发明名称 |
Statistical mixtures of halogenated bisphenols with halogen-free bisphenols, a process for their preparation and their use for the preparation of high-molecular weight thermoplastic polycarbonates |
摘要 |
The invention relates to statistical mixtures of halogenated bisphenols with halogen-free bisphenols and to processes for their preparation. This invention further relates to new aromatic, bromine-containing and/or chlorine-containing, high-molecular weight thermoplastic polycarbonates with good resistance to fire (oxygen index >/= 36%) and good flow properties, to their preparation from the statistical mixtures of halogenated bisphenols and halogen-free bisphenols and to their use alone or as a mixture with halogen-free polycarbonates or with thermoplastic polyesters for the preparation of moldings, films and fibers.
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申请公布号 |
US4170587(A) |
申请公布日期 |
1979.10.09 |
申请号 |
US19770849278 |
申请日期 |
1977.11.07 |
申请人 |
BAYER AG |
发明人 |
FREITAG, DIETER;NOUVERTNE, WERNER;SCHMIDT, MANFRED |
分类号 |
C07C43/295;C08G59/30;C08G63/682;C08G64/08;C08L69/00;(IPC1-7):C08L69/00;C08K7/14 |
主分类号 |
C07C43/295 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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