| 发明名称 |
Distillation process for separating diisocyanatodiphenylmethane isomers |
| 摘要 |
<p>Distillation of an isomeric mixture of diisocyanatodiphenylmethanes containing at least the 2,2'-, 2,4' and 4,4'-isomers is such that at least in one step a partitioned column is used.</p> |
| 申请公布号 |
EP1475367(A1) |
申请公布日期 |
2004.11.10 |
| 申请号 |
EP20040009786 |
申请日期 |
2004.04.24 |
| 申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
SCHAL, HANS-PETER, DR.;WOLF, ULRICH;THELEN, BERND |
| 分类号 |
C07C263/20;C07C265/14;(IPC1-7):C07C263/20 |
主分类号 |
C07C263/20 |
| 代理机构 |
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