发明授权
US08759569B2 Process for the production of isocyanates, preferably diisocyanates and polyisocyanates with solvent recirculation
有权
制备异氰酸酯，优选二异氰酸酯和多异氰酸酯与溶剂再循环的方法
- 专利标题： Process for the production of isocyanates, preferably diisocyanates and polyisocyanates with solvent recirculation
- 专利标题（中）： 制备异氰酸酯，优选二异氰酸酯和多异氰酸酯与溶剂再循环的方法
-
申请号： US13380680申请日： 2010-06-16
-
公开(公告)号： US08759569B2公开(公告)日： 2014-06-24
- 发明人: Heiner Schelling , Ulrich Penzel , Eckhard Stroefer , Matthias Eiermann , Jon S. Speier , Kai Thiele , Michael Bock
- 申请人： Heiner Schelling , Ulrich Penzel , Eckhard Stroefer , Matthias Eiermann , Jon S. Speier , Kai Thiele , Michael Bock
- 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.
- 国际申请： PCT/EP2010/058421 WO 20100616
- 国际公布： WO2010/149544 WO 20101229
- 主分类号： C07C263/00
- IPC分类号： C07C263/00
摘要：
The present invention relates to a process for the production of isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), by reacting an amine with phosgene in the liquid phase or in the gas phase to form the corresponding isocyanates, subsequent removal of the solvent in at least two steps to obtain at least two solvent streams, individual treatment of the at least two solvent streams, and recirculation of at least a portion of the solvent streams.
公开/授权文献
信息查询
