(19)

(11)

EP 0 275 295 A1

(12)

(43) Date of publication: 27.07.1988 Bulletin 1988/30 (21) Application number: 87905075.0 (22) Date of filing: 15.07.1987

(51) International Patent Classification (IPC):  C08G 63/ 78( . ) C08L 67/ 00( . ) C08L 71/ 08( . ) C08L 81/ 00( . ) C08G 65/ 40( . ) C08L 71/ 00( . ) C08L 71/ 12( . ) C08L 81/ 06( . ) (86) International application number: PCT/US1987/001703 (87) International publication number: WO 1988/000605 (28.01.1988 Gazette 1988/03)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 21.07.1986 US 19860887188 (71) Applicant: AMOCO CORPORATION Chicago, IL 60680-0703 (US)	(72) Inventors: MATZNER, Marcus Edison, NJ 08817 (US) PAPUGA, Donald, Mark Ridgefield, CT 06877 (US) (74) Representative: Lewin, John Harvey, et al  Elkington and Fife Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)