| 发明名称 |
Process for producing acid anhydrides |
| 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.
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| 申请公布号 |
US6018057(A) |
申请公布日期 |
2000.01.25 |
| 申请号 |
US19930086885 |
申请日期 |
1993.07.07 |
| 申请人 |
RHODIA CHIMIE |
发明人 |
ALAS, MICHEL;GUBELMANN, MICHEL;POPA, JEAN-MICHEL |
| 分类号 |
C07C51/56;(IPC1-7):C07D305/00 |
主分类号 |
C07C51/56 |
| 代理机构 |
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