(19)

(11)

EP 1 425 366 A2

(12)

(88) Date of publication A3: 14.08.2003 (43) Date of publication: 09.06.2004 Bulletin 2004/24 (21) Application number: 02797796.6 (22) Date of filing: 29.08.2002

(51) International Patent Classification (IPC)7: C10L 1/18 (86) International application number: PCT/US2002/027673 (87) International publication number: WO 2003/020852 (13.03.2003 Gazette 2003/11)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 05.09.2001 US 317205 P (71) Applicant: THE LUBRIZOL CORPORATION Wickliffe,Ohio 44092-2298 (US)	(72) Inventors: BAKER, Mark R. Lyndhurst, OH 44124 (US) DALY, Daniel T. Solon, OH 44139 (US) (74) Representative: Mallalieu, Catherine Louise et al D. Young & Co.,21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)