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:
May. 15, 2018
Filed:
Jul. 25, 2014
Mitsui Chemicals, Inc., Tokyo, JP;
Takeshi Fukuda, Kurume, JP;
Kazuhiro Kosumi, Omuta, JP;
Jun Takahashi, Omuta, JP;
Keita Takuno, Mobara, JP;
Ryo Shinagawa, Omuta, JP;
Masashi Shimamoto, Tamana, JP;
Gran Martinez Alejandro, Chiba, JP;
Satoshi Yamasaki, Chiba, JP;
Goro Kuwamura, Chiba, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
Abstract
A method for producing trans-bis(aminomethyl)cyclohexane includes a trans-isomerization step in which cis-dicyanocyclohexane is isomerized into trans-dicyanocyclohexane by heating dicyanocyclohexane containing cis-dicyanocyclohexane in the presence of a tar component produced by distillation of dicyanocyclohexane; and an aminomethylation step in which trans-dicyanocyclohexane produced by the trans-isomerization step is allowed to contact with hydrogen to produce trans-bis(aminomethyl)cyclohexane.