Process to make copolymers having polyamide blocks and polyether blocks
    1.
    发明申请
    Process to make copolymers having polyamide blocks and polyether blocks 审中-公开
    制备具有聚酰胺嵌段和聚醚嵌段的共聚物的方法

    公开(公告)号:US20070106034A1

    公开(公告)日:2007-05-10

    申请号:US11591232

    申请日:2006-11-01

    IPC分类号: C08G69/48

    CPC分类号: C08G69/40 C08G69/44

    摘要: The present invention relates to a process for preparing, by condensation, copolymers having polyamide blocks and polyether blocks in which polyamide blocks having dicarboxylic chain ends are mixed with: a polyether having two OH chain ends (a polyetherdiol), and a polyol having at least 3 OH functions. The copolymers have a higher molecular weight, higher mechanical properties (impact, processing, filmification etc), remain linear or only weakly branched. The multifunctionality of the polyol is only used for kinetic aspects. As regards the process, there is a reduction of cycle time, reduced technical requirements on the catalyst and vacuum system and a reduction of degradation which means a better colour stability. The invention also relates to these copolymers having polyamide blocks and polyether blocks and comprising in its chain the residues of a polyol having at least 3 OH functions.

    摘要翻译: 本发明涉及通过缩合制备具有聚酰胺嵌段和聚醚嵌段的共聚物的方法,其中将具有二羧酸链末端的聚酰胺嵌段与具有两个OH链末端的聚醚(聚醚二醇)和至少具有至少 3 OH功能。 共聚物具有较高的分子量,更高的机械性能(冲击,加工,成膜等),保持线性或仅有弱分支。 多元醇的多功能性仅用于动力学方面。 关于该方法,循环时间减少,催化剂和真空系统的技术要求降低,降解降低,这意味着更好的颜色稳定性。 本发明还涉及具有聚酰胺嵌段和聚醚嵌段的这些共聚物,并且在其链中包含具有至少3个OH官能团的多元醇的残基。