发明授权
- 专利标题： Process for preparation of aliphatic diisocyanate compounds
- 专利标题（中）： 脂族二异氰酸酯化合物的制备方法
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申请号： US940364申请日： 1997-09-30
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公开(公告)号： US5789614A公开(公告)日： 1998-08-04
- 发明人: Toyokazu Yagii , Teruo Itokazu , Kenji Oka , Yasutaka Tanaka , Hidetaka Kojima
- 申请人： Toyokazu Yagii , Teruo Itokazu , Kenji Oka , Yasutaka Tanaka , Hidetaka Kojima
- 申请人地址： JPX Osaka
- 专利权人： Daicel Chemical Industries, Ltd.
- 当前专利权人： Daicel Chemical Industries, Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX62-4085 19870113; JPX62-153032 19870618; JPX62-284442 19871111; JPX63-316180 19871216; JPX1-7252 19880113; JPX1-139505 19890601
- 主分类号： C07C269/04
- IPC分类号： C07C269/04 ; C07C263/00
摘要：
An aliphatic diisocyante compound is prepared in a high yield by reacting dimethyl carbonate with an aliphatic diamine in the presence of an alkali catalyst to produce a corresponding urethene compound; and, within 48 hours after the completion of the preparation of the urethane compound, thermally decomposing the urethane compound under a reduced pressure of 1 to 700 Torr in a high-boiling-point solvent.
公开/授权文献
- US4292500A Modular, constructional heating unit 公开/授权日：1981-09-29
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