发明名称 |
Process for synthesis of polyestercarbonate-siloxane copolymers |
摘要 |
A process for synthesizing polyestercarbonate-siloxane copolymers which have a smaller concentration of low molecular weight species and greater thermal stability has been described. Essentially the process includes adding the comonomer, diacid chloride siloxane, after approximately 1/3 of the phosgene has been added, in a conventional interfacial copolymerization, (as opposed to addition at the beginning of the polymerization).
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申请公布号 |
US5214118(A) |
申请公布日期 |
1993.05.25 |
申请号 |
US19900593165 |
申请日期 |
1990.10.05 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
HAWKINS, CHRISTOPHER M.;ROSENQUIST, NILES R. |
分类号 |
C08G63/64;C08G64/18;C08G77/448 |
主分类号 |
C08G63/64 |
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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