| 发明名称 |
Process for producing highly pure aromatic carboxylic acids |
| 摘要 |
An improved process for producing highly pure aromatic carboxylic acid from an impure solid acid product whereby the solid acid product is efficiently dissolved in a suitable solvent at relatively low temperatures despite the presence of solid lumps.
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| 申请公布号 |
US6245939(B1) |
申请公布日期 |
2001.06.12 |
| 申请号 |
US19980201634 |
申请日期 |
1998.11.30 |
| 申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HSU YU-WEI;LIN CHEN-LONG |
| 分类号 |
C07C51/43;C07C51/487;(IPC1-7):C07C51/42 |
主分类号 |
C07C51/43 |
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