Patents by Inventor Behrooz R. Tabar

Behrooz R. Tabar 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).

  • Direct synthesis by living cationic polymerization of nitrogen-containing polymers
    Patent number: 5629394
    Abstract: A method is provided for the direct synthesis by living cationic polymerization of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino, cyanato, thiocyanato or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 13, 1997
    Assignee: Exxon Chemical Patents Inc
    Inventors: Herve M. Cheradame, Frank J. Chen, Jon E. R. Stanat, Hung A. Nguyen, Behrooz R. Tabar
  • Direct synthesis by living cationic polymerization of nitrogen-containing polymers
    Patent number: 5444135
    Abstract: A method is provided for the direct synthesis by living cationic polymerization of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino, cyanato, thiocyanato or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: August 22, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Herve M. Cheradame, Frank J. Chen, Jon E. R. Stanat, Hung A. Nguyen, Behrooz R. Tabar