) International application number: PCT/EP2015/080229 (87) International publication number: WO 2016/124293 (11.08.2016 Gazette 2016/32)

(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: MA MD (30) Priority: 06.02.2015 GB 201502026 (71) Applicant: Castrol Limited Reading RG8 7QR (GB)	(72) Inventors: GUIDUCCI, Aldo Reading Berkshire RG8 7QR (GB) LAMB, Gordon Shanghai 201206 (CN) WEST, Kevin Reading Berkshire RG8 7QR (GB) (74) Representative: BP Global Patents  BP International Limited Global Patents & Technology Law Chertsey Road Middlesex Sunbury-on-Thames TW16 7LN Sunbury-on-Thames TW16 7LN (GB)