| 摘要 |
PURPOSE: Provided is a method of manufacturing high transparency polyimide fiber which involves excellent transparency, color development and endurance, and is used for lingerie, stocking and sportswear with functional and aesthetic properties. CONSTITUTION: The method of manufacturing high transparency polyimide fiber comprises the steps of: condensation polymerizing 100 wt.% of caprolactam, 0.1-5.0 wt.% of a compound of dicarboxylic acid and diamine, 0.1-0.5 wt.% of aliphatic bisamide compounds expressed by formulas 1 and 2, and 0.5-10 wt.% of a compound selected from the group consisting of polyphosphate, polysulphonate, polycarboxylate based on the bisamide compound to make a polyamide chip; and extracting, drying and melt spinning the polyamide chip. In the formula 1, R1 is linear, branched or cyclic alkylene group with the carbon number of 1-10, and R2 and R3 are linear, branched or cyclic alkyl group with the carbon number of 10-20. In the formula 2, R1 is linear, branched or cyclic alkylene group with the carbon number of 0-10 or aromatic group with the carbon number of 6-12, and R2 and R3 are linear, branched or cyclic alkyl group with the carbon number of 10-20.
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