| 发明名称 |
PURIFICATION OF BIS(2-HYDROXYETHYL)TEREPHTHALATE |
| 摘要 |
A process for the removal of color forming impurities, such as aldehydes and nitrogen compounds, from bis(2-hydroxyethyl terephthalate by treatment with mixtures of an alkali metal sulfite and an alkali metal bisulfite.
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| 申请公布号 |
US3716575(A) |
申请公布日期 |
1973.02.13 |
| 申请号 |
USD3716575 |
申请日期 |
1971.02.16 |
| 申请人 |
CELANESE CORP,US |
发明人 |
FOUTS H,US;FINCH R,US;MIREUR J,US |
| 分类号 |
C07C69/82;(IPC1-7):C07C69/82 |
主分类号 |
C07C69/82 |
| 代理机构 |
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