| 发明名称 |
PURIFICATION OF CRUDE MALEIC ANHYDRIDE |
| 摘要 |
<p>Crude maleic anhydride is purified by heating a solution of crude maleic anhydride in dimethylbenzophenone for at least fifteen minutes, at total reflux at a temperature above about 230 DEG C, and thereafter recovering maleic anhydride, e.g., by distillation.</p> |
| 申请公布号 |
CA1014565(A) |
申请公布日期 |
1977.07.26 |
| 申请号 |
CA19740196928 |
申请日期 |
1974.04.05 |
| 申请人 |
ALLIED CHEMICAL CORPORATION |
发明人 |
SMITH, ADDISON M.;RECLA, EUGENE B. |
| 分类号 |
C07D307/34;C07C51/573;C07D307/60 |
主分类号 |
C07D307/34 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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