公开(公告)号：US20190241501A1

公开(公告)日：2019-08-08

申请号：US16340478

申请日：2017-10-09

Applicant: BASF SE

Inventor： Armin LANGE DE OLIVEIRA ,  Ines LOTTENBURGER ,  Christian BECHTOLD ,  Thomas HEIDEMANN

IPC: C07C209/72 ,  C07C211/36

Abstract: Process for hydrogenating toluenediamine (TDA) tar containing TDA and high boilers relative to TDA, including the step of contacting the toluenediamine tar with a heterogeneous hydrogenation catalyst comprising at least one metal selected from the group consisting of Ni, Co, Ru, Pd, Pt on at least one catalyst support selected from the group consisting of carbon, TiO2 and ZrO2, and with hydrogen under hydrogenating conditions.