Patents by Inventor Harry V. DePaul

Harry V. DePaul 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).

  • Stabilization of halogenated polyols for polyurethane production
    Patent number: 4239642
    Abstract: The storage stability of otherwise unstable premix compositions for flame retardant rigid polyurethane foams containing in the premix a chlorinated polyether polyol and a tertiary amine catalyst, is enhanced by incorporation into the premix of a minor amount of a vinyl monomer. The preferred vinyl monomers employed are condensation products of acrylic or methacrylic acid with alcohols or amines. Such stabilization prevents premature deactivation of the tertiary amine catalysts contained in the premix.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: December 16, 1980
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Harry V. DePaul, John R. Panchak
  • Stabilization of flame retardant premix for polyurethane
    Patent number: 4225453
    Abstract: The storage stability of otherwise unstable premix compositions for flame retardant rigid polyurethane foams containing in the premix a chlorinated polyether polyol and a tertiary amine catalyst, is enhanced by incorporation into the premix a synergistic combination of an organic sulfur compound and an unsaturated carbon compound. The preferred sulfur compound is thiourea; among the preferred unsaturated carbon compounds are unsaturated terpenes such as allo-ocimene and unsaturated higher fatty acids such as tall oil fatty acids and mono-, di-, and trienic C.sub.18 acids.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: September 30, 1980
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Harry V. DePaul, David C. Fondots, Rocco L. Mascioli, John R. Panchak