| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an acrylic synthetic fiber improved in blue color-discharge dyeing property, in which blue color discharge dyeing is difficult, without lowering of touch feeling which is caused by fiber shrinkage and hardening. Ž<P>SOLUTION: A method for producing an acrylic dyed fiber includes dyeing an acrylic synthetic fiber containing a mixed polymer composition obtained by mixing 70-99.9 wt.% polymer (A) containing 40-80 wt.% acrylonitrile, 20-60 wt.% halogen-containing monomer which is copolymerizable with acrylonitrile, and 0-5 wt.% sulfonic acid group-containing monomer with (B) 0.1-30 wt.% polymer containing 5-70 wt.% acrylonitrile, 20-94 wt.% another copolymerizable monomer, and 1-40 wt.% sulfonic acid group-containing monomer, wherein total amount of the polymer (A) and the polymer (B) is 100 pts.wt., with a cationic activating agent when dyeing the fiber with a cationic dye for discharge dyeing and then carrying out discharge dyeing treatment of the fiber with a printing paste for discharge dyeing. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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