Patents Examined by Y. Garner
  • Process for the production of carbonate esters
    Patent number: 5183918
    Abstract: The invention relates to a process of producing carbonate esters wherein an alkyl chloroformate is reacted with a phenolsulfonate in an alkaline medium and discloses the improvement whereby dialkylcarbonate formation is reduced by adding an acidifying agent to the reaction mixture after the reaction and before precipitation of the alkylsulfophenyl carbonate.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: February 2, 1993
    Assignee: Monsanto Company
    Inventors: Frank P. Jakse, Donald E. Morris, William Vanderlinde