(19)

(11)

EP 0 557 457 A1

(12)

(43) Date of publication: 01.09.1993 Bulletin 1993/35 (21) Application number: 92901995.0 (22) Date of filing: 08.08.1991

(51) International Patent Classification (IPC):  C08F 220/ 12( . ) C08F 222/ 40( . ) (86) International application number: PCT/US1991/005641 (87) International publication number: WO 1993/003076 (18.02.1993 Gazette 1993/05)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (71) Applicants: ICI ACRYLICS, INC. St. Louis, MO 63122 (US) SHEN, Jyi-Sheng Jason San Dimas, CA 91773 (US)	(72) Inventor: SHEN, Jyi-Sheng, Jason San Dimas, CA 91773 (US) (74) Representative: Nevard, Edward John, et al  Intellectual Property Department ICI Materials P.O. Box 90 Wilton Cleveland TS90 8JE Wilton Cleveland TS90 8JE (GB)