发明授权
- 专利标题: Method for producing color-stable MDA and MDI
- 专利标题(中): 生产色泽稳定的MDA和MDI的方法
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申请号: US13266049申请日: 2010-04-20
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公开(公告)号: US08614352B2公开(公告)日: 2013-12-24
- 发明人: Eckhard Stroefer , Heiner Schelling , Robert Reinhardt , Michael Zoellinger , Daniel Breuninger , Markus Kraemer , Kai Thiele , Peter Van Den Abeel
- 申请人: Eckhard Stroefer , Heiner Schelling , Robert Reinhardt , Michael Zoellinger , Daniel Breuninger , Markus Kraemer , Kai Thiele , Peter Van Den Abeel
- 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: EP09158741 20090424
- 国际申请: PCT/EP2010/055148 WO 20100420
- 国际公布: WO2010/121997 WO 20101028
- 主分类号: C07C211/00
- IPC分类号: C07C211/00 ; C09B11/02
摘要:
The invention relates to a process for preparing methylenediphenyldiamine (MDA) by reacting formaldehyde and aniline in the presence of an acidic catalyst, wherein the oxygen content in the process for preparing MDA is
公开/授权文献
- US20120046497A1 METHOD FOR PRODUCING COLOR-STABLE MDA AND MDI 公开/授权日:2012-02-23
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