Invention Grant
- Patent Title: Method for producing color-stable MDA and MDI
- Patent Title (中): 生产色泽稳定的MDA和MDI的方法
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Application No.: US13266049Application Date: 2010-04-20
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Publication No.: US08614352B2Publication Date: 2013-12-24
- Inventor: Eckhard Stroefer , Heiner Schelling , Robert Reinhardt , Michael Zoellinger , Daniel Breuninger , Markus Kraemer , Kai Thiele , Peter Van Den Abeel
- Applicant: Eckhard Stroefer , Heiner Schelling , Robert Reinhardt , Michael Zoellinger , Daniel Breuninger , Markus Kraemer , Kai Thiele , Peter Van Den Abeel
- 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: EP09158741 20090424
- International Application: PCT/EP2010/055148 WO 20100420
- International Announcement: WO2010/121997 WO 20101028
- Main IPC: C07C211/00
- IPC: C07C211/00 ; C09B11/02
Abstract:
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
Public/Granted literature
- US20120046497A1 METHOD FOR PRODUCING COLOR-STABLE MDA AND MDI Public/Granted day:2012-02-23
Information query
