发明申请
- 专利标题： PROCESS FOR PRODUCING DIAMINES AND POLYAMINES OF THE DIPHENYLMETHANE SERIES
- 专利标题（中）： 二氯甲烷系列二胺和多胺的制备方法
-
申请号： US12405287申请日： 2009-03-17
-
公开(公告)号： US20090240077A1公开(公告)日： 2009-09-24
- 发明人: Stefan Wershofen , Heinz-Herbert Muller , Richard Adamson , Fritz Pohl , Knut Sommer
- 申请人： Stefan Wershofen , Heinz-Herbert Muller , Richard Adamson , Fritz Pohl , Knut Sommer
- 申请人地址： DE Leverkusen
- 专利权人： Bayer MaterialScience AG
- 当前专利权人： Bayer MaterialScience AG
- 当前专利权人地址： DE Leverkusen
- 优先权： DE102008015123.8 20080320
- 主分类号： C07C263/10
- IPC分类号： C07C263/10 ; C07C209/78
摘要：
The present invention relates to a process for producing diamines and polyamines of the diphenylmethane series (MDA) by reacting aniline and formaldehyde in the presence of an acid catalyst, wherein the aniline contains in total less than 0.5 wt. %, based on the total weight of aniline, of one or more compounds which contain at least one carbonyl group or of one or more compounds that are formed by reaction of these compounds which contain at least one carbonyl group with aniline.
公开/授权文献
信息查询
