Daniel John Janitor

61913103, Feb 20, 2001

Nov 17, 1999

9/442235

John Frederik Knifton - Houston TX
Daniel John Janitor - Houston TX

Shell Oil Company - Houston TX

C07C20900

564479

Disclosed is a process for selectively producing diaminoalkanes which comprises reacting a dihydric alcohol characterized by two to six carbons, preferably 1,3-propanediol, with excess ammonia and sufficient hydrogen to stabilize a nickel or cobalt-containing hydroamination catalyst, at a temperature of at least 150. degree. C. and a pressure of at least 500 psig, until there is substantial formation of the desired diaminoalkane, wherein said catalyst comprises at least one metal selected from the group consisting of nickel and cobalt, or mixtures thereof, optionally in the presence of one or more promoters, but particularly molybdenum oxide.

61472611, Nov 14, 2000

Nov 17, 1999

9/442234

John Frederik Knifton - Houston TX
Daniel John Janitor - Houston TX

Shell Oil Corporation - Houston TX

C07C20916
C07C20926

564473

Disclosed is a process for producing diaminoalkanes which comprises reacting a hydroxyalkanal characterized by two to six carbons, preferably 3-hydroxypropanal, with excess ammonia and sufficient hydrogen to stabilize a nickel or cobalt-containing hydroamination catalyst, at a temperature of at least 50. degree. C. and a pressure of at least 500 psig, until there is substantial formation of the desired diaminoalkane, wherein said catalyst comprises at least one metal selected from the group consisting of nickel and cobalt, or mixtures thereof, optionally in the presence of one or more promoters.