发明授权
- 专利标题: Preparation of bisphenol-A bisimides
- 专利标题(中): 双酚A双酰亚胺的制备
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申请号: US658501申请日: 1976-02-17
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公开(公告)号: US4048190A公开(公告)日: 1977-09-13
- 发明人: Donald S. Johnson , Frank J. Williams, III
- 申请人: Donald S. Johnson , Frank J. Williams, III
- 申请人地址: NY Schenectady
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: NY Schenectady
- 主分类号: C07D209/48
- IPC分类号: C07D209/48 ; C07D209/34
摘要:
A process for purifying a bisphenol-A bisimide which comprises treating the latter with a polar solvent selected from the class consisting of methanol, acetonitrile, acetone, and diethyl ether.