Patents by Inventor Jeffrey J. Lear

Jeffrey J. Lear 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).

  • Method for decreasing the propensity for phase-out of the high molecular weight component of double metal cyanide-catalyzed high secondary hydroxyl polyoxypropylene polyols
    Patent number: 6083420
    Abstract: During polyoxyalkylation in the presence of certain double metal cyanide catalysts, a very high molecular weight hydrophobic fraction, i.e. a "tail", is produced during preparation of high secondary hydroxyl polyols which is believed to contribute to foam collapse in polyurethane foam formulations. The processing latitude of such foams may be improved by altering the hydrophile/lipophile balance of the high molecular weight tail by oxyalkylating with a mixture of ethylene oxide and higher alkylene oxide during the greatest portion of total oxyalkylation such that essentially pure higher alkylene oxide is present in a terminal portion of oxyalkylation not exceeding 15 weight percent of total polyol weight.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: July 4, 2000
    Assignee: Bayer Antwerp N.V.
    Inventors: Jeffrey J. Lear, Oliver D. Sloan, Jose F. Pazos
  • Method for decreasing the propensity for phase-out of the high molecular weight component of double metal cyanide-catalyzed high secondary hydroxyl polyoxypropylene polyols
    Patent number: 5958994
    Abstract: During polyoxyalkylation in the presence of certain double metal cyanide catalysts, a very high molecular weight hydrophobic fraction, i.e. a "tail", is produced during preparation of high secondary hydroxyl polyols which is believed to contribute to foam collapse in polyurethane foam formulations. The processing latitude of such foams may be improved by altering the hydrophile/lipophile balance of the high molecular weight tail by oxyalkylating with a mixture of ethylene oxide and higher alkylene oxide during the greatest portion of total oxyalkylation such that essentially pure higher alkylene oxide is present in a terminal portion of oxyalkylation not exceeding 15 weight percent of total polyol weight.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: September 28, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Jeffrey J. Lear, Oliver D. Sloan, Jose F. Pazos
  • Methods for admixing compressed fluids with solvent-borne compositions comprising solid polymers
    Patent number: 5312862
    Abstract: Methods are presented by which compressed fluids such as carbon dioxide, nitrous oxide, and ethane can be admixed with solvent-borne compositions that contain a high concentration of solid polymer, such as coating compositions, whereby precipitation of the solid polymer can be avoided, thereby preventing plugging of the mixing apparatus.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: May 17, 1994
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Kenneth A. Nielsen, Jeffrey J. Lear, John N. Argyropoulos, Alex Chia-Huei Kuo
  • Monodispersed acrylic polymers in supercritical, near supercritical and subcritical fluids
    Patent number: 5212229
    Abstract: A coating composition low in volatile organic solvents comprising a monodispersed acrylic polymer solutions containing supercritical, near supercritical or subcritical fluids as a diluent therein. Desirably, the monodispersed acrylic polymer has a molecular weight such that it is, as such, a polymeric coating vehicle.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: May 18, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: James W. Taylor, John N. Argyropoulos, Jeffrey J. Lear