Method for production of diaminodiphenylmethanes

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US06649798B2 Method for production of diaminodiphenylmethanes 失效

Patent Title: Method for production of diaminodiphenylmethanes
Application No.: US10203250

Application Date: 2002-08-07
Publication No.: US06649798B2

Publication Date: 2003-11-18
Inventor: Stephan Klein , Dirk Grotjohann , Christine Mendoza-Frohn , Daniel Koch , Heinz-Herbert Müller , Hans-Georg Pirkl , Rudolf Uchdorf , Gerhard Wegener
Applicant: Stephan Klein , Dirk Grotjohann , Christine Mendoza-Frohn , Daniel Koch , Heinz-Herbert Müller , Hans-Georg Pirkl , Rudolf Uchdorf , Gerhard Wegener
Priority: DE10006452 20000214
Main IPC: C07C21100
IPC: C07C21100

Abstract:

The present invention concerns a process for the production of methylenedianiline (MDA) having a high monomer content.

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