Patents by Inventor NOVA Chemicals ((International) S.A.

NOVA Chemicals ((International) S.A. 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).

  • Passivated Supports for Use with Olefin Polymerization Catalysts
    Publication number: 20130172500
    Abstract: A phosphinimine catalyst immobilized on a passivated inorganic oxide support, had high activity at low co-catalyst concentrations and gave, under gas phase polymerization conditions, ethylene copolymer with a high molecular weight. A method of making a passivated silica support involves treatment of silica with an organoaluminum compound, a diorganomagnesium compound and a source of chloride (to make MgCl2) under anhydrous conditions and in the absence of polar solvents.
    Type: Application
    Filed: November 21, 2012
    Publication date: July 4, 2013
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventor: NOVA Chemicals ((International) S.A.