Hydrogenation of highly contaminated methylenedianiline

Details Hydrogenation of highly contaminated methylenedianiline Hydrogenation of highly contaminated methylenedianiline

2006-05-02

2006-05-02

Davis, Brian (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

07038088

ABSTRACT:
This invention relates to a process for the catalytic hydrogenation of impurity laden methylenedianiline feedstocks commonly referred to a MDA-50 and MDA-60. The process for hydrogenating methylenedianiline containing at least 40% oligomer function by weight comprises:contacting the feedstock with hydrogen in the presence of a rhodium/ruthenium containing catalyst system carried on a lithium aluminate support under conditions for effecting ring hydrogenation.

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