(19)

(11)

EP 0 781 301 A1

(12)

(43) Date of publication: 02.07.1997 Bulletin 1997/27 (21) Application number: 95933087.0 (22) Date of filing: 13.09.1995

(51) International Patent Classification (IPC):  C08F 2/ 34( . ) C08F 10/ 00( . ) C08F 4/ 659( . ) C08F 210/ 16( . ) C08F 4/ 642( . ) C08F 210/ 00( . ) C08F 4/ 6592( . ) (86) International application number: PCT/US1995/011594 (87) International publication number: WO 1996/008521 (21.03.1996 Gazette 1996/13)

(84) Designated Contracting States: BE DE ES FR GB IT NL SE (30) Priority: 14.09.1994 US 19940306055 31.10.1994 US 19940332162 (71) Applicant: EXXON CHEMICAL PATENTS INC. Baytown, TX 77520-2149 (US)	(72) Inventors: POIROT, Eugene, Edmond Baytown, TX 77520 (US) SAGAR, Vispi, Rustom League City, TX 77573 (US) JACKSON, Scott, Kevin Baytown, TX 77520 (US) (74) Representative: Bawden, Peter Charles, et al  EXXON CHEMICAL LIMITED Exxon Chemical Technology Centre PO Box 1 Abingdon Oxfordshire OX13 6BB Abingdon Oxfordshire OX13 6BB (GB)