(19)

(11)

EP 0 863 921 A1

(12)

(43) Date of publication: 16.09.1998 Bulletin 1998/38 (21) Application number: 96939526.0 (22) Date of filing: 01.11.1996

(51) International Patent Classification (IPC):  C08F 8/ 28( . ) C08F 216/ 06( . ) C08F 16/ 38( . ) (86) International application number: PCT/US1996/017527 (87) International publication number: WO 1997/019961 (05.06.1997 Gazette 1997/24)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 29.11.1995 US 19950007703P (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventor: HAYES, Richard, Allen Wilmington, DE 19803 (US) (74) Representative: Winter, Brandl & Partner  Patent- und Rechtsanwaltskanzlei Alois-Steinecker-Strasse 22 85354 Freising 85354 Freising (DE)