Patents Assigned to Organisation Nationale Interprofessionnelle des Oleagineux (O.N.I.D.OL.)
  • Method for preparing glycerol carbonate
    Patent number: 6025504
    Abstract: The invention concerns a method for preparing glycerol carbonate. This method consists of making urea and glycerol react at a temperature substantially between 90.degree. C. and 220.degree. C. in the presence of a catalyst bearing Lewis acid sites, in particular metallic or organometallic salts or supported metallic compounds. The invention enables glycerol carbonate to be obtained, by a catalytic carbamoylation/carbonation reaction, in a highly pure state under economic conditions.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: February 15, 2000
    Assignee: Organisation Nationale Interprofessionnelle des Oleagineux (O.N.I.D.OL.)
    Inventors: Sylvain Claude, Zephirin Mouloungui, Jeong-Woo Yoo, Antoine Gaset