发明授权
- 专利标题： Process for producing isocyanates
- 专利标题（中）： 异氰酸酯的制备方法
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申请号： US405014申请日： 1995-03-16
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公开(公告)号： US5502244A公开(公告)日： 1996-03-26
- 发明人: Takashi Okawa , Toshinari Aoki , Hiroshi Matsunaga , Hideo Igarashi
- 申请人： Takashi Okawa , Toshinari Aoki , Hiroshi Matsunaga , Hideo Igarashi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX6-048690 19940318
- 主分类号： B01J31/02
- IPC分类号： B01J31/02 ; C07B61/00 ; C07C263/04 ; C07C265/14 ; C07C263/00
摘要：
Provided is a process for producing isocyanates from carbamic acid esters which comprises thermally decomposing carbamic acid esters in the presence of a catalyst containing at least one compound selected from the group consisting of organic sulfonic acids and alkaline metal salts of organic sulfonic acids. Thereby, a high thermal decomposition rate can be provided and isocyanate can be obtained in a high yield.
公开/授权文献
- US6144833A Fixing device 公开/授权日：2000-11-07