| 发明名称 |
METHOD FOR PRODUCING COLOR-STABLE MDA AND MDI |
| 摘要 |
The invention relates to a process for preparing methylenediphenyldiamine (MDA) by reacting formaldehyde and aniline in the presence of an acidic catalyst, wherein the oxygen content in the process for preparing MDA is <10 000 ppm, based on all compounds present in the process. The invention further relates to the phosgenation of MDA to methylenediphenyl diisocyanate (MDI). |
| 申请公布号 |
US2012046497(A1) |
申请公布日期 |
2012.02.23 |
| 申请号 |
US201013266049 |
申请日期 |
2010.04.20 |
| 申请人 |
STROEFER ECKHARD;SCHELLING HEINER;REINHARDT ROBERT;ZOELLINGER MICHAEL;BREUNINGER DANIEL;KRAEMER MARKUS;THIELE KAI;VAN DEN ABEEL PETER;BASF SE |
发明人 |
STROEFER ECKHARD;SCHELLING HEINER;REINHARDT ROBERT;ZOELLINGER MICHAEL;BREUNINGER DANIEL;KRAEMER MARKUS;THIELE KAI;VAN DEN ABEEL PETER |
| 分类号 |
C07C209/60 |
主分类号 |
C07C209/60 |
| 代理机构 |
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