(19)

(11)

EP 0 604 594 A1

(12)

(43) Date of publication: 06.07.1994 Bulletin 1994/27 (21) Application number: 92923394.0 (22) Date of filing: 09.03.1992

(51) International Patent Classification (IPC):  A23D 9/ 00( . ) C11B 5/ 00( . ) (86) International application number: PCT/US1992/000702 (87) International publication number: WO 1993/017566 (16.09.1993 Gazette 1993/22)

(84) Designated Contracting States: BE DE ES FR GB IT NL SE (71) Applicant: THE LUBRIZOL CORPORATION Wickliffe, Ohio 44092-2298 (US)	(72) Inventors: CARRICK, Virginia Chardon, OH 44024 (US) YODIGE, Richard Mentor, OH 44060 (US) (74) Representative: Mallalieu, Catherine Louise  D. Young & Co., 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)