The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2015
Filed:
Dec. 14, 2010
Yoshiki Shimokawatoko, Chiba, JP;
Koichi Murayama, Chiba, JP;
Hiroshi Takeuchi, Ichihara, JP;
Takashi Kanno, Ichihara, JP;
Masaaki Sasaki, Ichihara, JP;
Kazuhiko Okubo, Minato-ku, JP;
Yoshiki Shimokawatoko, Chiba, JP;
Koichi Murayama, Chiba, JP;
Hiroshi Takeuchi, Ichihara, JP;
Takashi Kanno, Ichihara, JP;
Masaaki Sasaki, Ichihara, JP;
Kazuhiko Okubo, Minato-ku, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
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.