Patents by Inventor Wayne R. Willkomm

Wayne R. Willkomm 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).

  • Continuous process for preparing a polyurethane latex
    Patent number: 6087440
    Abstract: A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high solids (between about 65% and 74% solids) latex of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: July 11, 2000
    Assignee: The Dow Chemical Company
    Inventors: Kenneth W. Skaggs, Rick L. Tabor, Paul T. Louks, Wayne R. Willkomm
  • Continuous process for preparing a polyurethane latex
    Patent number: 5959027
    Abstract: A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high internal phase ratio (HIPR) emulsion of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: September 28, 1999
    Assignee: The Dow Chemical Company
    Inventors: James J. Jakubowski, Wayne R. Willkomm, James E. Pate, III
  • Polymer polyols containing halogenated aromatic monomers and polyurethane foam made therefrom
    Patent number: 5824712
    Abstract: A polymer polyol is produced by a process comprising free radical polymerizing an addition polymerizable di-(substituted phenyl)monomer (e.g., methacrylic ester of diglycidylether of tetrabromobisphenol A) component in the presence of a polyol, wherein the monomer has at least one aromatic halogen and at least one aromatic ethylenically unsaturated substituent. The polymer polyol can also be made by copolymerizing said monomer with an additional ethylenically unsaturated monomer component such as styrene and acrylonitrile. Said polymer polyols are reacted with a polyisocyanate compound forming a flame retardant polyurethane foam.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: October 20, 1998
    Assignee: The Dow Chemical Company
    Inventors: Wayne R. Willkomm, Kenneth J. Hinze, Ruben Solis
  • Polymer polyols containing halogenated aromatic monomers and polyurethane foam made therefrom
    Patent number: 5741847
    Abstract: A polymer polyol is produced by a process comprising free radical polymerizing an addition polymerizable di-(substituted phenyl)monomer (e.g., methacrylic ester of diglycidylether of tetrabromobisphenol A) component in the presence of a polyol, wherein the monomer has at least one aromatic halogen and at least one aromatic ethylenically unsaturated substituent. The polymer polyol can also be made by copolymerizing said monomer with an additional ethylenically unsaturated monomer component such as styrene and acrylonitrile. Said polymer polyols are reacted with a polyisocyanate compound forming a flame retardant polyurethane foam.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: April 21, 1998
    Assignee: The Dow Chemical Company
    Inventors: Wayne R. Willkomm, Ruben Solis, Kenneth J. Hinze