Patents Represented by Attorney D. L. Hedden

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  • Method for making a storage stable blend of a long chain polyol and a short chain diol by incorporating a phenyl therein and the resulting blend
    Patent number: 4786435
    Abstract: Disclosed is a storage stable blend of a long chain polyol and a short chain diol wherein the diol is present in an amount whereby the diol and polyol form an incompatible blend. The blend is rendered storage stable by the addition of a compatibilizing amount of a phenol.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: November 22, 1988
    Assignee: Ashland Oil, Inc.
    Inventor: Timothy A. Tufts
  • Thermoset polymer compositions
    Patent number: 4771102
    Abstract: Thermoset polymers are prepared by reacting an ethylenically unsaturated resin monomer and a bicyclic amide acetal with a polyisocyanate in the absence or presence of a vinyl monomer. Reaction rates are suitable for effecting RIM processing. The resultant polymers exhibit improved impact resistance. Further variation in physical properties can be achieved through the use of a diol chain extender for the polyisocyanate.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: September 13, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: Anil B. Goel, Timothy A. Tufts, Joseph G. Holehouse
  • Thermosetting molding compounds
    Patent number: 4758400
    Abstract: Fiber reinforced molding compounds wherein the resinous matrix is a thermosetting linear polymer characterized in constituting two oligomeric ethylenically unsaturated polyester segments joined through a polyurethane residue and having acryloyl or methacryloyl end groups.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: July 19, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: William R. Dunnavant, Gilbert M. Gynn, Richard E. Field
  • Thermoset polymer compositions
    Patent number: 4757115
    Abstract: Thermoset polymers are prepared by reacting an ethylenically unsaturated resin monomer and a bicyclic amide acetal with a polyisocyanate in the absence or presence of a vinyl monomer. Reaction rates are suitable for effecting RIM processing. The resultant polymers exhibit improved impact resistance. Further variation in physical properties can be achieved through the use of a diol chain extender for the polyisocyanate.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: July 12, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: Anil B. Goel, Timothy A. Tufts, Joseph G. Holehouse
  • Storage stable polyol compositions
    Patent number: 4755321
    Abstract: Disclosed is a storage stable blend of a long chain polyol and a short chain glycol wherein the glycol is present in an amount whereby the glycol and polyol form an incompatible blend. The blend is rendered storage stable by the addition of a compatibilizing amount of a salt wherein the salt is formed from a metal having a charge density of from about 1.25 to about 1.45.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: July 5, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: Christopher T. Moss, Gary E. Kimes, Timothy A. Tufts