发明名称 |
METHOD FOR PREPARING POLYCARBONATES OF ENHANCED CRYSTALLINITY |
摘要 |
Crystallinity of amorphous precursor polycarbonates is enhanced by contact with at least on diaryl carbonate such as diphenyl carbonate, followed by pelletization and heating to a temperature above the melting point of the diaryl carbonate and below the glass transition temperature of the amorphous precursor polycarbonate. The crystallinity enhancement operation may be conducted in the presence of dihydroxyorganic monomers and may be followed by a solid state polymerization operation.
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申请公布号 |
WO0044811(A1) |
申请公布日期 |
2000.08.03 |
申请号 |
WO1999US26975 |
申请日期 |
1999.11.12 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
DAY, JAMES;CHATTERJEE, GAUTAM |
分类号 |
C08G64/06;C08G64/18;C08G64/30;(IPC1-7):C08G64/40;C08G64/20 |
主分类号 |
C08G64/06 |
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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