Patents by Inventor Van I. W. Stuart

Van I. W. Stuart 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).

  • Latent catalysts for epoxy-containing compounds
    Patent number: 4946817
    Abstract: Latent catalysts for epoxy reactions are prepared by reacting a tetrasubstituted onium compound such as tetrabutylphosphonium acetate acetic acid complex with an acid or metal salt of an acid having a weak-nucleophilic anion such as fluoboric acid. These catalysts provide stable latent catalysts for epoxy resins for advancement or curing reactions.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: August 7, 1990
    Assignee: The Dow Chemical Company
    Inventors: James L. Bertram, Louis L. Walker, Van I. W. Stuart
  • Latent catalysts for epoxy reactions
    Patent number: 4725652
    Abstract: Latent catalysts for epoxy reactions are prepared by reacting a tetrasubstituted onium compound such as tetrabutylphosphonium acetate.acetic acid complex or an amine compound with an acid having a weak-nucleophilic anion such as fluoboric acid. These catalysts provide stable latent catalysts for epoxy resins for advancement or curing reactions.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: February 16, 1988
    Assignee: The Dow Chemical Company
    Inventors: James L. Bertram, Louis L. Walker, Van I. W. Stuart
  • Blends of polypropylene and vinylaromatic/.alpha.-methylstyrene copolymers
    Patent number: 4704431
    Abstract: A polymer resin comprising a blend of polypropylene, a copolymer of a vinylaromatic monomer and .alpha.-methylstyrene prepared by anionic polymerization at a temperature above 61.degree. C. and a monovinylidene aromatic polymer grafted .alpha.-olefin copolymer compatibilizing agent.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: November 3, 1987
    Assignee: The Dow Chemical Company
    Inventors: Van I. W. Stuart, Duane B. Priddy
  • Aminoalkyl hydantoins and glycidyl derivatives thereof
    Patent number: 4691021
    Abstract: Novel aminoalkyl hydantoins and glycidyl derivatives thereof are prepared from previously unknown 3-(amidoalkyl) hydantoins.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: September 1, 1987
    Assignee: The Dow Chemical Company
    Inventors: Pen C. Wang, Van I. W. Stuart, Ronald L. Yates, Steven P. Crain