(19)

(11)

EP 0 521 079 A1

(12)

(43) Date of publication: 07.01.1993 Bulletin 1993/01 (21) Application number: 91906870.0 (22) Date of filing: 21.03.1991

(51) International Patent Classification (IPC):  C08L 23/ 08( . ) C09J 123/ 08( . ) C08L 101/ 00( . ) (86) International application number: PCT/EP1991/000576 (87) International publication number: WO 1991/014750 (03.10.1991 Gazette 1991/23)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 23.03.1990 GB 19900006548 (71) Applicant: EXXON CHEMICAL PATENTS INC. Florham Park, NJ 09132 (US)	(72) Inventor: FAISSAT, Michel, Louis B-1410 Waterloo (BE) (74) Representative: Veldhuizen, Albert Dirk Willem  Exxon Chemical Limited European Patents and Licences Exxon Chemical Technology Centre P.O. Box 1 Abingdon Oxfordshire OX13 6BB Abingdon Oxfordshire OX13 6BB (GB)