| 摘要 |
PURPOSE: A method for a nylon polymer is provided to control the content of the terminal amine groups, thereby improving the dye-affinity, the color fastness and the spinnability in the melt spinning of nylon micro filament yarn. CONSTITUTION: The method comprises the steps of mixing caprolactam, 0.2-0.7 mol% of a polyvalent amine compound containing -NH2 group at the terminal and -NH- group in the molecular chain and 0.1-0.5 mol% of a dicarboxylic acid; and polymerizing the mixture to obtain a nylon polymer. Preferably the polyvalent amine is selected from the group consisting of diethylene triamine and triethylene tetramine; and the dicarboxylic acid is selected from the group consisting of terephthalic acid and adipic acid. |
