Patents by Inventor Timothy J. Kettering

Timothy J. Kettering 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: 5438093
    Abstract: Solution and RIM polymerization of cycloolefins containing at least one norbornene moiety is carried out in the presence of a methathesis catalyst system and an activator, particularly a chlorosilane activator, to obtain faster reaction with higher conversions at lower mold temperatures. The methathesis catalyst system includes an organoammonium molybdate or tungstate catalyst and an alkylaluminum or an alkylaluminum halide cocatalyst. The chlorosilane activator is used at a level of 0.05 to 10 millimoles per mole of the cycloolefin monomers. The polymers of cycloolefins can be impact modified and/or flame-retarded.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: August 1, 1995
    Assignee: B. F. Goodrich Company
    Inventors: Paul T. Stricharczuk, Robert J. Minchak, Timothy J. Kettering, Dennis J. Janda, Glen R. Gribble, Jr.
  • Patent number: 5190808
    Abstract: Copolymers for use in preparing prepregs, which in turn are used to prepare printed circuit wiring boards are provided, as well as processes for producing the prepregs and wiring boards. The copolymers comprise repeating units derived from cycloolefin monomers, e.g., norbornene-type monomers, e.g., dicyclopentadiene-type monomers. Some of the monomers are silane-substituted while others are non silane-substituted. The silane-substituted monomers provide copolymers which exhibit improved properties when employed as the copolymers in prepregs for printed circuit wiring boards. For example, improved adhesion is achieved between the noncellulosic substrate and the polymers of components used in the wiring boards. These properties include, but are not limited to improved dielectric properties, improved adhesion to glass cloth substrates, etc.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: March 2, 1993
    Assignee: B. F. Goodrich Company
    Inventors: Linwood P. Tenney, Timothy J. Kettering, Robert J. Minchak, George M. Benedikt, David J. Smith
  • Patent number: 5071701
    Abstract: Copolymers for use in preparing prepregs, which in turn are used to prepare printed circuit wiring boards are provided, as well as processes for producing the prepregs and wiring boards. The copolymers comprise repeating units derived from cycloolefin monomers, e.g., norbornene-type monomers, e.g., dicyclopentadiene-type monomers. Some of the monomers are silane-substituted while others are non silane-substituted. The silane-substituted monomers provide copolymers which exhibit improved properties when employed as the copolymers in prepregs for printed circuit wiring boards. For example, improved adhesion is achieved between the noncellulosic substrate and the polymers of components used in the wiring boards. These properties include, but are not limited to improved dielectric properties, improved adhesion to glass cloth substrates, etc.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: December 10, 1991
    Assignee: B. F. Goodrich Corporation
    Inventors: Linwood P. Tenney, Timothy J. Kettering, Robert J. Minchak, George M. Benedikt, David J. Smith
  • Patent number: 4380617
    Abstract: Process for polymerizing by ring opening polymerization of a norbornene-type monomer, or a mixture thereof, with or without at least one other polymerizable monomer, in presence of an alkylaluminum halide cocatalyst and an organoammonium molybdate or tungstate catalyst that is soluble in a hydrocarbon reaction solvent and the norbornene-type monomer.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: April 19, 1983
    Assignee: The B. F. Goodrich Company
    Inventors: Robert J. Minchak, Timothy J. Kettering, William J. Kroenke