发明名称 |
Process for the isolation of purified ethylene glycol carbonate (EGC) |
摘要 |
Ethylene glycol carbonate (EGC) can be isolated in purified form from contaminated material which contains impurities from the group comprising starting materials, by-products and/or catalysts of the preparation process in that the contaminated EGC is subjected to a fractional melt crystallization and the crystals of the purified EGC formed in this case are mechanically separated off from the remaining impurities dissolved in the residual melt.
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申请公布号 |
US5510499(A) |
申请公布日期 |
1996.04.23 |
申请号 |
US19940276748 |
申请日期 |
1994.07.18 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
MENDOZA-FROHN, CHRISTINE;WAGNER, PAUL;WIRGES, HANS-PETER |
分类号 |
C07C68/08;C07C69/96;C07D317/38;(IPC1-7):C07D317/38 |
主分类号 |
C07C68/08 |
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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