发明名称 |
NOVEL METHOD FOR PRODUCING POLYPHENYLENE ETHER |
摘要 |
<p>Disclosed is a method for producing a polyphenylene ether, which comprises a step of preparing a polymerization solution composed of 10-25 parts by mass of a phenolic compound (M) and 75-90 parts by mass of an aromatic solvent (A) with the total of the compound and the solvent being 100 parts by mass, and 0.1-10 parts by mass of a catalyst (C) containing a metal salt; a step of performing an oxidative polymerization of the phenolic compound (M) by passing an oxygen-containing gas through the polymerization solution; a step of stopping the polymerization by mixing an aqueous chelating agent solution into the polymerization solution; a step of subjecting a diphenoquinone compound produced as a by-product to a quinone binding process or removal by reduction; and a step of obtaining a polyphenylene ether by separating the aqueous phase through liquid-liquid separation. In the method for producing a polyphenylene ether, 0.001-0.004 part by weight of an ion catalyst (D) is added into the polymerization solution before the liquid-liquid separation.</p> |
申请公布号 |
EP2267058(B1) |
申请公布日期 |
2014.08.27 |
申请号 |
EP20090731641 |
申请日期 |
2009.04.16 |
申请人 |
ASAHI KASEI CHEMICALS CORPORATION |
发明人 |
MAEDA, MUTSUMI;FURUKAWA, HIROAKI |
分类号 |
C08G65/44;C08G65/00 |
主分类号 |
C08G65/44 |
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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