发明名称 |
METHOD FOR PROCESSING COMPOSITIONS CONTAINING 1,1,2,2-TETRAMETHOXYETHANE AND GLYOXAL DIMETHYL ACETAL |
摘要 |
A process is proposed for distillatively working up an aqueous composition which comprises 1,1,2.2-tetramethoxyethane, glyoxal dimethyl acetal and methanol, wherein the workup of this composition is carried out in a dividing wall column to form low boiler, medium boiler and/or high boiler fractions, and a dividing wall is disposed in the longitudinal direction in the dividing wall column to form an upper common column region, a lower common column region, a feed section having rectifying section and stripping section and a withdrawal section having stripping section and rectifying section, and the aqueous composition is fed into the middle region of the feed section. |
申请公布号 |
EP1660426(A1) |
申请公布日期 |
2006.05.31 |
申请号 |
EP20040764787 |
申请日期 |
2004.09.03 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
HEYDRICH, GUNNAR;RICHTER, INGO;KRUG, THOMAS |
分类号 |
C07C29/80;C07C41/50;C07C41/58;C07C43/303;C07C45/71;C07C45/82;(IPC1-7):C07C41/50 |
主分类号 |
C07C29/80 |
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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