Polyurethane-urea elastomers and their production
    8.
    发明授权
    Polyurethane-urea elastomers and their production 失效
    聚氨酯 - 尿素弹性体及其生产

    公开(公告)号:US4208507A

    公开(公告)日:1980-06-17

    申请号:US922317

    申请日:1978-07-06

    IPC分类号: C08G18/10 C08G18/75 C08G18/32

    CPC分类号: C08G18/75 C08G18/10

    摘要: Polyurethane-urea elastomers with improved temperature characteristics, in particular improved low temperature properties, good mechanical properties over a large temperature range and excellent resistance to hydrolysis, are obtained by reacting(A) a prepolymer, possessing cycloaliphatic NCO groups, which has been prepared from essentially difunctional polyhydroxy compounds and organic diisocyanates possessing at least one NCO group bonded to a cycloaliphatic structure, these reactants being used so as to give a ratio of total hydroxyl: NCO groups of from 1:1.2 to 1:10, with(B) 3,3',5,5'-tetramethyl-4,4'-diamino-diphenylmethane, A and B being reacted in the molar ratio of from 1:0.8 to 1:1.2.

    摘要翻译: 通过使(A)具有环脂族NCO基团的预聚物(其由以下制备)制备的具有改进的温度特性,特别是改进的低温性能,在大温度范围内的良好机械性能和优异的抗水解性的聚氨酯 - 脲弹性体 基本上是双官能多羟基化合物和具有至少一个与脂环族结构键合的NCO基团的有机二异氰酸酯,使用这些反应物,以使总羟基:NCO基团的比例为1:1.2至1:10,与(B)3 ,3',5,5'-四甲基-4,4'-二氨基 - 二苯基甲烷,A和B的摩尔比为1:0.8至1:1.2。

    Hard, rigid, non-elastomeric polyurethane, compositions
    9.
    发明授权
    Hard, rigid, non-elastomeric polyurethane, compositions 失效
    硬质,刚性,非弹性聚氨酯,组合物

    公开(公告)号:US4195149A

    公开(公告)日:1980-03-25

    申请号:US818521

    申请日:1977-07-25

    IPC分类号: C08G18/28 C08G18/30

    CPC分类号: C08G18/283

    摘要: Hard, rigid, non-elastomeric, non-cellular polyurethane compositions manufactured by reacting a liquid hydroxylic polyether having an OH equivalent weight of from 50 to 250, a monofunctional hydroxylic polyether having a molecular weight of from 150 to 10,000 and devoid of further functional groups which react with isocyanates, and an organic polyisocyanate, with or without catalysts, auxiliaries and additives.

    摘要翻译: 通过使OH当量为50至250的液体羟基聚醚与分子量为150至10,000的单官能羟基聚醚反应制得的硬质,刚性,非弹性体,非细胞聚氨酯组合物,并且没有其它官能团 其与异氰酸酯反应,和有机多异氰酸酯,具有或不具有催化剂,助剂和添加剂。