Patents by Inventor Lawrence E. Neil, Jr.

Lawrence E. Neil, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Stabilizer for bisphenols and process of using same
    Patent number: 4894486
    Abstract: Lactic, malic and glyceric acids have been found to be superior to the hydroxy acids here-to-fore employed for the stabilization of bisphenols. These hydroxy carboxylic acids or their ammonium or alkali metal salts can be added to the feed reactants used to make the bisphenols or to the reaction mixture after the reaction is complete or at any point in between. They are particularly useful when the bisphenol is exposed to high temperatures, e.g. during the separation of the bisphenol from the reaction mixture or in a melt.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: January 16, 1990
    Assignee: The Dow Chemical Company
    Inventors: Lawrence E. Neil, Jr., Theodore J. Gormanos