Patents Examined by Henry Wu
  • Heterogeneous liquid phase catalytic process for the dehydration of monoethanolamine to ethylenimine
    Patent number: 9162221
    Abstract: A novel heterogeneous liquid phase catalytic process for dehydration of monoethanolamine to ethylenimine and water has been discovered. The process utilizes a novel catalyst made by modifying a cation exchange resin in the hydrogen ion form. The process using the catalyst is performed in a solution of monoethanolamine in a solvent.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: October 20, 2015
    Inventor: John Henry Walker