发明名称 |
Process for preparing crystalline aromatic polyetherketone |
摘要 |
A process for preparing a crystalline aromatic polyetherketone having a reduced viscosity of 0.6 or more is disclosed. The process includes polycondensing an aromatic dihydroxy compound with a dihalogeno aromatic ketone in a solvent having the following general formula (I) or (II): <IMAGE> (I) <IMAGE> (II) wherein each of R1, R2 and R3 is independently a hydrogen atom, a C1-3 alkyl group or a phenyl group; X is an oxygen atom, a sulfur atom or a direct bond; Y is an oxygen atom or a ketone group; and n is 0 or 1; in the presence of an alkali compound.
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申请公布号 |
US4757126(A) |
申请公布日期 |
1988.07.12 |
申请号 |
US19860833076 |
申请日期 |
1986.02.26 |
申请人 |
ASAHI KASEI KOGYO KABUSHIKI KAISHA |
发明人 |
FUKAWA, ISABURO;TANABE, TSUNEAKI |
分类号 |
C08G65/38;C08G65/40;(IPC1-7):C08G8/02;C08G14/00 |
主分类号 |
C08G65/38 |
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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