Invention Grant
- Patent Title: Method for producing trans-1,4-bis(aminomethyl) cyclohexane
- Patent Title (中): 反式-1,4-双（氨基甲基）环己烷的制备方法
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Application No.: US13878090Application Date: 2011-10-05
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Publication No.: US08865939B2Publication Date: 2014-10-21
- Inventor: Naritoshi Yoshimura , Shinji Kiyono , Tetsuya Hamada , Eiji Watanabe , Saiko Sawada
- Applicant: Naritoshi Yoshimura , Shinji Kiyono , Tetsuya Hamada , Eiji Watanabe , Saiko Sawada
- Applicant Address: JP Tokyo
- Assignee: Mitsui Chemicals, Inc.
- Current Assignee: Mitsui Chemicals, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2010-227744 20101007
- International Application: PCT/JP2011/073005 WO 20111005
- International Announcement: WO2012/046782 WO 20120412
- Main IPC: C07C209/00
- IPC: C07C209/00 ; C07C253/34 ; C07C209/48 ; C07C253/22 ; B01J23/44 ; B01J25/00 ; B01J25/02
Abstract:
A method for producing trans-1,4-bis(aminomethyl)cyclohexane includes a nuclear hydrogenation step of producing a hydrogenated terephthalic acid or terephthalic acid derivative by nuclear hydrogenation of a terephthalic acid or terephthalic acid derivative, the terephthalic acid or terephthalic acid derivative being at least one selected from the group consisting of terephthalic acid, terephthalic acid ester, and terephthalic acid amide; a cyanation step of treating the hydrogenated terephthalic acid or terephthalic acid derivative with ammonia, thereby producing 1,4-dicyanocyclohexane, and producing trans-1,4-dicyanocyclohexane from the obtained 1,4-dicyanocyclohexane; and an aminomethylation step of treating the trans-1,4-dicyanocyclohexane with hydrogen, thereby producing trans-1,4-bis(aminomethyl)cyclohexane. Metal oxide is used as a catalyst in the cyanation step, and the obtained trans-1,4-dicyanocyclohexane has a metal content of 3000 ppm or less.
Public/Granted literature
- US20130197270A1 METHOD FOR PRODUCING TRANS-1,4-BIS(AMINOMETHYL) CYCLOHEXANE Public/Granted day:2013-08-01
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