(19)

(11)

EP 1 268 720 A2

(12)

(88) Date of publication A3: 04.04.2002 (43) Date of publication: 02.01.2003 Bulletin 2003/01 (21) Application number: 01924355.9 (22) Date of filing: 26.03.2001

(51) International Patent Classification (IPC)7: C10M 163/00, C10M 171/00 (86) International application number: PCT/US0109/740 (87) International publication number: WO 0107/4141 (11.10.2001 Gazette 2001/41)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 31.03.2000 US 193913 P (71) Applicant: The Lubrizol Corporation Wickliffe, OH 44092-2298 (US)	(72) Inventors: ABRAHAM, William, D. South Euclid, OH 44121 (US) ROSKI, James, P. Wickliffe, OH 44092 (US) RUTTER, Jerry, L. Mentor, OH 44062-2149 (US) TIPTON, Craig, D. Perry, OH 44081 (US) GOBER, Victor, A. Euclid, OH 44123 (US) SCHWIND, James, J. Chardon, OH 44024 (US) (74) Representative: Crisp, David Norman et al D. YOUNG & CO.21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)