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    • 10. 发明授权
    • Method for preparing nylon 6 copolymer containing sulfonate comonomers
    • 制备含有磺酸共聚单体的尼龙6共聚物的方法
    • US06812324B2
    • 2004-11-02
    • US10325857
    • 2002-12-23
    • Tun-Fun WayCheng YehLien-Tai ChenChia-Hung Chen
    • Tun-Fun WayCheng YehLien-Tai ChenChia-Hung Chen
    • C08G6928
    • C08G69/265
    • A method for preparing nylon 6 copolymer containing 5-sulfoisophthalate salts comonomer. The method includes the steps of reacting 5-sulfoisophthalate salts ester with aliphatic diamine in a molar ratio of 2˜20 at 160˜200° C., followed by completely removing the unreacted aliphatic diamine, to obtain the intermediate compound with terminal amine, 5-sulfobenzenediamide compound (formula III). Next, caprolactam and aliphatic diacid (formula IV) are reacted at 200˜260° C. to form an oligomer with a low molecular weight. 5-Sulfobenzenediamide (formula III) and catalyst are then added into the oligomer obtained in previous step to cause a polymerization reaction at 200˜280° C. to obtain nylon 6 copolymer containing 5-sulfoisophthalate salt comonomer. The molar ratio of E/C is 0.005˜0.150 and the molar ratio of D/E is 1.05-1.00. Compounds present in the water extract are greatly reduced.
    • 一种制备含5-磺基间苯二甲酸盐共聚单体的尼龙6共聚物的方法。 该方法包括在160〜200℃下使5-磺基间苯二甲酸盐酯与摩尔比为2〜20的脂肪族二胺反应,然后将未反应的脂肪族二胺完全除去,得到末端胺的中间体化合物5 - 磺基二苯胺二胺化合物(式III)。 接着,将己内酰胺和脂肪族二酸(式Ⅳ)在200〜260℃反应,形成低分子量低聚物。 然后将5-磺基苯二甲酰胺(式III)和催化剂加入到前一步骤中获得的低聚物中,以在200〜280℃进行聚合反应,得到含有5-磺基间苯二甲酸盐共聚单体的尼龙6共聚物。 E / C摩尔比为0.005〜0.150,D / E摩尔比为1.05〜1.00。 存在于水提取物中的化合物大大降低。