发明授权
US08822718B2 Process for preparing isocyanates by thermally cleaving carbamates
有权
通过热裂解氨基甲酸酯制备异氰酸酯的方法
- 专利标题： Process for preparing isocyanates by thermally cleaving carbamates
- 专利标题（中）： 通过热裂解氨基甲酸酯制备异氰酸酯的方法
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申请号： US13513460申请日： 2010-11-30
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公开(公告)号： US08822718B2公开(公告)日： 2014-09-02
- 发明人: Michael Bock , Eckhard Stroefer , Robert Baumann , Axel Franzke , Joachim Pfeffinger
- 申请人： Michael Bock , Eckhard Stroefer , Robert Baumann , Axel Franzke , Joachim Pfeffinger
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： DE Ludwigshafen
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： EP09177643 20091201
- 国际申请： PCT/EP2010/068500 WO 20101130
- 国际公布： WO2011/067242 WO 20110609
- 主分类号： C07C263/04
- IPC分类号： C07C263/04
摘要：
A process is proposed for preparing isocyanates by thermally cleaving carbamates to obtain a carbamate cleavage gas comprising the corresponding isocyanate and the corresponding alcohol, which comprises quenching the carbamate cleavage gas in the presence of an ether which functions as an inhibitor for the reverse reaction of the isocyanate with the alcohol.