Patents Assigned to Jim Walter Research Corp.
  • Rigid foam with improved "K" factor by reacting a polyisocyanate and polyester polyol containing low free glycol
    Patent number: 5109031
    Abstract: Rigid cellular polymers are made by reacting an organic polyisocyanate with a polyol component comprising a polyester polyol having a free glycol content of less than about 7 percent by weight of the polyester polyol in the presence of a blowing agent. The use of the polyester polyol enhances the thermal insulating properties of the foams.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: April 28, 1992
    Assignee: Jim Walter Research Corp.
    Inventor: Scott C. Snider
  • Rigid foam with improved "k" factor by reacting a polyisocyanate prepolymer and polyester polyol containing low free glycol
    Patent number: 5064873
    Abstract: Rigid cellular polymers are made by reacting an isocyanate-terminated quasi-prepolymer with a polyol component comprising a polyester polyol having a free glycol content of less than about 7 percent by weight of the polyester polyol in the presence of a blowing agent. The combined use of the quasi-prepolymer and the polyester polyol enhances the thermal insulating properties of the foams.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: November 12, 1991
    Assignee: Jim Walter Research Corp.
    Inventors: Scott C. Snider, Michael E. Londrigan, Kenneth G. Trout
  • Rigid foam with improved "K" factor from perfluorinated hydrocarbons
    Patent number: 4981879
    Abstract: This invention relates to a process for preparing cellular polymers having urethane groups, isocyanurate groups, or both. The cellular polymers are prepared by reacting an organic polyisocyanate with a polyol in the presence of a blowing agent, a catalyst, and a perfluorinated hydrocarbon or a mixture of perfluorinated hydrocarbons. The use of the perfluorinated additives enhances the thermal insulating properties of the forms.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: January 1, 1991
    Assignee: Jim Walter Research Corp.
    Inventor: Scott C. Snider
  • Isocyanate-carboxyl group-containing fatty compounds for manufacture of lignocellulosic composites
    Patent number: 4933232
    Abstract: A binder/release system for the preparation of molded articles, especially lignocellulosic composites, which utilizes in combination with isocyanate-based binders a fatty material as an internal and/or external release agent, the fatty material being at least one polymerized fatty acid and/or at least one polycarboxyl compound containing a polymeric fatty radical(s).
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: June 12, 1990
    Assignee: Jim Walter Research Corp.
    Inventors: Kenneth G. Trout, George A. Grozdits, Ernest K. Moss, James F. Daly
  • Isocyanate-polyester polyol binder for manufacture of cellulosic composites
    Patent number: 4833182
    Abstract: A binder for use in the preparation of a synthetic board from cellulosic and/or lignocellulosic material comprising an organic polyisocyanate and a polyester polyol, especially an aromatic polyester polyol.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: May 23, 1989
    Assignee: Jim Walter Research Corp.
    Inventors: Michael G. Israel, George A. Grozdits, Ernest K. Moss
  • Isocyanate-carboxyl group-containing fatty compounds for manufacture of lignocellulosic composites
    Patent number: 4772442
    Abstract: A binder/release system for the preparation of molded articles, especially lignocellulosic composites, which utilizes in combination with isocyanate-based binders a fatty material as an internal and/or external release agent, the fatty material being at least one polymerized fatty acid and/or at least one polycarboxyl compound containing a polymeric fatty radical(s).
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: September 20, 1988
    Assignee: Jim Walter Research Corp.
    Inventors: Kenneth G. Trout, George A. Grozdits, Ernest K. Moss, James F. Daly
  • Binder composition for manufacture of fiberboard
    Patent number: 4752637
    Abstract: A binder for use in the preparation of a synthetic board from cellulosic and/or lignocellulosic material comprising an organic polyisocyanate and a mixture of reactive hydrogen-containing compounds having an average of more than one reactive hydrogen atom per molecule, the mixture containing an ester and/or an amide having a hydrocarbon content sufficient to bring about enhanced board release in the board-forming process and to contribute to superior moisture resistance in the finished board.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: June 21, 1988
    Assignee: Jim Walter Research Corp.
    Inventor: Michael G. Israel
  • Binder composition for manufacture of fiberboard
    Patent number: 4609513
    Abstract: A binder for use in the preparation of a synthetic board from cellulosic and/or lignocellulosic material comprising an organic polyisocyanate and a mixture of reactive hydrogen-containing compounds having an average of more than one reactive hydrogen atom per molecule, the mixture containing an ester and/or an amide having a hydrocarbon content sufficient to bring about enhanced board release in the board-forming process and to contribute to superior moisture resistance in the finished board.
    Type: Grant
    Filed: August 15, 1984
    Date of Patent: September 2, 1986
    Assignee: Jim Walter Research Corp.
    Inventor: Michael G. Israel