(19)

(11)

EP 0 880 549 A2

(12)

(43) Date of publication: 02.12.1998 Bulletin 1998/49 (21) Application number: 97905946.0 (22) Date of filing: 13.02.1997

(51) International Patent Classification (IPC):  C07F 7/ 18( . ) C08F 4/ 654( . ) C08F 110/ 06( . ) C08F 4/ 64( . ) C08F 10/ 00( . ) (86) International application number: PCT/US1997/002271 (87) International publication number: WO 1997/030096 (21.08.1997 Gazette 1997/36)

(84) Designated Contracting States: AT BE DE ES FR GB IT NL (30) Priority: 13.02.1996 US 19960600838 (71) Applicant: EXXON CHEMICAL PATENTS INC. Baytown, TX 77520-5200 (US)	(72) Inventors: LICCIARDI, Gary, F. Humble, TX 77346 (US) DEBOLT, Lawrence, C. Kingwood, TX 77345 (US) CROWTHER, Donna, Jean Baytown, TX 77521 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 22607 Hamburg 22607 Hamburg (DE)