发明名称 |
Process for producing low-molecular polyphenylene ether |
摘要 |
A process for producing a low-molecular polyphenylene ether having a content of components with molecular weights of 20,000 or more of 10 mass % or less and a number average molecular weight of 4,000 or less by a redistribution reaction which involves reacting a raw polyphenylene ether having a number average molecular weight of 10,000 or more with a polyphenol compound and a radical initiator, characterized in that the redistribution reaction step is a step conducted in a solvent; the ratio of the raw polyphenylene ether to the solvent (raw polyphenylene ether:solvent) (mass ratio) is provided at 0.4:100 to 40:100 (mass ratio); and the ratio of the radical initiator to the solvent (radical initiator:solvent) (mass ratio) is provided at 0.5:100 to 5:100 (mass ratio). |
申请公布号 |
US7858726(B2) |
申请公布日期 |
2010.12.28 |
申请号 |
US20070224181 |
申请日期 |
2007.02.14 |
申请人 |
ASAHI KASEI CHEMICHALS CORPORATION |
发明人 |
ONIZUKA KENZO;SAKURAI MINORU |
分类号 |
C08G59/68;C08G61/02;C08G63/78;C08G65/38 |
主分类号 |
C08G59/68 |
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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