(19)

(11)

EP 0 662 095 A1

(12)

(43) Date of publication: 12.07.1995 Bulletin 1995/28 (21) Application number: 93922327.0 (22) Date of filing: 23.09.1993

(51) International Patent Classification (IPC):  C08F 4/ 654( . ) C08F 10/ 00( . ) (86) International application number: PCT/US1993/009009 (87) International publication number: WO 1994/007926 (14.04.1994 Gazette 1994/09)

(84) Designated Contracting States: AT BE DE ES FR GB GR IT NL PT SE (30) Priority: 25.09.1992 US 19920950556 (71) Applicant: SHELL OIL COMPANY Houston, Texas 77252-2463 (US)	(72) Inventor: STANLEY, Edward, Wilson Houston, TX 77084 (US) (74) Representative: Ellis-Jones, Patrick George Armine, et al  J.A. KEMP & CO. 14 South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)