发明名称 |
Melt catalytic preparation of copolymeric polycarbonate from hydroquinone |
摘要 |
The present invention relates to a method of preparing a copolymeric polycarbonate which comprises melt-polycondensing a mixture of an aromatic dihydroxy compound comprising hydroquinone or substituted hydroquinones and a diester carbonate in the presence of a catalyst containing alkali metal compounds and/or alkaline earth metal compounds.
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申请公布号 |
US5324809(A) |
申请公布日期 |
1994.06.28 |
申请号 |
US19920903318 |
申请日期 |
1992.06.24 |
申请人 |
GE PLASTICS JAPAN, LTD. |
发明人 |
SAKASHITA, TAKESHI;SHIMODA, TOMOAKI;KISHIMURA, KOTARO;UCHIMURA, SHUICHI |
分类号 |
C08G64/14;C08G64/00;C08G64/04;C08G64/20;C08G64/30;C08G64/40;C08K3/00;C08K3/24;C08K5/00;C08K5/1515;C08K5/36;C08K5/42;C08K5/52;C08L69/00;(IPC1-7):C08G64/20 |
主分类号 |
C08G64/14 |
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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