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    • 2. 发明授权
    • Aryl amine terminated polysulfide polymers, related compounds and
processes for their preparation
    • 芳胺封端的多硫化物聚合物,相关化合物及其制备方法
    • US4376193A
    • 1983-03-08
    • US114438
    • 1980-01-22
    • Eugene R. Bertozzi
    • Eugene R. Bertozzi
    • C08G18/64C08G75/14C08G18/38
    • C08G75/14C08G18/6453
    • Fully and partially aryl amine terminated polysulfide polymers and processes for their preparation and use are disclosed. The fully aryl amine terminated products are curable with isocyanates to high molecular weight polymers and are thus useful in molding and casting as well as in sealants. The partially aryl amine terminated polymers may be further reacted with polyisocyanates to form thiol terminated polysulfide polymers containing urea chain segments. These compounds are curable in the fashion of standard polysulfide polymers to form firmer polymers. The partially aryl amine terminated polymers may be also chain extended with isocyanate terminated urethane prepolymers. These block copolymers may be cured by standard SH terminated polysulfide polymer cure methods to prepare sealants of exceptional resiliency and weather resistance.
    • 公开了全部和部分芳基胺封端的多硫化物聚合物及其制备和使用方法。 完全芳基胺封端的产物可用异氰酸酯固化成高分子量聚合物,因此可用于模塑和铸造以及密封剂。 部分芳基胺封端的聚合物可以进一步与多异氰酸酯反应以形成含有尿素链段的硫醇封端的聚硫化物聚合物。 这些化合物可以标准多硫化物聚合物的方式固化,形成更坚固的聚合物。 部分芳基胺封端的聚合物也可以用异氰酸酯封端的氨基甲酸酯预聚物链延伸。 这些嵌段共聚物可以通过标准的SH封端的多硫化物聚合物固化方法固化,以制备出异常弹性和耐候性的密封剂。