(19)

(11)

EP 0 596 048 A1

(12)

(43) Date of publication: 11.05.1994 Bulletin 1994/19 (21) Application number: 92922735.0 (22) Date of filing: 13.10.1992

(51) International Patent Classification (IPC):  C10M 163/ 00( . ) C10N 10/ 02( . ) C10N 20/ 04( . ) C10N 30/ 10( . ) C10N 10/ 00( . ) C10N 10/ 04( . ) C10N 30/ 04( . ) C10N 40/ 25( . ) (86) International application number: PCT/US1992/008718 (87) International publication number: WO 1993/023504 (25.11.1993 Gazette 1993/28)

(84) Designated Contracting States: BE CH DE ES FR GB IT LI NL SE (30) Priority: 15.05.1992 US 19920884961 (71) Applicant: THE LUBRIZOL CORPORATION Wickliffe, Ohio 44092-2298 (US)	(72) Inventors: SALOMON, Mary, F. Mayfield Village, OH 44143 (US) DAVIS, Kirk, E. Chester Township, OH 44026 (US) KARN, Jack, L. Richmond Heights, OH 44143 (US) CAHOON, John, M. Mentor, OH 44060 (US) (74) Representative: Mallalieu, Catherine Louise, et al  D. Young & Co., 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)