发明名称 |
Batch process for the production of polycarbonate by interfacial polymerization |
摘要 |
A method of preparing a polycarbonate comprising the steps of: a) charging at least one dihydroxy compound, an inert solvent, water, caustic, carbonyl halide, and catalyst to a vessel, and maintaining the pH of the reaction mixture between about 4 and about 12 during charging; and b) within an interval of between 0 and about 90% of the total carbonyl halide addition to the vessel, activating a reaction system that produces monofunctional aromatic chloroformates (MAC) and introducing the MAC to the vessel within the interval of 0 to about 90% of the total carbonyl halide addition to the vessel; where the MAC reaction system is coupled with the vessel, and where means are provided for delivery of the MAC from the reaction system to the vessel.
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申请公布号 |
US6103855(A) |
申请公布日期 |
2000.08.15 |
申请号 |
US19990281497 |
申请日期 |
1999.03.30 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
SILVA, JAMES MANIO;DARDARIS, DAVID MICHEL;FLOWERS, LARRY IVIS;HOOVER, JAMES FRANKLIN;KO, ALLEN WAI-YEE |
分类号 |
C08G64/22;C08G64/14;C08G64/24;(IPC1-7):C08G63/02 |
主分类号 |
C08G64/22 |
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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