申请人:ASAHI KASEI KABUSHIKI KAISHA
公开号:EP3153499A1
公开(公告)日:2017-04-12
The present invention is a method for producing an N-substituted carbamic acid ester derived from an organic amine from an organic amine, a carbonic acid derivative and a hydroxy composition containing one or more types of hydroxy compounds, wherein the organic amine, the carbonic acid derivative and the hydroxy composition are reacted using a urethane production reaction vessel provided with a condenser, a gas containing the hydroxy composition, the compound having the carbonyl group derived from the carbonic acid derivative, and an ammonia formed as a by-product in the reaction, is introduced into the condenser provided in the urethane production reaction vessel, and the hydroxy composition and the compound having the carbonyl group derived from the carbonic acid derivative are condensed, and wherein a stoichiometric ratio of a hydroxy compound contained in the condensed hydroxy composition to the condensed compound having the carbonyl group derived from the carbonic acid derivative is 1 or more, and a ratio of number of carbonyl groups (-C(=O)-) contained in the compound having the carbonyl group derived from the carbonic acid derivative and number of ammonia molecules contained in the ammonia recovered as a gas from the condenser is 1 or less.
本发明是一种用有机胺、碳酸衍生物和含有一种或多种羟基化合物的羟基组合物生产由有机胺衍生的N-取代氨基甲酸酯的方法,其中有机胺、碳酸衍生物和羟基组合物在一个装有冷凝器的氨基甲酸乙酯生产反应釜中反应、使用配备有冷凝器的聚氨酯生产反应容器对碳酸衍生物和羟基组合物进行反应,将含有羟基组合物、从碳酸衍生物衍生出的具有羰基的化合物以及在反应中作为副产物形成的氨的气体引入聚氨酯生产反应容器中的冷凝器、缩合羟基组合物和具有碳酸衍生物衍生的羰基的化合物,其中缩合羟基组合物中所含的羟基化合物与具有碳酸衍生物衍生的羰基的缩合化合物的化学计量比为 1 或以上、且具有碳酸衍生物衍生的羰基的化合物中所含的羰基数(-C(=O)-)与从冷凝器中作为气体回收的氨中所含的氨分子数之比为 1 或更少。