| 发明名称 |
Process for the separation of glycols from dimethyl terephthalate |
| 摘要 |
Separation of ethylene glycol and diethylene glycol from dimethyl terephthalate is accomplished by distillation using methyl benzoate or the methyl ester of p-toluic acid as an azeotropic agent.
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| 申请公布号 |
US5391263(A) |
申请公布日期 |
1995.02.21 |
| 申请号 |
US19940186088 |
申请日期 |
1994.01.26 |
| 申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HEPNER, RICHARD R.;MICHEL, ROBERT E.;TROTTER, ROBERT E. |
| 分类号 |
C07C27/02;C07C27/30;C07C29/82;C07C29/86;C07C31/20;C07C41/42;C07C43/13;C07C67/54;C07C69/82;(IPC1-7):B01D3/36 |
主分类号 |
C07C27/02 |
| 代理机构 |
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代理人 |
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