| 摘要 |
PCT No. PCT/EP93/01586 Sec. 371 Date Dec. 21, 1994 Sec. 102(e) Date Dec. 21, 1994 PCT Filed Jun. 21, 1993 PCT Pub. No. WO94/00623 PCT Pub. Date Jan. 6, 1994The invention relates to polyketone yarns of which the maximum tangential modulus at an elongation of more than 0.2% is at least 10 N/tex which display both high strength and, if so desired, a high elongation at break. The quality number, which is measured on a single filament out of a bundle of at least about 30 filaments spun simultaneously through one spinneret and given as sigma . epsilon , is higher than 85 mN/tex, preferably higher than 100 mN/tex. The quality number of a yarn spun through one spinneret of one or more holes is higher than 110 mN/tex, preferably higher than 120 mN/tex. The yarns are manufactured by extruding a solution of a linear polymer of alternating ethylene and carbon monoxide units in a resorcinol-containing solvent, after which the solvent is removed with the aid of methanol as coagulant. |
