Patents Assigned to Oxamine, Inc.
  • Method of producing aminophenol using a rhodium/carbon catalyst with synergistic quantities of rhodium, trichloride or rhodium tribromide
    Patent number: 4051187
    Abstract: A semicontinuous or continuous process for producing para-aminophenols by the hydrogenation of corresponding nitrobenzenes wherein a catalyst containing about 5% platinum-group metal wherein about 10 to 80% of said platinum-group metal is in the form of RhCl.sub.3 and from 20 to 90% of said platinum-group metal is in the form of elemental Rh, Pd, Pt, or Ru and where the balance of said catalyst comprises carbon to convert substantially all of the nitrobenzene to a para-aminophenol in an aqueous phase containing the latter.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: September 27, 1977
    Assignee: Oxamine, Inc.
    Inventor: Eugene Medcalf