发明授权
- 专利标题： Process for the production of polynuclear aromatic polyamines
- 专利标题（中）： 生产多核芳香族多胺的方法
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申请号： US335062申请日： 1989-04-06
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公开(公告)号： US4924028A公开(公告)日： 1990-05-08
- 发明人: Hartmut Knofel , Michael Brockelt , Marcel Petinaux , Rudolf Uchdorf
- 申请人： Hartmut Knofel , Michael Brockelt , Marcel Petinaux , Rudolf Uchdorf
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX3812083 19880412
- 主分类号： C07C209/68
- IPC分类号： C07C209/68 ; C07C209/78 ; C07C211/49
摘要：
This invention relates to an improved process for the preparation of polynuclear aromatic polyamines in which the reaction product is prepared by condensing aniline with formaldehyde in the presence of water and acidic catalysts and is worked up by extraction with a hydrophobic solvent. The acid catalyst that accumulates in the aqueous phase during the extraction process is reused.
公开/授权文献
- US5569377A Spray painting equipment 公开/授权日：1996-10-29
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