(19)

(11)

EP 0 403 624 A1

(12)

(43) Date of publication: 27.12.1990 Bulletin 1990/52 (21) Application number: 90900593.0 (22) Date of filing: 30.11.1989

(51) International Patent Classification (IPC):  C10L 1/ 234( . ) C10L 1/ 22( . ) (86) International application number: PCT/US1989/005411 (87) International publication number: WO 1990/006982 (28.06.1990 Gazette 1990/15)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL SE (30) Priority: 21.12.1988 US 19880287818 (71) Applicant: The Lubrizol Corporation Wickliffe, Ohio 44092 (US)	(72) Inventor: NAEGELY, Paul, C. Concord Township, OH 44060 (US) (74) Representative: VOSSIUS & PARTNER  Postfach 86 07 67 D-81634 München D-81634 München (DE)