N-置換カルバミン酸エステルの製造方法、該N-置換カルバミン酸エステルを用いるイソシアネートの製造方法、ならびにN-置換カルバミン酸エステルおよび芳香族ヒドロキシ化合物を含むN-置換カルバミン酸エステルの移送用および貯蔵用組成物

Japanese Patent JP5043191

B2

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.

Shinohata Masaaki
Nobuhisa Miyake

JP2010524277A

October 10, 2012

September 29, 2009

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Asahi Kasei Chemicals Corporation

C07C269/04; C07C263/04; C07C265/14; C07C269/08; C07C271/40

JPH02759A	1990-01-05
JPH0320254A	1991-01-29
JPH04164060A	1992-06-09
JPH02759A	1990-01-05
JPH0320254A	1991-01-29
JPH04164060A	1992-06-09

Yoshiyuki Inaba
Toshifumi Onuki
Kazuhiko Naito

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