Patents by Inventor Joseph A. Colquhoun

Joseph A. Colquhoun 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).

  • Radiation-curable coating compositions comprising mercaptoalkyl silicone and vinyl monomer, method of coating therewith and coated article
    Patent number: 4070526
    Abstract: Fluid compositions are disclosed which are useful as coatings on solid substrates. The compositions comprise a mercaptoalkyl-substituted polydiorganosiloxane fluid and a vinyl monomer. The compositions may further comprise a methylvinylpolysiloxane and/or a photosensitizing compound. The compositions, applied and cured on a substrate such as paper, provide improved release of adhesive materials.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: January 24, 1978
    Assignee: Dow Corning Corporation
    Inventors: Joseph A. Colquhoun, Robert E. Kalinowski
  • Method of modifying the physical properties of urethane elastomers
    Patent number: 4057595
    Abstract: A method of modifying the physical properties of urethane elastomers so that the properties of the urethane are enhanced.The method involves reacting a specific siloxane-polyoxyalkylene into a urethane elastomer.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: November 8, 1977
    Assignee: Dow Corning Corporation
    Inventors: Lawrence A. Rauner, Joseph A. Colquhoun
  • Method of obtaining release of polyurethane polymers and compositions therefor
    Patent number: 4052495
    Abstract: A method of obtaining release of polyurethane polymers from various substrates is disclosed. Compositions which are specifically described siloxane-polyoxyalkylene copolymers give release properties to cured polyurethane polymers.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: October 4, 1977
    Assignee: Dow Corning Corporation
    Inventors: John G. Uhlmann, Joseph A. Colquhoun
  • Radiation-curable mercaptoalkyl vinyl polydiorganosiloxanes, method of coating there with and coated article
    Patent number: 4052529
    Abstract: Certain polydiorganosiloxane compositions bearing mercaptoalkyl radicals and vinyl radicals are disclosed which cure in the presence of radiation such as ultraviolet light. The compositions consist essentially of a mixture of a triorganosiloxane-endblocked polydiorganosiloxane fluid in which from 1 to 5 percent of the organic radicals are mercaptoalkyl radicals and a methylvinylpolysiloxane. The compositions may be applied to a substrate such as paper and exposed to radiation to prepare a coated substrate that provides premium release of aggressive acrylic adhesives.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: October 4, 1977
    Assignee: Dow Corning Corporation
    Inventors: Gary N. Bokerman, Joseph A. Colquhoun, David J. Gordon