(19)

(11)

EP 1 390 455 A2

(12)

(88) Date of publication A3: 27.11.2003 (43) Date of publication: 25.02.2004 Bulletin 2004/09 (21) Application number: 02759065.2 (22) Date of filing: 13.02.2002

(51) International Patent Classification (IPC)7: C10L 1/22, C10L 10/00 (86) International application number: PCT/US2002/004167 (87) International publication number: WO 2002/102942 (27.12.2002 Gazette 2002/52)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 14.02.2001 US 268733 P (71) Applicant: THE LUBRIZOL CORPORATION Wickliffe,Ohio 44092-2298 (US)	(72) Inventors: BARBOUR, Robert H.The Old Coach House Ashbourne, Derbyshire DE6 1PW (GB) DUNCAN, David A.The Holt Derbyshire DE6 3AW (GB) MORETON, David J."Chevin Brae"Off Chevin Road Derbyshire DE56 0QH (GB) (74) Representative: Crisp, David Norman et al D. YOUNG & CO.21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)