Method for functionalising a thermoset, crosslinked isocyanate-based polymeric solid material
    8.
    发明授权
    Method for functionalising a thermoset, crosslinked isocyanate-based polymeric solid material 有权
    功能化热固性交联异氰酸酯基聚合物固体材料的方法

    公开(公告)号:US08901180B2

    公开(公告)日:2014-12-02

    申请号:US13470567

    申请日:2012-05-14

    摘要: The invention relates to a method for functionalizing a thermoset, crosslinked isocyanate-based polymeric solid material which is made of isocyanate and isocyanate reactive components, at least one of which comprises an anchor component which has at least one anchor group. The anchor groups on the solid material are formed by terminal alkene and/or alkyne groups. To functionalize this polymeric solid material it is brought in contact with a solution which contains at least one functional component. This functional component comprises at least one thiol group and is allowed to bind covalently to the polymeric solid material by a free-radical addition reaction between the thiol groups on the functional component and the terminal alkene and/or alkyne anchor groups on the undissolved solid material. An effective functionalization of the polymeric material can thus be achieved notwithstanding the heterogeneous reaction conditions.

    摘要翻译: 本发明涉及用于官能化由异氰酸酯和异氰酸酯反应性组分制成的热固性交联的异氰酸酯基聚合物固体材料的方法,其中至少一种包括具有至少一个锚定基团的锚固组分。 固体材料上的锚定基团由末端烯烃和/或炔烃基团形成。 为了官能化该聚合物固体材料,其与含有至少一种官能组分的溶液接触。 该功能组分包含至少一个硫醇基团,并且通过功能组分上的硫醇基团与未溶解的固体材料上的末端烯烃和/或炔炔基团之间的自由基加成反应,使其与共聚物固体材料共价键合 。 因此,尽管有非均相的反应条件,也可以实现聚合物材料的有效功能化。

    Method of reducing stress relaxation in polymer articles and articles formed thereby
    9.
    发明授权
    Method of reducing stress relaxation in polymer articles and articles formed thereby 有权
    降低由此形成的聚合物制品和制品中的应力松弛的方法

    公开(公告)号:US08716425B2

    公开(公告)日:2014-05-06

    申请号:US11658933

    申请日:2005-07-29

    摘要: A method of improving the mechanical properties of polymers is described. The method involves heat treating the polymer at a temperature below the glass transition temperature in a wet or in a dry environment. Polymer articles capable of moisture uptake in humid environments, as well as polymer articles less susceptible to moisture uptake, have improved mechanical properties, particularly improved stress relaxation behavior and set properties, when treated in accord with the heat treatment method.

    摘要翻译: 描述了改进聚合物的机械性能的方法。 该方法包括在湿或干燥环境中在低于玻璃化转变温度的温度下热处理聚合物。 在潮湿环境中能够吸湿的聚合物制品以及不易吸湿的聚合物制品在根据热处理方法进行处理时具有改进的机械性能,特别是改进的应力松弛性能和凝固性能。