Patents by Inventor Elliot Eisenbach

Elliot Eisenbach 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).

  • Novel composition for preparing urethane/urea block copolymers
    Patent number: 4195150
    Abstract: The reaction between an isocyanate-terminated prepolymer and an aromatic diamine to form an elastomeric urethane-urea copolymer is accelerated using a quaternary ammonium compound as the catalyst. The quaternary ammonium compound is optionally employed in combination with a mono- or polyfunctional carboxylic acid containing from 4 to 20 carbon atoms.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: March 25, 1980
    Assignee: M & T Chemicals Inc.
    Inventors: Vincent J. Gajewski, Elliot Eisenbach
  • Composition for preparing urethane/urea block copolymers
    Patent number: 4155894
    Abstract: The maximum concentration of specified sulfur-containing diamines that can be dissolved in polyols employed to prepare elastomeric urethane/urea block copolymers is significantly increased by the addition to said polyols of from 1 to 10% by weight of specified aprotic organic solvents containing oxygen, sulfur or both of these elements.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: May 22, 1979
    Assignee: M&T Chemicals Inc.
    Inventors: Vincent J. Gajewski, Gabriel Karoly, Elliot Eisenbach