(19)

(11)

EP 0 526 556 A1

(12)

(43) Date of publication: 10.02.1993 Bulletin 1993/06 (21) Application number: 91908818.0 (22) Date of filing: 26.04.1991

(51) International Patent Classification (IPC):  C08L 27/ 18( . ) H01B 3/ 44( . ) H01B 7/ 02( . ) H01B 17/ 56( . ) C08L 57/ 00( . ) H01B 5/ 16( . ) H01B 7/ 29( . ) H01B 17/ 60( . ) (86) International application number: PCT/GB1991/000661 (87) International publication number: WO 1991/017551 (14.11.1991 Gazette 1991/26)

(84) Designated Contracting States: DE ES FR GB IT SE (30) Priority: 27.04.1990 GB 19900009407 27.04.1990 US 19900515302 (60) Divisional application: 92202891.5 / 0521588 (71) Applicants: W.L. GORE & ASSOCIATES, INC. Newark DE 19714 (US) W.L. GORE & ASSOCIATES (UK) LTD London WC2A 2JP (GB)	(72) Inventors: GELLAN, Andrea Dunfermline KY12 7QP (GB) MORTIMER, William, Patrick, Jr. Conowingo, MD 21918 (US) (74) Representative: Horner, Martin Grenville, et al  Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE Scotland Glasgow G1 3AE Scotland (GB)