Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1989-12-18
1991-03-26
Hollrah, Glennon H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564479, 564480, 564506, 502305, C07C21304
Patent
active
050031074
ABSTRACT:
Poly(oxytetramethylene) diamines useful in the preparation of polyamide and polyurea elastomers are prepared by the catalytic reductive amination of a poly(oxytetramethylene) glycol feedstock under reductive amination conditions in the presence of ammonia and hydrogen using a hydrogenation/dehydrogenation catalyst composed of, on an oxide-free basis, about 70 to 75 wt. % of nickel, about 20 to about 25 wt. % of copper, about 0.5 to 5 wt. % of chromium and about 1 to 5 wt. % of molybdenum.
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Larkin John M.
Zimmerman Robert L.
Hollrah Glennon H.
Park Jack H.
Priem Kenneth R.
Ries Carl G.
Russell Mark W.
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