| 发明名称 |
METHOD FOR PREPARING LINEAR POLYCARBONATES FROM CYCLIC OLIGOMERS |
| 摘要 |
Cyclic polycarbonate oligomers are converted to linear polycarbonate resins by heating with a polycarbonate formation catalyst which generates aryl carbanions at temperatures up to about 300 DEG C. The preferred catalysts are tetraarylborates such as tetramethylammonium tetraphenylborate. |
| 申请公布号 |
DE3664216(D1) |
申请公布日期 |
1989.08.10 |
| 申请号 |
DE19863664216 |
申请日期 |
1986.04.02 |
| 申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
EVANS, THOMAS LANE;WILLIAMS, DAVID ALAN |
| 分类号 |
C08G63/00;C08G64/20;C08G64/30;(IPC1-7):C08G63/62 |
主分类号 |
C08G63/00 |
| 代理机构 |
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代理人 |
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