Invention Grant
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
- Patent Title: Process for preparing isocyanates by thermally cleaving carbamates
- Patent Title (中): 通过热裂解氨基甲酸酯制备异氰酸酯的方法
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Application No.: US13513460Application Date: 2010-11-30
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Publication No.: US08822718B2Publication Date: 2014-09-02
- Inventor: Michael Bock , Eckhard Stroefer , Robert Baumann , Axel Franzke , Joachim Pfeffinger
- Applicant: Michael Bock , Eckhard Stroefer , Robert Baumann , Axel Franzke , Joachim Pfeffinger
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP09177643 20091201
- International Application: PCT/EP2010/068500 WO 20101130
- International Announcement: WO2011/067242 WO 20110609
- Main IPC: C07C263/04
- IPC: C07C263/04
Abstract:
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.
Public/Granted literature
- US20120245377A1 PROCESS FOR PREPARING ISOCYANATES BY THERMALLY CLEAVING CARBAMATES Public/Granted day:2012-09-27
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