Thermoplastic polyurethanes
    2.
    发明授权
    Thermoplastic polyurethanes 失效
    热塑性聚氨酯

    公开(公告)号:US08138299B2

    公开(公告)日:2012-03-20

    申请号:US11912403

    申请日:2006-04-25

    IPC分类号: C08G18/00

    摘要: Thermoplastic polyurethanes which have a hardness of from 50 Shore A to 80 Shore A and are based on (b) polyester diols, wherein a polyester diol (b1) based on butane-1,4-diol and at least one further diol having at least 5 carbon atoms and a polyester diol (b2) based on butane-1,4-diol and at least one further diol having two or three carbon atoms are present as (b) polyester diols.

    摘要翻译: 具有50肖氏A至80肖氏A的硬度的热塑性聚氨酯,其基于(b)聚酯二醇,其中基于丁烷-1,4-二醇的至少一种至少一种另外的二醇的聚酯二醇(b1) 存在作为(b)聚酯二醇的基于丁烷-1,4-二醇和至少一种具有2或3个碳原子的其它二醇的聚酯二醇(b2)和(b2)聚碳酸酯。

    Method for the production of prepolymers containing isocyanate groups
    3.
    发明申请
    Method for the production of prepolymers containing isocyanate groups 审中-公开
    制备含异氰酸酯基团的预聚物的方法

    公开(公告)号:US20070060731A1

    公开(公告)日:2007-03-15

    申请号:US10577723

    申请日:2004-10-30

    IPC分类号: C08G18/00

    摘要: The invention relates to a process for preparing prepolymers containing isocyanate groups by reacting a) diisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of c) catalysts, and subsequently separating off the excess monomeric diisocyanates, wherein the diisocyanates a) used are unsymmetrical diisocyanates and the catalysts c) used are organometallic catalysts and these organometallic catalysts are removed, blocked or deactivated before the monomeric diisocyanates are separated off.

    摘要翻译: 本发明涉及通过使a)二异氰酸酯与b)在c)催化剂存在下具有至少两个对异氰酸酯基团具有反应性的氢原子的化合物反应制备含异氰酸酯基团的预聚物的方法,随后分离出过量的单体二异氰酸酯, 其中使用的二异氰酸酯a)是不对称二异氰酸酯,并且所用催化剂c)是有机金属催化剂,并且在分离单体二异氰酸酯之前,这些有机金属催化剂被除去,封闭或去活化。