| 发明名称 |
PROCESS FOR PREPARING MIXTURES OF DIPHENYLMETHANE DIISOCYANATES AND POLYPHENYL POLYMETHYLENE POLYISOCYANATES |
| 摘要 |
The present invention relates to a process for preparing mixtures of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates by sequential reaction of benzene to nitrobenzene to aniline to polyphenyl polymethylene polyamines wherein the benzene used as the starting material contains 500 to 5000 ppm w/w toluene and/or xylenes. |
| 申请公布号 |
PT2155655(E) |
申请公布日期 |
2011.09.14 |
| 申请号 |
PT20080736570T |
申请日期 |
2008.04.25 |
| 申请人 |
HUNTSMAN INTERNATIONAL LLC |
发明人 |
ROBERT CARR;NICOLAAS VAN WIECHEN |
| 分类号 |
C07C201/08;C07C205/06 |
主分类号 |
C07C201/08 |
| 代理机构 |
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