Patents by Inventor Luis E. Reyes

Luis E. Reyes 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).

  • Method for stabilizing monovinylarene/conjugated diene copolymers and a method for preparing a stabilizing mixture
    Patent number: 5422389
    Abstract: A process for stabilizing polymers is provided comprising:(1) contacting at least one hindered phenolic compound and an organic phosphite to form a stabilizing mixture,wherein said contacting is at a temperature sufficient to at least partially dissolve said hindered phenolic compound,wherein said stabilizing mixture is essentially free of organic solvent; and(2) contacting said stabilizing mixture and a polymeric composition comprising a monovinylarene/conjugated diene copolymer;wherein said organic phosphite and said at least one hindered phenolic compound are present in step (2) in an effective amount sufficient to stabilize said polymeric composition. In accordance with another aspect of this invention a method for preparing a stabilizing mixture essentially free of organic solvent is provided.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: June 6, 1995
    Assignee: Phillips Petroleum Company
    Inventors: William J. Trepka, Larry L. Nash, John R. Bohannan, Nathan E. Stacy, George A. Moczygemba, Craig D. DePorter, Luis E. Reyes, Tad L. Olson