| 发明名称 |
Process for producing itaconic anhydride |
| 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 |
US5260456(A) |
申请公布日期 |
1993.11.09 |
| 申请号 |
US19920870773 |
申请日期 |
1992.04.21 |
| 申请人 |
RHONE-POULENC CHIMIE |
发明人 |
ALAS, MICHEL;GUBELMANN, MICHEL;POPA, JEAN-MICHEL |
| 分类号 |
C07C51/56;(IPC1-7):C07D307/60 |
主分类号 |
C07C51/56 |
| 代理机构 |
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代理人 |
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| 地址 |
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