(19)

(11)

EP 0 600 055 A1

(12)

(43) Date of publication: 08.06.1994 Bulletin 1994/23 (21) Application number: 93911712.0 (22) Date of filing: 05.05.1993

(51) International Patent Classification (IPC):  C10M 175/ 00( . ) C10N 40/ 25( . ) C10M 175/ 02( . ) (86) International application number: PCT/CA1993/000193 (87) International publication number: WO 1993/023506 (25.11.1993 Gazette 1993/28)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE (30) Priority: 19.05.1992 CA 19922068905 (71) Applicant: MOHAWK OIL CO. LTD. Burnaby, British Columbia V5G 4G2 (CA)	(72) Inventor: WILSON, Terry, A. North Vancouver, British Columbia V7G 1E (CA) (74) Representative: Woodman, Derek  Frank B. Dehn & Co., European Patent Attorneys, Imperial House, 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)