(19)

(11)

EP 0 821 705 A1

(12)

(43) Date of publication: 04.02.1998 Bulletin 1998/06 (21) Application number: 96914916.0 (22) Date of filing: 11.04.1996

(51) International Patent Classification (IPC):  C08G 18/ 08( . ) C08G 18/ 42( . ) C08G 18/ 32( . ) C08G 18/ 66( . ) (86) International application number: PCT/EP1996/001576 (87) International publication number: WO 1996/033230 (24.10.1996 Gazette 1996/47)

(84) Designated Contracting States: BE DE DK ES FR GB IT NL PT SE (30) Priority: 18.04.1995 EP 19950200967 (71) Applicant: UNICHEMA CHEMIE B.V. 2802 BE Gouda (NL)	(72) Inventors: SCIPIO, Frederik, Julius NL-2871 KW Schoonhoven (NL) VAN DER WOUDEN, Maarten NL-2924 BX Krimpen aan den IJssel (NL) (74) Representative: Graham, John George, et al  ICI Group Intellectual Property P.O. Box 90 Wilton Middlesbrough, Cleveland TS90 8JE Middlesbrough, Cleveland TS90 8JE (GB)