| 摘要 |
PROBLEM TO BE SOLVED: To provide a crosslinked acrylate-based fiber that has a high brightness and can maintain brightness even after post-processing such as dyeing and bleaching since brightness and color fastness of crosslinked acrylate-based fiber are conventionally improved, however, a rise in manufacturing cost is inevitable, and the present condition is that there is still room of improvement also in characteristics. SOLUTION: The high-brightness crosslinked acrylate-based fiber having color fastness is obtained by treating an acrylonitrile-based fiber composed of acrylonitrile-based copolymer having a copolymerization composition of vinyl ester compound of 1-20 wt.% with an aqueous solution that contains hydrated hydrazine and an acidic compound and is adjusted to pH 13.5-14 with an alkali compound and then subjecting the fiber to an acid treatment A. COPYRIGHT: (C)2010,JPO&INPIT |
