发明公开
EP0495426A2 Preparation of 3,5-dichlorophthalic acid and 3,5-dichlorophthalic anhydride
失效
Herstellung von 3,5-Dichlorphthalsäureund von 3,5-Dichlorphthalsäureanhydrid。
- 专利标题: Preparation of 3,5-dichlorophthalic acid and 3,5-dichlorophthalic anhydride
- 专利标题(中): Herstellung von 3,5-Dichlorphthalsäureund von 3,5-Dichlorphthalsäureanhydrid。
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申请号: EP92100430.5申请日: 1992-01-13
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公开(公告)号: EP0495426A2公开(公告)日: 1992-07-22
- 发明人: Fertel, Lawrence B. , O'Reilly, Neil J. , Lin, Henry C.
- 申请人: OCCIDENTAL CHEMICAL CORPORATION
- 申请人地址: 2801 Long Road Grand Island New York 14072-1244 US
- 专利权人: OCCIDENTAL CHEMICAL CORPORATION
- 当前专利权人: OCCIDENTAL CHEMICAL CORPORATION
- 当前专利权人地址: 2801 Long Road Grand Island New York 14072-1244 US
- 代理机构: VOSSIUS & PARTNER
- 优先权: US641961 19910116
- 主分类号: C07C51/41
- IPC分类号: C07C51/41 ; C07C51/00 ; C07C63/68
摘要:
Polychlorophthalimides, specifically, N-substituted tetrachlorophthalimides and N-substituted trichlorophthalimides may be treated with zinc and a base in aqueous solution to yield, after acidification, the product 3,5-dichlorophthalic acid or salts thereof.
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