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。

    Polyether carbonate diols and polyurethanes prepared therefrom
    5.
    发明授权
    Polyether carbonate diols and polyurethanes prepared therefrom 失效
    由其制备的聚醚碳酸酯二醇和聚氨酯

    公开(公告)号:US4463141A

    公开(公告)日:1984-07-31

    申请号:US460570

    申请日:1983-01-24

    申请人: Ivan M. Robinson

    发明人: Ivan M. Robinson

    IPC分类号: C08G18/44 C08L75/08 C08G71/04

    CPC分类号: C08G18/44

    摘要: Polyether carbonate diols are prepared by coupling segments of a poly(tetramethylene ether) glycol with a dialkyl carbonate, a cyclic carbonate or with phosgene. The carbonate diols are useful in preparing polyurethanes.

    摘要翻译: 聚醚碳酸酯二醇通过将聚(四亚甲基醚)二醇与碳酸二烷基酯,环状碳酸酯或光气的链段连接来制备。 碳酸二酯可用于制备聚氨酯。

    Sulfur-modified polypropylene ether glycols, a method for preparing
them, and polyurethanes prepared therefrom
    6.
    发明授权
    Sulfur-modified polypropylene ether glycols, a method for preparing them, and polyurethanes prepared therefrom 失效
    硫改性聚丙烯醚二醇,其制备方法和由其制备的聚氨酯

    公开(公告)号:US4373084A

    公开(公告)日:1983-02-08

    申请号:US281199

    申请日:1981-07-07

    申请人: Ivan M. Robinson

    发明人: Ivan M. Robinson

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

    摘要翻译: 改性聚丙烯醚二醇,使其含有1-25%(重量)的β,β'-二羟基烷基硫醚部分。 这些改性的聚丙烯醚二醇具有增强的耐受热和氧降解的能力。 本发明还涉及一种使改性PPG作为防止聚醚链降解的稳定剂的用途以及由它们制备的聚氨酯的方法。

    Polymer composition
    7.
    发明授权
    Polymer composition 失效
    聚合物组成

    公开(公告)号:US4371680A

    公开(公告)日:1983-02-01

    申请号:US708718

    申请日:1968-01-22

    CPC分类号: C08F10/06

    摘要: A process is disclosed for the polymerization and interpolymerization of propylene, either alone or in admixture with ethylene, to produce polymers and copolymers of propylene. The catalyst employed is a coordination complex comprising at least some divalent titanium, or other transition metal element in lower valent state. The catalysts are prepared by mixing a higher valent titanium (or other transition metal) halide or titanate ester with a reducing agent, which can be any organometallic compound, such as a metal alkyl or aryl, including Grignard reagents, a metal hydride, or a metal including zinc and metals above zinc in the electromotive series. Hydrocarbon media can be employed advantageously for the preparation of the cataysts and for the polymerizations. The polymeric products (both homopolymers and copolymers) are linear and of high molecular weight and are useful as plastics, fibers and elastomers and for production of blends with polyethylene.

    摘要翻译: 公开了用于单独或与乙烯混合的丙烯的聚合和共聚的方法,以产生丙烯的聚合物和共聚物。 所使用的催化剂是包含至少一些二价钛或其它低价态的过渡金属元素的配位络合物。 通过将较高价的钛(或其它过渡金属)卤化物或钛酸酯与还原剂混合制备催化剂,还原剂可以是任何有机金属化合物,例如金属烷基或芳基,包括格氏试剂,金属氢化物或 金属包括锌和金属以上锌在电动系列。 烃介质可以有利地用于制备催化剂和聚合。 聚合产物(均聚物和共聚物均为线性的和高分子量的),可用作塑料,纤维和弹性体,并用于生产与聚乙烯的共混物。

    Polymeric carbonate diols of copolyether glycols and polyurethanes
prepared therefrom
    9.
    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
    10.
    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。