发明名称 |
PROCEDURE FOR CONTINUOUS MANUFACTURING OF ORGANIC MONO- AND/OR POLYISOCYANATES |
摘要 |
The invention relates to a process for the continuous preparation of organic isocyanates, preferably polyisocyanates, through the reaction of organic amines, preferably polyamines, with phosgene in the presence of organic solvents under pressure, for example from 5 to 100 bar, at elevated temperatures, for example from 100 to 220 DEG C., whereby the reaction mixture is partially recycled, preferably using natural circulation, and the hydrogen chloride content in the reaction mixture prior to the addition of the amine is less than 0.5 percent by weight based on the total weight of the reaction mixture and the molar ratio of phosgene to NH2 group in the organic amines is from 12:1 to 200:1. |
申请公布号 |
EP0150435(B1) |
申请公布日期 |
1988.03.02 |
申请号 |
EP19840115708 |
申请日期 |
1984.12.18 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
OHLINGER, RAINER, DR.;SCHNEZ, HARALD, DR.;PFANNENSTIEHL, LUDWIG;BLUMENBERG, BERND, DR.;RAABE, HANS JOACHIM, DR. |
分类号 |
C07C263/10;C07C265/04;C07C265/12;(IPC1-7):C07C118/02 |
主分类号 |
C07C263/10 |
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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