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公开(公告)号：US4145525A
公开(公告)日：1979-03-20
申请号：US838810
申请日：1977-10-03
CPC分类号： C08G64/42 , C08G64/0208 , C08G64/34
摘要： Polycarbonates, of the type formed by reacting an aliphatic or cycloaliphatic 1,2-monoepoxide with carbon dioxide and having substantially alternating units of epoxide and carbon dioxide, are improved in thermal stability by reacting the free hydroxyl groups thereon with a hydroxyl reactive phosphorus compound.
摘要翻译： 通过使脂族或脂环族1,2-单环氧化物与二氧化碳反应并具有基本上交替的环氧化物和二氧化碳单元形成的类型的聚碳酸酯通过使其上的游离羟基与羟基反应性磷化合物反应而改善了热稳定性。
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2.发明授权
公开(公告)号：US4066630A
公开(公告)日：1978-01-03
申请号：US757909
申请日：1977-01-10
CPC分类号： C08G64/0208 , C08G63/64 , C08G64/34
摘要： Polycarbonates, of the type formed by reacting an aliphatic or cycloaliphatic 1,2-monoepoxide with carbon dioxide and having substantially alternating units of epoxide and carbon dioxide, are improved in thermal stability by reacting the free hydroxyl groups thereon with a hydroxyl reactive organic compound.
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公开(公告)号：US4104264A
公开(公告)日：1978-08-01
申请号：US794263
申请日：1977-05-05
CPC分类号： C08G64/0216 , C08G64/025 , C08G64/42
摘要： Polycarbonates, of the type formed by reacting an aliphatic or cycloaliphatic 1,2-monoepoxide with carbon dioxide and having substantially alternating units of epoxide and carbon dioxide, are improved in thermal stability by reacting the free hydroxyl groups thereon with a hydroxyl reactive sulfur compound.The resulting end capped polycarbonates are useful for producing molded products, films, and packages which are resistant to thermal degradation.
摘要翻译： 通过使脂族或脂环族1,2-单环氧化物与二氧化碳反应并具有基本上交替的环氧化物和二氧化碳单元形成的类型的聚碳酸酯通过使其上的游离羟基与羟基反应性硫化合物反应来改善热稳定性。
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