CELLULOSE FIBRES WITH IMPROVED ELONGATION AT BREAK, AND METHODS FOR PRODUCING SAME

摘要

PCT No. PCT/EP96/03444 Sec. 371 Date Feb. 9, 1998 Sec. 102(e) Date Feb. 9, 1998 PCT Filed Aug. 5, 1996 PCT Pub. No. WO97/06294 PCT Pub. Date Feb. 20, 1997The present invention provides a fiber made of cellulose formate which exhibits high tenacity and modulus properties, combined with improved values of elongation at break and of energy at break. The elongation at break, in particular, is greater than 6%. The invention also provides a method of producing the fiber by spinning a liquid crystal solution of cellulose formate according to the so-called dry-jet-wet spinning method, the coagulation stage and the neutral washing stage which follow both being carried out in acetone.