PROCESS FOR THE PREPARATION OF POLYNUCLEAR AROMATIC POLYAMINES
摘要
<p>The present invention relates to an improved embodiment of the process for the preparation of polynuclear aromatic polyamines by condensing aniline with formaldehyde in the presence of water and acidic catalysts and working up the reaction mixture by extraction with a hydrophobic solvent while recycling the acid catalyst obtained in the aqueous phase of the extraction.</p>
申请公布号
EP0509308(A3)
申请公布日期
1993.03.10
申请号
EP19920105525
申请日期
1992.03.31
申请人
BAYER AG
发明人
KNOEFEL, HARTMUT, DR.;BROCKELT, MICHAEL;PETINAUX, MARCEL, DR.;UCHDORF, RUDOLF, DIPL.-ING.;SCHAL, HANS-PETER, DR.