发明授权
- 专利标题: Process for the preparation of halophthalic anhydrides
- 专利标题(中): 制备卤代邻苯二甲酸酐的方法
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申请号: US721004申请日: 1991-06-26
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公开(公告)号: US5233054A公开(公告)日: 1993-08-03
- 发明人: David Y. Tang , Mary K. Cocoman , Harry E. Buckholtz
- 申请人: David Y. Tang , Mary K. Cocoman , Harry E. Buckholtz
- 申请人地址: NY Niagara Falls
- 专利权人: Occidental Chemical Corporation
- 当前专利权人: Occidental Chemical Corporation
- 当前专利权人地址: NY Niagara Falls
- 主分类号: C07C51/377
- IPC分类号: C07C51/377 ; C07C51/567 ; C07C253/30
摘要:
Halophthalic anhydrides are prepared by the liquid phase reaction of a brominating agent with halogen substituted hexa- or tetra-hydrophthalic anhydrides.
公开/授权文献
- US4611387A Process for producing NPN type lateral transistors 公开/授权日:1986-09-16
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