Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1998-09-25
2000-06-13
Barts, Samuel
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564451, C07C20900
Patent
active
060751673
ABSTRACT:
This invention relates to a method for preparing cycloaliphatic diamines by hydrogenating aromatic diamines in the presence of a supported ruthenium catalyst and a metal nitrite as a catalyst promoter to increase the rate of the hydrogenation reaction and decrease the amount of higher boiler by-products.
REFERENCES:
patent: 4394299 (1983-07-01), Puskas et al.
Chung Moon Jo
Kim Hoon Sik
Kwon Young Soo
Lee Byung Gwon
Park Kun Yu
Barts Samuel
Korea Institute of Science and Technology
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