(19)

(11)

EP 0 942 941 A1

(12)

(43) Date of publication: 22.09.1999 Bulletin 1999/38 (21) Application number: 97947177.0 (22) Date of filing: 04.12.1997

(51) International Patent Classification (IPC):  C08G 18/ 67( . ) C09J 175/ 12( . ) C08G 18/ 83( . ) (86) International application number: PCT/GB1997/003340 (87) International publication number: WO 1998/024826 (11.06.1998 Gazette 1998/23)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 06.12.1996 GB 19960025422 (71) Applicant: Smith & Nephew plc London WC2R 3BP (GB)	(72) Inventors: WEST, Peter, John York YO32 9QN (GB) ANSELL, Christopher North Yorkshire YO61 3NR (GB) (74) Representative: Draggett, Peter Thornton  Group Patents & Trade Marks Dept., Smith & Nephew Group Research Centre, York Science Park Heslington, York Y010 5DF Heslington, York Y010 5DF (GB)