Patents by Inventor John W. Liddle

John W. Liddle 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).

  • Rigid polyurethane foams with increased heat performance
    Patent number: 7601761
    Abstract: The present invention provides a rigid polyurethane foam made from the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate, and a polyol component containing about 20 to about 80 wt. %, based on the weight of the polyol component, of a double metal cyanide (DMC)-catalyzed polyether polyol having a number average molecular weight of greater than about 1000 Daltons (Da), about 80 to about 20 wt. %, based on the weight of the polyol component, of a sucrose-based polyol having a functionality of from about 2.5 to about 6 and a molecular weight of from about 350 to less than about 1,000, and about 0 to about 40 wt. %, based on the weight of the polyol component, of a low molecular weight organic compound having a number average molecular weight of less than about 600 Da, in the presence of water, polyvinylchloride (PVC) particles having a diameter of from about 0.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: October 13, 2009
    Assignee: Bayer MaterialScience LLC
    Inventors: Jan L. Clatty, Timothy R. Whelan, Susanne Whelan, legal representative, Michael T. Wellman, John W. Liddle, Marie W. Urick
  • Rigid polyurethane foams with increased heat performance
    Publication number: 20080207787
    Abstract: The present invention provides a rigid polyurethane foam made from the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate, and a polyol component containing about 20 to about 80 wt. %, based on the weight of the polyol component, of a double metal cyanide (DMC)-catalyzed polyether polyol having a number average molecular weight of greater than about 1000 Daltons (Da), about 80 to about 20 wt. %, based on the weight of the polyol component, of a sucrose-based polyol having a functionality of from about 2.5 to about 6 and a molecular weight of from about 350 to less than about 1,000, and about 0 to about 40 wt. %, based on the weight of the polyol component, of a low molecular weight organic compound having a number average molecular weight of less than about 600 Da, in the presence of water, polyvinylchloride (PVC) particles having a diameter of from about 0.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 28, 2008
    Inventors: Jan L. Clatty, Timothy R. Whelan, Michael T. Wellman, John W. Liddle, Marie W. Urick, Susanne Whelan