(19)

(11)

EP 0 820 485 A1

(12)

(43) Date of publication: 28.01.1998 Bulletin 1998/05 (21) Application number: 96911725.0 (22) Date of filing: 10.04.1996

(51) International Patent Classification (IPC):  C08L 23/ 04( . ) C08L 23/ 10( . ) (86) International application number: PCT/US1996/005039 (87) International publication number: WO 1996/032441 (17.10.1996 Gazette 1996/46)

(84) Designated Contracting States: BE DE FR (30) Priority: 13.04.1995 US 19950421655 (71) Applicant: EXXON CHEMICAL PATENTS INC. Baytown, TX 77520-5200 (US)	(72) Inventor: MICHIELS, Dirk, Jozef Houston, TX 77062 (US) (74) Representative: Dew, Melvyn John, et al  Exxon Chemical Europe Inc. P.O.Box 105 1830 Machelen 1830 Machelen (BE)