(19)

(11)

EP 0 377 014 A1

(12)

(43) Date of publication: 11.07.1990 Bulletin 1990/28 (21) Application number: 89906314.0 (22) Date of filing: 19.05.1989

(51) International Patent Classification (IPC):  B04C 5/ 12( . ) B04C 5/ 28( . ) B04C 5/ 14( . ) (86) International application number: PCT/AU1989/000225 (87) International publication number: WO 1989/011339 (30.11.1989 Gazette 1989/28)

(84) Designated Contracting States: BE DE FR GB IT NL SE (30) Priority: 20.05.1988 AU 19880008350 (71) Applicant: CONOCO SPECIALTY PRODUCTS INC. Houston, TX 77252 (US)	(72) Inventor: KALNINS, Charles, Michael Malvern, VIC 3144 (AU) (74) Representative: Geering, Keith Edwin, et al  REDDIE & GROSE 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)