| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a low-shrinkage meta-type wholly aromatic polyamide fiber having a low heat shrinkage percentage at a high temperature. Ž<P>SOLUTION: The halogen atom-containing phosphoric acid ester-containing low-shrinkage meta-type wholly aromatic polyamide fiber having a maximum heat shrinkage percentage of ≤4.0%, a tensile strength of ≥2.8 cN/dtex and a limiting oxygen index (LOI value) of ≥28 is obtained by mixing a wholly aromatic polyamide with a specific amount of a halogen atom-containing phosphoric acid ester, drawing an obtained undrawn yarn in a specific ratio in wet-heat at one stage and performing a relaxing heat treatment in a specific ratio. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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