Hydrogenation of aromatic diamines

Details Hydrogenation of aromatic diamines Hydrogenation of aromatic diamines

1998-09-25

1999-11-09

Killos, Paul J.

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

Organic compounds

Amino nitrogen containing

564450, C07C20900

Patent

active

059818018

ABSTRACT:
This invention relates to a method for preparing cycloaliphatic diamines by hydrogenating an aromatic diamines in the presence of a supported ruthenium catalyst. The catalyst is pre-treated with oxygen or air to increase the rate of the reaction and decrease the amount of higher boiler by-products.

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