发明名称 |
Aromatic thermoplastic polyphosphonatocarbonate |
摘要 |
Thermoplastic polyphosphonatocarbonate prepared by polycondensing at least one aromatic dihydroxy compound with a diaryl carbonate and a phosphonic acid diaryl ester in the presence of a basic polycondensation catalyst at a temperature of from 80 DEG to 340 DEG and under a pressure of 600 to 0.1 mm Hg in an inert gaseous atmosphere, the molar ratio of diaryl carbonate to phosphonic diaryl ester being from 5:95 to 95:5 and the molar ratio of aromatic dihydroxy compound to the sum of diaryl carbonate and phosphonic acid diaryl ester being from 0.91:1 to 0.99:1, and following polycondensation, neutralizing said basic catalyst.
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申请公布号 |
US4322520(A) |
申请公布日期 |
1982.03.30 |
申请号 |
US19800160644 |
申请日期 |
1980.06.18 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
SCHMIDT, MANFRED;BOTTENBRUCH, LUDWIG;FREITAG, DIETER;NOUVERTNE, WERNER |
分类号 |
C08G63/00;C08G64/00;C08G79/02;C08G79/04;(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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主权项 |
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地址 |
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