Patents by Inventor W. Tracy Estabrook

W. Tracy Estabrook 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).

  • Polyurethane geotextile composite liner with improved water resistance and a process for the production thereof
    Patent number: 6669407
    Abstract: A water-resistant polyurethane geotextile composite suitable for use as a liner is made by impregnating a geotextile with a water-resistant polyurethane and allowing the polyurethane impregnated in the geotextile to cure. The water-resistant polyurethane composition is a reaction product of (a) a liquid polyisocyanate having an isocyanate content of at least 10% by weight, (b) an isocyanate-reactive component which includes (1) 20-90% by weight castor oil having a water content of less than 0.5% by weight, and (2) a polyether polyol in which at least 70% by weight of the alkylene oxide is propylene oxide, and (c) a urethane catalyst. Low molecular weight diols and triols and fillers may optionally be included.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: December 30, 2003
    Assignee: Bayer Corporation
    Inventors: Peter H. Markusch, Ashok Sarpeshkar, Marylyn Donaldson, W. Tracy Estabrook, Ralf Guether
  • Polyurethane geotextile composite liner with improved water resistance and a process for the production thereof
    Publication number: 20020172565
    Abstract: A water-resistant polyurethane geotextile composite suitable for use as a liner is made by impregnating a geotextile with a water-resistant polyurethane and allowing the polyurethane impregnated in the geotextile to cure. The water-resistant polyurethane composition is a reaction product of (a) a liquid polyisocyanate having an isocyanate content of at least 10% by weight, (b) an isocyanate-reactive component which includes (1) 20-90% by weight castor oil having a water content of less than 0.5% by weight, and (2) a polyether polyol in which at least 70% by weight of the alkylene oxide is propylene oxide, and (c) a urethane catalyst. Low molecular weight diols and triols and fillers may optionally be included.
    Type: Application
    Filed: March 15, 2001
    Publication date: November 21, 2002
    Inventors: Peter H. Markusch, Ashok Sarpeshkar, Marylyn Donaldson, W. Tracy Estabrook, Ralf Guether