发明名称 |
PROCESS FOR THE PREPARATION OF DI- AND POLYAMINES OF THE DIPHENYLMETHANE SERIES |
摘要 |
Preparation of di- and polyamine of diphenylmethane group (I) comprises reacting aniline and formaldehyde in the presence of hydrochloric acid (less than 0.001 wt.%) (containing bivalent and/or higher valency metal ions). An independent claim is also included for the preparation of di- and polyisocyanate of diphenylmethane group comprising preparing (I) and reacting (I) with phosgene. |
申请公布号 |
KR20060052239(A) |
申请公布日期 |
2006.05.19 |
申请号 |
KR20050101597 |
申请日期 |
2005.10.27 |
申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
MUELLER HEINZ HERBERT;WERSHOFEN STEFAN;GRABOWSKI STEFAN |
分类号 |
C07C209/60;C07C209/78 |
主分类号 |
C07C209/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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