Patents by Inventor Virginia B. Messick

Virginia B. Messick 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).

  • Polymer-modified vinylized epoxy resins
    Patent number: 5055532
    Abstract: Vinylized epoxy resins, such as vinyl ester resins, comprise polymerizable ethylenic unsaturation and an in situ polymerized polymer, such as a polyalkyl acrylate. The vinylized epoxy resins can form stable dispersions and are useful in thermoset applications.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: October 8, 1991
    Assignee: The Dow Chemical Company
    Inventors: Dwight K. Hoffman, Virginia B. Messick, Michael G. Stevens
  • Polymer modified vinyl ester resin compositions
    Patent number: 4719268
    Abstract: Polymer modified vinyl ester resin compositions are disclosed which comprise (I) a polymer modified epoxy resin which comprises (A) an epoxy resin wherein a portion of the epoxide groups have been reacted to provide groups containing polymerizable ethylenic unsaturation; (B) at least one vinyl terminated urethane oligomer and optionally (C) at least one polymerizable ethylenically unsaturated compound and (II) a monounsaturated monocarboxylic acid or mixture of such acids.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: January 12, 1988
    Assignee: The Dow Chemical Company
    Inventors: Robert E. Hefner, Jr., Virginia B. Messick
  • Polymer-modified vinylized epoxy resins
    Patent number: 4690988
    Abstract: Vinylized epoxy resins, such as vinyl ester resins, comprise polymerizable ethylenic unsaturation and an in situ polymerized polymer, such as a polyalkyl acrylate. The vinylized epoxy resins can form stable dispersions and are useful in thermoset applications.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: September 1, 1987
    Assignee: The Dow Chemical Company
    Inventors: Dwight K. Hoffman, Michael G. Stevens, Virginia B. Messick
  • Polymer modified epoxy resin compositions
    Patent number: 4618658
    Abstract: Polymer modified epoxy resin compositions are disclosed which comprise (A) an epoxy resin wherein a portion of the epoxide groups have been reacted to provide groups containing polymerizable ethylenic unsaturation; (B) at least one vinyl terminated urethane oligomer and optionally (C) at least one polymerizable ethylenically unsaturated compound. These compositions are useful as intermediates to novel polymer modified vinyl esters and thermoset (cured) products.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: October 21, 1986
    Assignee: The Dow Chemical Company
    Inventors: Robert E. Hefner, Jr., Virginia B. Messick
  • Oxalic acid stabilized thermosettable vinyl ester resins
    Patent number: 4407991
    Abstract: Oxalic acid, alone or in combination with phenothiazine or with phenothiazine and 4-chloro-2-nitrophenol, increases the storage life of vinyl ester resins or unsaturated polyesters without adversely suppressing the exotherm or affecting their curability.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: October 4, 1983
    Assignee: The Dow Chemical Company
    Inventor: Virginia B. Messick
  • Nitric acid stabilized thermosettable resins
    Patent number: 4336359
    Abstract: Nitric acid, alone or in combination with phenothiazine, increases the storage life of vinyl ester resins or unsaturated polyesters without adversely suppressing the exotherm or affecting their curability.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: June 22, 1982
    Assignee: The Dow Chemical Company
    Inventor: Virginia B. Messick