发明授权
- 专利标题： Process for the preparation of para,para'-polyphenyldicarboxylic acid
- 专利标题（中）： 对位聚对苯二甲酸的制备方法
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申请号： US352575申请日： 1989-05-16
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公开(公告)号： US4996353A公开(公告)日： 1991-02-26
- 发明人: Guo-shuh J. Lee , Kenneth A. Burdett , Joseph J. Maj
- 申请人： Guo-shuh J. Lee , Kenneth A. Burdett , Joseph J. Maj
- 申请人地址： MI Midland
- 专利权人： The Dow Chemical Company
- 当前专利权人： The Dow Chemical Company
- 当前专利权人地址： MI Midland
- 主分类号： C07C51/265
- IPC分类号： C07C51/265
摘要：
A process for the preparation of polyphenyl dicarboxylic acids is disclosed. The process comprises contacting para,para'-diisoalkyl or dialkyl-polyphenyl or an oxidation intermediate thereof with oxygen under reaction conditions sufficient to form para,para'-polyphenyldicarboxylic acid. The process is optionally carried out in the presence of cobalt, manganese, and bromine compounds.
公开/授权文献
- US3932977A Ball inflating apparatus and method 公开/授权日：1976-01-20
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