High molecular weight (co)polyamide from diamino-alcohol
    3.
    发明授权
    High molecular weight (co)polyamide from diamino-alcohol 失效
    来自二氨基醇的高分子量(共)聚酰胺

    公开(公告)号:US5068311A

    公开(公告)日:1991-11-26

    申请号:US538780

    申请日:1990-06-15

    摘要: The invention relates to high molecular weight thermoplastically deformable branched aliphatic polyamides prepared by polycondensation of lactams and/or polyamide-forming diamine/dicarboxylic acid reaction mixtures and/or amino acids in the presence of small amounts of specific diamino-alcohols and approximately equivalent amounts of polycarboxylic acids (preferably dicarboxylic acids), and to a process for their preparation, which is distinguished by considerably shortened polycondensation times, without crosslinked products being formed. If appropriate, the process additionally utilizes a solid phase after-condensation, in which rapid further condensation to products which are indeed branched but are soluble in m-cresol and have an increased melt viscosity takes place.

    摘要翻译: 本发明涉及通过在少量特定二氨基醇存在下内酰胺和/或形成聚酰胺的二胺/二羧酸反应混合物和/或氨基酸进行缩聚而制备的高分子量热塑性可变支化脂族聚酰胺和大约等量的 多元羧酸(优选二羧酸),以及它们的制备方法,其特征在于显着缩短缩聚时间,没有形成交联产物。 如果合适,该方法另外使用固相缩合后,其中快速进一步冷凝到确实是支化但可溶于间甲酚并且具有增加的熔体粘度的产物。