Patents by Inventor Victoria Ker

Victoria Ker 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).

  • Adjusting polymer characteristics through process control
    Patent number: 7323523
    Abstract: Properties of a polymer produced in gas phase or slurry phase using a dual catalyst such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as temperature, (co)monomer pressure, hydrogen partial pressure and the presence of non-polymerizable hydrocarbon. This provides an easy method to control the bimodality of a polymer as well as comonomer incorporation.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: January 29, 2008
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Cliff Robert Baar, Victoria Ker, Peter Zoricak, Paul Mesquita
  • Adjusting polymer characteristics through process control
    Patent number: 7321015
    Abstract: Properties of a polymer produced using a dual catalyst on the same support, such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as temperature, monomer pressure, hydrogen partial pressure and the presence of non-polymerizable hydrocarbon. This provides an easy method to control the bimodality of a polymer as well as comonomer incorporation.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: January 22, 2008
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Cliff Robert Baar, Victoria Ker, Peter Zoricak, Paul Mesquita
  • Enhanced polyolefin catalyst
    Patent number: 7211535
    Abstract: The present invention provides a novel process for preparing a catalyst useful in gas phase polymerization of olefins wherein the physical properties of the polymer and the productivity of the catalyst can be altered depending on the sequence of addition of the catalyst components. The catalyst consists of compounds of Ti, Mg, Al and optionally an electron donor supported on an amorphous support.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: May 1, 2007
    Assignees: Nova Chemicals Corporation, Ineos Europe Limited
    Inventors: Mark Kelly, Shivendra Kumar Goyal, Victoria Ker, Perry Montyn de Wit, Brian Stephen Kimberley, Peter Phung Ming Hoang
  • Enhanced catalyst productivity
    Publication number: 20070060724
    Abstract: The productivity of a catalyst in a gas phase polymerization of olefins (e.g. grams of polymer per gram of catalyst) may be increased by including in the gas phase from 1 to 20 weight % of an inert non-polymerizable hydrocarbon. The hydrocarbon may be in gaseous form but preferably is in liquid form.
    Type: Application
    Filed: September 13, 2005
    Publication date: March 15, 2007
    Inventors: Victoria Ker, Shivendra Goyal, Mark Kelly, Yan Jiang, Claudine Lalanne-Magne
  • Adjusting polymer characteristics through process control
    Publication number: 20060122342
    Abstract: Properties of a polymer produced using a dual catalyst on the same support, such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as temperature, monomer pressure, hydrogen partial pressure and the presence of non-polymerizable hydrocarbon. This provides an easy method to control the bimodality of a polymer as well as comonomer incorporation.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 8, 2006
    Inventors: Peter Hoang, Cliff Baar, Victoria Ker, Peter Zoricak, Paul Mesquita
  • Adjusting polymer characteristics through process control
    Publication number: 20060122362
    Abstract: Properties of a polymer produced in gas phase or slurry phase using a dual catalyst such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as temperature, (co)monomer pressure, hydrogen partial pressure and the presence of non-polymerizable hydrocarbon. This provides an easy method to control the bimodality of a polymer as well as comonomer incorporation.
    Type: Application
    Filed: June 20, 2005
    Publication date: June 8, 2006
    Inventors: Peter Phung Hoang, Cliff Baar, Victoria Ker, Peter Zoricak, Paul Mesquita
  • Enhanced polyolefin catalyst
    Publication number: 20060094838
    Abstract: The present invention provides a novel process for preparing a catalyst useful in gas phase polymerization of olefins wherein the physical properties of the polymer and the productivity of the catalyst can be altered depending on the sequence of addition of the catalyst components. The catalyst consists of compounds of Ti, Mg, Al and optionally an electron donor supported on an amorphous support.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 4, 2006
    Inventors: Mark Kelly, Shivendra Goyal, Victoria Ker, Perry de Wit, Brian Kimberley
  • Polymer control through co-catalyst
    Patent number: 6825293
    Abstract: Some properties such as dart impact strength, hexane extractables and resin stickiness of a polyethylene copolymer produced in a gas phase polymerization using a Ziegler-Natta catalyst are better controlled by regulating the ratio of aluminum from the co-catalyst to the polymer production rate. This enables one to improve properties such as dart impact strength and reduce hexane extractables by changing the amount of co-catalyst fed into the reactor.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: November 30, 2004
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Shivendra Kumar Goyal, Timothy Walter Wiwchar, Victoria Ker, Mark Kelly
  • Split aluminum addition process for making catalyst
    Patent number: 6140264
    Abstract: The present invention provides a novel process for preparing a catalyst, preferably free of electron donor, useful in gas phase polymerization of olefins having a broad polydispersity.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Nova Chemicals Ltd.
    Inventors: Mark Kelly, Dusan Jeremic, Victoria Ker, Charles Russell
  • Titanium process for making catalyst
    Patent number: 6046126
    Abstract: The present invention provides a novel process for preparing a catalyst, preferably free of electron donor, useful in gas phase polymerization of olefins having a broad polydispersity.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: April 4, 2000
    Inventors: Mark Kelly, Dusan Jeremic, Victoria Ker, Charles Russell