Invention Grant
- Patent Title: Process for preparing isocyanates
- Patent Title (中): 异氰酸酯的制备方法
-
Application No.: US13125895Application Date: 2010-08-02
-
Publication No.: US08492580B2Publication Date: 2013-07-23
- Inventor: Bernhard Geissler , Eckhard Stroefer , Andreas Schmidt , Matthias Kloetzer
- Applicant: Bernhard Geissler , Eckhard Stroefer , Andreas Schmidt , Matthias Kloetzer
- 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: EP09167199 20090804
- International Application: PCT/EP2010/061177 WO 20100802
- International Announcement: WO2011/015541 WO 20110210
- Main IPC: C07C263/00
- IPC: C07C263/00
Abstract:
The invention relates to an improved multistage process for the continuous preparation of diisocyanates by reaction of the corresponding diamines with carbonic acid derivatives and alcohols to form low molecular weight monomeric urethanes and thermal dissociation of the latter.
Public/Granted literature
- US20110207961A1 PROCESS FOR PREPARING ISOCYANATES Public/Granted day:2011-08-25
Information query
