Stable and storable polyester-polyether co-prepolymers
    2.
    发明授权
    Stable and storable polyester-polyether co-prepolymers 失效
    稳定和可储存的聚酯 - 聚醚共预聚物

    公开(公告)号:US4182898A

    公开(公告)日:1980-01-08

    申请号:US871330

    申请日:1978-01-20

    CPC classification number: C08G18/4018 C08G18/12 Y10S528/906

    Abstract: Polyurethanes having improved properties are obtained from polyester-polyether co-prepolymers. These co-prepolymers are homogeneous, clear liquids of varying viscosity and can be reacted with curing agents to yield clear homogeneous elastomers of various hardness. Cast elastomers prepared from such co-prepolymers have physical properties at least as good as premium polyester urethanes currently available, and have hydrolytic stability and low temperature properties better than such premium polyester urethanes and comparable to premium polyether urethanes, with the cost being comparable to the lower cost of the conventional polyester systems.

    Abstract translation: 具有改进性能的聚氨酯由聚酯 - 聚醚共预聚物获得。 这些共预聚物是具有不同粘度的均匀,透明的液体,并可与固化剂反应,得到各种硬度的透明均匀的弹性体。 由这种共预聚物制备的铸塑弹性体具有至少与目前可获得的优质聚酯聚氨酯一样好的物理性能,并且具有比这些优质聚酯聚氨酯更好的水解稳定性和低温性能,并且与优质聚醚聚氨酯相当,成本可与 降低传统聚酯体系的成本。

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