发明授权
- 专利标题： Direct dianhydride synthesis
- 专利标题（中）： 直接二酐合成
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申请号： US11078022申请日： 2005-03-11
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公开(公告)号： US07268237B2公开(公告)日： 2007-09-11
- 发明人: Daniel Joseph Brunelle , James Anthony Cella , Qing Ye , Kwok Pong Chan
- 申请人： Daniel Joseph Brunelle , James Anthony Cella , Qing Ye , Kwok Pong Chan
- 申请人地址： US NY Niskayuna
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： US NY Niskayuna
- 代理商 Andrew J. Caruso; William E. Powell, III
- 主分类号： C07D493/02
- IPC分类号： C07D493/02
摘要：
This invention is related to a method for making diether dianhydrides by the reaction of halophthalic anhydride and a metal salt of an aromatic dihydroxy compound in the presence of a solvent and a phase transfer catalyst. Typical phase transfer catalyst include guanidium salts, aminopyridinium salts, or phosphazenium salts.
公开/授权文献
- US20060205958A1 Direct dianhydride synthesis 公开/授权日：2006-09-14
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