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(11)

EP 2 235 147 A1

(12)

(43) Date of publication: 06.10.2010 Bulletin 2010/40 (21) Application number: 08876491.5 (22) Date of filing: 05.12.2008

(51) International Patent Classification (IPC):  C10M 129/38(2006.01) C10M 133/08(2006.01) C10M 163/00(2006.01) C10M 129/76(2006.01) C10M 133/16(2006.01) (86) International application number: PCT/US2008/085617 (87) International publication number: WO 2010/016856 (11.02.2010 Gazette 2010/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 12.12.2007 US 13043 P (71) Applicant: The Lubrizol Corporation Wickliffe, Ohio 44092-2298 (US)	(72) Inventors: COOK, Stephen J. Derby DE56 1QN (GB) MAYHEW, Alexandra Derby DE56 1QN (GB) (74) Representative: Bradley, Josephine Mary  D Young & Co LLP 120 Holborn London EC1N 2DY 120 Holborn London EC1N 2DY (GB)