(19)

(11)

EP 0 140 912 A1

(12)

(43) Date of publication: 15.05.1985 Bulletin 1985/20 (21) Application number: 84901207.0 (22) Date of filing: 16.03.1984

(51) International Patent Classification (IPC):  A61L 15/ 28( . ) (86) International application number: PCT/GB1984/000084 (87) International publication number: WO 1984/003705 (27.09.1984 Gazette 1984/23)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 17.03.1983 GB 19830007422 (71) Applicant: COURTAULDS PLC London W1A 2BB (GB)	(72) Inventor: ROSE, Leslie Lancashire LA5 9QZ (GB) (74) Representative: Hale, Stephen Geoffrey, et al  J.Y. & G.W. Johnson Furnival House 14/18 High Holborn London WC1V 6DE London WC1V 6DE (GB)