Patents by Inventor Thomas W. Bodnar

Thomas W. Bodnar 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).

  • Carboxylic acid modified carbon dioxide co-blown polyurethane-polyisocyanurate foams
    Patent number: 5143945
    Abstract: Disclosed are rigid polyurethane-polyisocyanurate foams prepared from polyisocyanates, polyols, trimer catalysts and a blowing agent mixture comprising (i) a halocarbon, and (ii) an organic carboxylic acid, and, optionally water.The foams have excellent aged K-factor values at fluorocarbon levels reduced by up to 75 percent over prior art materials.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: September 1, 1992
    Assignee: The Dow Chemical Company
    Inventors: Thomas W. Bodnar, Leslie A. Cole, Shenghong A. Dai