Patents by Inventor Matthew Gerald Kowalchuk

Matthew Gerald Kowalchuk 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).

  • Halogenated organic particles for catalyst supports
    Patent number: 7078469
    Abstract: Polymeric supports, which have been treated with a halosulfonic acid, increase the activity of single-site catalysts used with aluminoxane co-catalysts, resulting in improved ethylene polymerization. The present invention seeks to provide polymeric catalyst supports which have been treated with halosulfonic acid for improved activity.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: July 18, 2006
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Xiaoliang Gao, Jessie Anne Leighton, Matthew Gerald Kowalchuk
  • Olefin polymerization catalyst system
    Patent number: 7001962
    Abstract: A catalyst system comprises 1) a group 4 organometallic catalyst and 2) an activator comprising a solid zirconium acid component and a metal alkyl. The catalyst system is inexpensive and is highly active for the polymerization of olefins. Preferred organometallic catalysts contain a cyclopentadienyl ligand, a phosphinimine ligand and or a ketimide ligand.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: February 21, 2006
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Jessie Leighton, Matthew Gerald Kowalchuk, P. Scott Chisholm
  • Olefin polymerization catalyst system
    Publication number: 20040097364
    Abstract: A catalyst system comprises 1) a group 4 organometallic catalyst and 2) an activator comprising a solid zirconium acid component and a metal alkyl. The catalyst system is inexpensive and is highly active for the polymerization of olefins. Preferred organometallic catalysts contain a cyclopentadienyl ligand, a phosphinimine ligand and or a ketimide ligand.
    Type: Application
    Filed: September 16, 2003
    Publication date: May 20, 2004
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Jessie Leighton, Matthew Gerald Kowalchuk, P. Scott Chisholm
  • Catalyst for olefin polymerization
    Patent number: 6734266
    Abstract: A supported catalyst for olefin polymerization comprises a combination of a sulfated metal oxide support, an aluminoxane and an organometallic complex of a group 4 metal. The sulfated metal oxide may be quickly and conveniently prepared by, for example, contacting the precursor metal oxide with a sulfuric acid. The supported catalyst of this invention is highly active for olefin polymerization in comparison to conventional catalysts which are prepared with non-sulfated supports.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: May 11, 2004
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, P. Scott Chisholm, Matthew Gerald Kowalchuk, Robert D. Donaldson
  • Halosulfonic acid treated catalyst support for olefin polymerization
    Patent number: 6730755
    Abstract: A supported catalyst for olefin polymerization comprises a combination of a novel metal oxide support and an activator which is an aluminoxane or a boron activator. The novel metal oxide support of this invention is a conventional particulate metal oxide support material (such as silica or alumina) which has been treated with a halosulfonic acid. A catalyst system which contains this novel catalyst support and a transition metal catalyst is highly active for olefin polymerization (in comparison to prior art catalyst systems which use a conventional metal oxide support).
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: May 4, 2004
    Assignee: Nova Chemicals (Internation) S.A
    Inventors: Xiaoliang Gao, P. Scott Chisholm, Matthew Gerald Kowalchuk, Robert D. Donaldson
  • Halosulfonic acid treated catalyst support for olefin polymerization
    Publication number: 20030092563
    Abstract: A supported catalyst for olefin polymerization comprises a combination of a novel metal oxide support and an activator which is an aluminoxane or a boron activator. The novel metal oxide support of this invention is a conventional particulate metal oxide support material (such as silica or alumina) which has been treated with a halosulfonic acid. A catalyst system which contains this novel catalyst support and a transition metal catalyst is highly active for olefin polymerization (in comparison to prior art catalyst systems which use a conventional metal oxide support).
    Type: Application
    Filed: February 7, 2002
    Publication date: May 15, 2003
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, P. Scott Chisholm, Matthew Gerald Kowalchuk, Robert D. Donaldson
  • Catalyst for olefin polymerization
    Publication number: 20030087754
    Abstract: A supported catalyst for olefin polymerization comprises a combination of a sulfated metal oxide support, an aluminoxane and an organometallic complex of a group 4 metal. The sulfated metal oxide may be quickly and conveniently prepared by, for example, contacting the precursor metal oxide with a sulfuric acid. The supported catalyst of this invention is highly active for olefin polymerization in comparison to conventional catalysts which are prepared with non-sulfated supports.
    Type: Application
    Filed: February 13, 2002
    Publication date: May 8, 2003
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, P. Scott Chisholm, Matthew Gerald Kowalchuk, Robert D. Donaldson
  • Iron olefin copolymerization catalyst
    Patent number: 6300435
    Abstract: Olefin Co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of Group 8, 9 or 10 phosphinimine complex other than nickel.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: October 9, 2001
    Assignee: Nova Chemical (International) S.A.
    Inventors: Xiaoliang Gao, Qinyan Wang, Matthew Gerald Kowalchuk