Mitsui Chemicals, Inc.

Koichi Murayama

Hiroshi Takeuchi

Yoshiki Shimokawatoko

Masaaki Sasaki

Takashi Kanno

Tetsuya Hamada

Koji Takamatsu

Yasushi Kotaki

Mitsuaki Chida

Kazuhiko Okubo

Souta Itou

A method for producing urethane compounds includes allowing a primary amine, a urea and/or an N-unsubstituted carbamate, and an alcohol to react in the presence of a compound containing a noncoordinating anion and a metal atom as a catalyst.

Urethane compound and method for producing the same, and isocyanate and method for producing the same

A method for treating an isocyanate residue, which comprises carrying out a thermal decomposition reaction of a carbamate that is produced by the reaction among an amine, urea and/or an N-unsubstituted carbamic acid ester and an alcohol to produce a decomposition solution, separating an isocyanate and the alcohol from the decomposition solution to produce the isocyanate residue, and bringing the isocyanate residue into contact with high-pressure/high-temperature water to decompose the isocyanate residue into an amine; and a method for treating a carbonate, which comprises bringing the carbonate into contact with high-pressure/high-temperature water to decompose the carbonate into an alcohol.

Method for treatment of isocyanate residue, and method for treatment of carbonate

A method for producing toluenedicarbamate includes a carbamate production process of producing toluenedicarbamate by reaction between toluenediamine, urea, and/or N-unsubstituted carbamic acid ester, and alcohol; and a benzoyleneurea reduction process of reducing a disubstituted benzoyleneurea and a derivative thereof to 10 mol or less relative to 100 mol of toluenedicarbamate, wherein the disubstituted benzoyleneurea is represented by formula (1) below and has a methyl group and an amino group: 

Method for producing toluenedicarbamate, method for producing toluenediisocyanate, and toluenedicarbamate

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Chiba, Japan

Koichi Murayama