| 发明名称 |
VERFAHREN ZUR HERSTELLUNG VON TOLUOL-DIISOCYANAT |
| 摘要 |
The invention relates to a process for the production of toluene diisocyanate, in which the crude toluenediamine obtained from the hydrogenation is purified and then phosgenated. The purification step reduces the total amount of cyclic ketones to less than 0.1 % by weight, based on 100% by weight of the toluenediamine. |
| 申请公布号 |
AT520652(T) |
申请公布日期 |
2011.09.15 |
| 申请号 |
AT20070011019T |
申请日期 |
2007.06.05 |
| 申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
ZECHLIN, JOACHIM;PENNEMANN, BERND;STEFFENS, FRIEDHELM;WENBIN, JI |
| 分类号 |
C07C265/14;C07C209/36;C07C209/84;C07C263/10 |
主分类号 |
C07C265/14 |
| 代理机构 |
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代理人 |
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| 主权项 |
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