| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a white anti-pilling acrylic fiber which has excellent whiteness, feeling and anti-pilling property, provides a fiber product having good quality and performance, and substantially does not harm productivity of fiber production; and a method for producing the same.SOLUTION: Provided is a white anti-pilling acrylic fiber comprising an acrylonitrile copolymer containing 91 to 95 mass% of acrylonitrile, 3 to 8 mass% of an ethylenic vinyl monomer having copolymerizability with the acrylonitrile, and 1 to 6 mass% of a sulfonic acid-containing vinyl monomer. The fiber has a color such that a b value in the Hunter color system is +1.5 to +4.7, single fiber fineness of 0.3 to 1.3 dtex, tensile strength of 2.0 cN/dtex or more, knot strength of 1.3 to 2.2 cN/dtex, knot elongation of 10 to 20%, and an anti-pilling property of Class 3.5 or more. Also provided is a method for producing the same.</p> |
