Zwitterionic Catalyst for Olefin Polymerization

Tech ID: 21389 / UC Case 2006-268-0

Brief Description

A zwitterionic catalyst applicable to olefin polymerization.  


Olefin fibers (polypropylene, polyethylene) are products of the polymerization of propylene and ethylene gases. For the olefin fibers to be of use, polymerization must occur with a special catalyst in controlled conditions. Since the discovery of new transition metal-based catalysts for polymerization is still in its early stages, there is a need for catalysts in this field.


Researchers at the University of California, Santa Barbara have developed a zwitterionic catalyst applicable to olefin polymerization.  One novel feature of this catalyst is that the active species is stabilized by a chelated olefin adduct. The catalyst also provides methods of polymerizing olefin monomers, particularly polypropylene and high molecular weight polyethylene. Overall, this catalyst presents high activities, is stable, and resulting polyethylene and polypropylene products are high in molecular weight.

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 Please see U.S. patent #8,044,225 for a detailed description of the figures.



  • High activity level
  • High molecular weight polypropylene
  • Stable active species


  • Polyethylene production
  • Olefin Polymerization
  • Olefin Co-Polymerization
  • Polymer chemistry


This technology is available for licensing.

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 8,044,225 10/25/2011 2006-268



Other Information


Zwitterionic Catalyst, Olefin Polymerization, indchem

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