发明名称 VERFAHREN ZUR HERSTELLUNG VON ISOCYANATEN
摘要 A process for the preparation of derivatives of aliphatic, cycloaliphatic, and araliphatic compounds containing from 1 to 3 isocyanate groups bonded to from 1 to 3 secondary or tertiary carbon atoms, or a combination thereof, is disclosed. The process comprises reacting a compound of the formula R-(CO-NHCl)n, wherein R represents an aliphatic, cycloaliphatic, or araliphatic radical, with a tertiary amine having a pKa greater than 7, at a temperature from about 20 DEG to about 180 DEG C., in an inert solvent, to form a compound of the formula R-(N=C=O)n, wherein the isocyanate groups are bonded to secondary or tertiary carbon atoms.
申请公布号 DE2824648(A1) 申请公布日期 1980.01.17
申请号 DE19782824648 申请日期 1978.06.05
申请人 AKZO GMBH 发明人 ZENGEL,HANS,DIPL.-ING.DR.;BERGFELD,MANFRED,DIPL.-CHEM.DR.;ZIELKE,RAINER,DIPL.-CHEM.DR.;KLIMESCH,ERICH
分类号 C07C265/00;C07C67/00;C07C241/00;C07C263/12;C07C265/04;C07C275/06;(IPC1-7):C07C119/042;C07C118/04 主分类号 C07C265/00
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