Patents by Inventor Paul M. Westfall

Paul M. Westfall 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).

  • Soft, low density flexible polyurethane foam
    Patent number: 5500452
    Abstract: A flexible polyurethane foam formulation comprising a first polyol, a second polyol, an unhindered primary diamine or its corresponding carbamate, a diol, water, at least one catalyst, a foam stabilizer and isocyanate is disclosed. No auxiliary blowing agent is required. The resulting soft foams have densities of less than about 2 pcf and 25% IFD values of less than about 10 pounds/50 sq. inches.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: March 19, 1996
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Otis M. Baker, Jr., Frank E. Critchfeld, Paul M. Westfall
  • Flexible polyurethane foams using chlorinated alkanes
    Patent number: 5395860
    Abstract: It has been discovered that particular flexible polyurethane foam formulations having a chlorinated alkane incorporated therein have the advantage of improved combustion resistance, but also unexpectedly the additional advantages of improved durability (dynamic fatigue), and better processing in terms of a delayed onset of gel. These results were surprisingly achieved with the use of a chlorinated alkane as the sole component to improve combustion resistance. Incorporation of as much as 34 parts of chlorinated alkane per hundred parts of polyol have been accomplished.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: March 7, 1995
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Siusun K. Leung, Frank E. Critchfield, Paul M. Westfall
  • Process for producing flexible polyurethane foam using hexahydro-s-triazine catalysts
    Patent number: 4902723
    Abstract: Hexahydro-s-triazines, and in particular hexamethylenetetramine (HMT), can be used in high water (5.0 or more parts per hundred parts of polyol) flexible polyurethane foams formulations in place of conventional gellation catalysts to produce open celled molded foams with excellent surfaces and with cores free of discoloration.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: February 20, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Otis M. Baker, Frank E. Critchfield, Paul M. Westfall
  • Process for the manufacture of low density, flexible polyurethane foams
    Patent number: 4883825
    Abstract: A process for the manufacture of low density flexible polymethane foam via a catalyzed reaction of a highly reactive, high ethylene oxide, high functionality polyol, a hydrophilic polyhydric compound, water and polyisocyanates.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: November 28, 1989
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Paul M. Westfall, Frank E. Critchfield, William A. Gill
  • Process for producing flexible polyurethane foam using hexahydro-S-triazine catalysts
    Patent number: 4814359
    Abstract: Hexahydro-s-triazines, and in particular hexamethylenetetramine (HMT), can be used in high water (5.0 or more parts per hundred parts of polyol) flexible polyurethane foams formulations in place of conventional gellation catalysts to produce open celled molded foams with excellent surfaces and with cores free of discoloration.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: March 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: Otis M. Baker, Frank E. Critchfield, Paul M. Westfall
  • Foamable composition
    Patent number: 4357428
    Abstract: A fast curing foamable composition useful for the production of fabric-like materials comprises a resin or latex formulation and a mixture of a highly ethoxylated alkylphenol, an alkali metal N-alkyl sulfosuccinamate and an alkali metal alkyl sulfate.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: November 2, 1982
    Assignee: Union Carbide Corporation
    Inventors: Stuart L. Watson, Paul M. Westfall
  • Foamable composition
    Patent number: 4325831
    Abstract: A fast curing foamable composition useful for the production of fabric-like materials comprises a resin or latex formulation and a mixture of a highly ethoxylated alkylphenol, an alkali metal N-alkyl sulfosuccinamate and an alkali metal alkyl sulfate.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: April 20, 1982
    Assignee: Union Carbide Corporation
    Inventors: Stuart L. Watson, Paul M. Westfall