PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYL METHANE SERIES
- 申请公布号：
- PT1524260(E)
- 申请号：
- PT20040023291T
- 申请日期：
- 2004.09.30
- 申请公布日期：
- 2007.06.22
- 申请人：
- BAYER MATERIALSCIENCE AG
- 发明人：
- DR. MARKUS DUGAL
- 分类号：
- C07C209/78;C07B61/00;C07C209/36;C07C211/49;C07C211/50;C07C263/10;C07C265/14
- 主分类号：
- C07C209/78
- 摘要：
- Production of di- and poly-amines of the diphenylmethane series comprises - (a) catalytically converting nitrobenzene and methanol to aniline and formaldehyde; and then - (b) converting the aniline and formaldehyde to the required di- and poly-amines in presence of an acid catalyst. - An INDEPENDENT CLAIM is also claimed for the above process with the additional step of phosgenating the di- and poly-amines to give di- and poly-isocyanates of the diphenylmethane series.
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