发明授权
- 专利标题: Process for producing acid anhydrides
- 专利标题(中): 酸酐生产工艺
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申请号: US086885申请日: 1993-07-07
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公开(公告)号: US6018057A公开(公告)日: 2000-01-25
- 发明人: Michel Alas , Michel Gubelmann , Jean-Michel Popa
- 申请人: Michel Alas , Michel Gubelmann , Jean-Michel Popa
- 申请人地址: FRX Courbevoie Cedex
- 专利权人: Rhodia Chimie
- 当前专利权人: Rhodia Chimie
- 当前专利权人地址: FRX Courbevoie Cedex
- 优先权: FRX8716065 19871120
- 主分类号: C07C51/56
- IPC分类号: C07C51/56 ; C07D305/00
摘要:
A process for producing anhydrides by passing a solution of the acid, preferably an organic polyacid, which is to undergo anhydridation over an acidified clay and a process for producing the catalysts therefor.
公开/授权文献
- US6109856A Hay bale carrier 公开/授权日:2000-08-29
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