Polyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates
having low oligomeric cyclic ether content
    2.
    发明授权
    Polyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates having low oligomeric cyclic ether content 失效
    用四氢呋喃 - 环氧烷聚合物制备的聚氨酯具有低的低聚环醚含量

    公开(公告)号:US4224432A

    公开(公告)日:1980-09-23

    申请号:US966602

    申请日:1978-12-11

    IPC分类号: C08G18/48

    CPC分类号: C08G18/4854

    摘要: The resistance to degradation on exposure to high temperatures, water and organic liquids of a polyurethane prepared by reacting a tetrahydrofuran/alkylene oxide polymerizate, an organic polyisocyanate and a chain extender is significantly improved by using a tetrahydrofuran/alkylene oxide polymerizate which contains no more than about 3%, by weight, of oligomeric cyclic ethers.

    摘要翻译: 通过使四氢呋喃/烯化氧聚合物,有机多异氰酸酯和扩链剂反应制得的聚氨酯制备的聚氨酯暴露于高温下的水分和有机液体的耐受性通过使用四氢呋喃/烯化氧聚合物,其不超过 约3重量%的低聚环醚。

    Polymeric carbonate diols of copolyether glycols and polyurethanes
prepared therefrom
    4.
    发明授权
    Polymeric carbonate diols of copolyether glycols and polyurethanes prepared therefrom 失效
    共聚醚二醇的聚碳酸酯二醇和由其制备的聚氨酯

    公开(公告)号:US4476293A

    公开(公告)日:1984-10-09

    申请号:US460569

    申请日:1983-01-24

    申请人: Ivan M. Robinson

    发明人: Ivan M. Robinson

    IPC分类号: C08G18/44 C08G18/48

    CPC分类号: C08G18/44

    摘要: Polymeric carbonate diols are prepared by coupling segments of copolyether glycols with a dialkyl carbonate, with a cyclic carbonate, or with phosgene.The carbonate diols are useful in preparing polyurethanes.

    摘要翻译: 通过将共聚醚二醇与碳酸二烷基酯,环状碳酸酯或光气偶联来制备聚碳酸酯二醇。 碳酸二酯可用于制备聚氨酯。

    Sulfur-modified copolyether glycols, a method for preparing them, and
polyurethanes prepared therefrom
    5.
    发明授权
    Sulfur-modified copolyether glycols, a method for preparing them, and polyurethanes prepared therefrom 失效
    硫改性共聚醚二醇,其制备方法和由其制备的聚氨酯

    公开(公告)号:US4374970A

    公开(公告)日:1983-02-22

    申请号:US281202

    申请日:1981-07-07

    申请人: Ivan M. Robinson

    发明人: Ivan M. Robinson

    摘要: Copolyether glycols are modified so that they contain 1-25%, by weight of .beta.,.beta.'-dihydroxyalkyl sulfide moieties.These modified copolyether glycols have enhanced resistance to degradation by heat and oxygen.The invention also relates to a method of making the modified copolyether glycols, to their use as stabilizers against the degradation of the polyether chains, and to polyurethanes made with them.

    摘要翻译: 共聚醚二醇被修饰,使得它们含有1-25重量%的β,β'-二羟烷基硫醚部分。 这些改性的共聚醚二醇具有增强的耐受热和氧降解的能力。 本发明还涉及制备改性共聚醚二醇的方法,其用作防止聚醚链降解的稳定剂,以及用它们制备的聚氨酯。

    Sulfur-modified polytetramethylene ether glycols, a method for preparing
them, and polyurethanes prepared therefrom
    6.
    发明授权
    Sulfur-modified polytetramethylene ether glycols, a method for preparing them, and polyurethanes prepared therefrom 失效
    硫改性聚四亚甲基醚二醇,其制备方法和由其制备的聚氨酯

    公开(公告)号:US4371687A

    公开(公告)日:1983-02-01

    申请号:US281198

    申请日:1981-07-07

    申请人: Ivan M. Robinson

    发明人: Ivan M. Robinson

    IPC分类号: C08G18/50 C08G18/52 C09K3/00

    CPC分类号: C08G18/52 C08G18/5072

    摘要: Polytetramethylene ether glycol is modified so that it contains 1-25%, by weight of .beta.,.beta.'-dihydroxyalkyl sulfide moieties.These modified polytetramethylene ether glycols have enhanced resistance to degradation by heat and oxygen.The invention also relates to a method of making the modified PTMEG's, to their use as stabilizers against the degradation of the polyether chain, and to polyurethanes made with them.

    摘要翻译: 改性聚四亚甲基醚二醇,使其含有1-25%(重量)的β,β'-二羟烷基硫醚部分。 这些改性的聚四亚甲基醚二醇具有增强的耐受热和氧降解的能力。 本发明还涉及一种制备改性PTMEG作为防止聚醚链降解的稳定剂以及用它们制备的聚氨酯的方法。