Patents by Inventor Constantine J. Bouboulis

Constantine J. Bouboulis 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).

  • Patent number: 4739006
    Abstract: According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 18 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: April 19, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis
  • Patent number: 4638031
    Abstract: According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 18 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: January 20, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis
  • Patent number: 4593080
    Abstract: According to the present invention, an improved method for providing acrylic copolymer resins is provided in which the polymerization solvent comprises a blend of methyl isobutyl ketone and certain alkyl-substituted benzene solvents. The monomers comprise hydroxy-substituted alkyl (meth)acrylate monomers and non-hydroxy substituted alkyl (meth)acrylate monomers, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in acrylic coatings. The polymerization solvent can remain in the resin to become a solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides improved electrical resistivity, improved solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: October 24, 1984
    Date of Patent: June 3, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Constantine J. Bouboulis, Irving Kuntz
  • Patent number: 4532294
    Abstract: According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 12 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: July 30, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis
  • Patent number: 4501868
    Abstract: According to the present invention, an improved method for providing acrylic copolymer resins is provided in which the polymerization solvent comprises a blend of methyl isobutyl ketone and certain alkyl-substituted benzene solvents. The monomers comprise hydroxy-substituted alkyl (meth)acrylate monomers and non-hydroxy substituted alkyl (meth)acrylate monomers, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in acrylic coatings. The polymerization solvent can remain in the resin to become a solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides improved electrical resistivity, improved solvency and decreased surface tensions over prior art polymerization solvents.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: February 26, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Constantine J. Bouboulis, Irving Kuntz
  • Patent number: 3950310
    Abstract: Novel polyamides are prepared by reacting a dicarboxylic acid with 1,4-cyclohexane-bis(.beta.-ethylamine). Unique properties are obtained where the dicarboxylic acid is 1,4-cyclohexane diacetic acid. The polymers of this invention are distinguished from the prior art in that they exhibit unexpectedly high melting points and crystallinity. Thence they are suitable for use in fibers as well as molding and other general polyamide applications.
    Type: Grant
    Filed: February 23, 1972
    Date of Patent: April 13, 1976
    Assignee: Exxon Research & Engineering Co.
    Inventor: Constantine J. Bouboulis