- Patent Title: Method for producing trans-bis(aminomethyl)cyclohexane, method for producing bis(isocyanatomethyl)cyclohexane, bis(isocyanatomethyl)cyclohexane, polyisocyanate composition, and polyurethane resin
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Application No.: US14908875Application Date: 2014-07-25
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Publication No.: US09969675B2Publication Date: 2018-05-15
- Inventor: Takeshi Fukuda , Kazuhiro Kosumi , Jun Takahashi , Keita Takuno , Ryo Shinagawa , Masashi Shimamoto , Gran Martinez Alejandro , Satoshi Yamasaki , Goro Kuwamura
- Applicant: MITSUI CHEMICALS, INC.
- Applicant Address: JP Tokyo
- Assignee: MITSUI CHEMICALS, INC.
- Current Assignee: MITSUI CHEMICALS, INC.
- Current Assignee Address: JP Tokyo
- Agency: Rankin, Hill & Clark LLP
- Priority: JP2013-160592 20130801
- International Application: PCT/JP2014/069695 WO 20140725
- International Announcement: WO2015/016148 WO 20150205
- Main IPC: C07C209/48
- IPC: C07C209/48 ; C07C265/04 ; C07C265/14 ; C07C263/10 ; C07C253/30 ; C07C211/18 ; C07C255/46 ; C08G18/78 ; C08G18/75
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.
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