Patents Represented by Attorney Riggs. T. Steward

Find this attorney in the Justia Lawyer Directory

  • Process for producing ethylene glycol via catalytic hydrogenation of glycolaldehyde
    Patent number: 4317946
    Abstract: A process is provided for catalytic hydrogenation of glycolaldehyde to form ethylene glycol in liquid phase employing a homogeneous ruthenium carboxylate complex catalyst system. Ethylene glycol is produced in excellent yields and selectivities and the process permits use of mild temperature and pressure conditions. The formation of acetals is greatly minimized as compared to prior art ruthenium catalysts.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: March 2, 1982
    Assignee: The Halcon SD Group, Inc.
    Inventor: Lawrence C. Costa