Patents by Inventor Cliff Robert Baar

Cliff Robert Baar 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).

  • Modified phosphinimine catalysts for olefin polymerization
    Patent number: 9321859
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: April 26, 2016
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Patrick Lam, Victoria Ker, Cliff Robert Baar, Charles Ashton Garret Carter, Yan Jiang
  • Modified phosphinimine catalysts for olefin polymerization
    Patent number: 9127094
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: September 8, 2015
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Patrick Lam, Victoria Ker, Cliff Robert Baar, Charles Ashton Garret Carter, Yan Jiang, Martina Elissa Djatmiko
  • Modified phosphinimine catalysts for olefin polymerization
    Patent number: 9127106
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: September 8, 2015
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Patrick Lam, Victoria Ker, Cliff Robert Baar, Charles Ashton Garret Carter, Yan Jiang
  • MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION
    Publication number: 20150099856
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Peter Phung Minh Hoang, Patrick Lam, Victoria Ker, Cliff Robert Baar, Charles Ashton Garret Carter, Yan Jiang, Martina Elissa Djatmiko
  • Feeding highly active phosphinimine catalysts to a gas phase reactor
    Patent number: 8962775
    Abstract: A highly active, supported phosphinimine catalyst is fed to a gas phase reactor as a slurry in a liquid hydrocarbon. Feeding the catalyst to a gas phase reactor in a viscous liquid hydrocarbon modifies catalyst initiation kinetics.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Nova Chemicals (International) S.A
    Inventors: Peter Phung Minh Hoang, Cliff Robert Baar, P. Scott Chisholm, Rajesh Dahyabhai Patel
  • Modified phosphinimine catalysts for olefin polymerization
    Patent number: 8952111
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: February 10, 2015
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Patrick Lam, Victoria Ker, Cliff Robert Baar, Lee Douglas Henderson, Charles Ashton Garret Carter, Yan Jiang
  • MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION
    Publication number: 20140378632
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Application
    Filed: September 11, 2014
    Publication date: December 25, 2014
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Peter Phung Minh Hoang, Patrick Lam, Victoria Ker, Cliff Robert Baar, Charles Ashton Garret Carter, Yan Jiang
  • MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION
    Publication number: 20140357817
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Application
    Filed: July 31, 2014
    Publication date: December 4, 2014
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Patrick Lam, Victoria Ker, Cliff Robert Baar, Charles Ashton Garret Carter, Yan Jiang
  • Polyethylene film
    Patent number: 8829137
    Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: September 9, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Patrick Lam, Victoria Ker, Charles Ashton Garret Carter, Benjamin Milton Shaw, Cliff Robert Baar, Alexei Kazakov, Ian Douglas McKay, Dusan Jeremic
  • Methods for controlling ethylene copolymer properties
    Patent number: 8809473
    Abstract: A method for altering the polymer architecture of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the amount of a catalyst modifier added to a reactor separately from or together with a supported phosphinimine polymerization catalyst.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: August 19, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Patrick Lam, Victoria Ker, Cliff Robert Baar
  • Feeding Highly Active Phosphinimine Catalysts to a Gas phase reactor
    Publication number: 20130053524
    Abstract: A highly active, supported phosphinimine catalyst is fed to a gas phase reactor as a slurry in a liquid hydrocarbon. Feeding the catalyst to a gas phase reactor in a viscous liquid hydrocarbon modifies catalyst initiation kinetics.
    Type: Application
    Filed: July 27, 2012
    Publication date: February 28, 2013
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Peter Phung Minh Hoang, Cliff Robert Baar, P. Scott Chisholm, Rajesh Dahyabhai Patel
  • Modified phosphinimine catalysts for olefin polymerization
    Publication number: 20120316297
    Abstract: Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
    Type: Application
    Filed: September 19, 2011
    Publication date: December 13, 2012
    Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Victoria Ker, Cliff Robert Baar, Lee Douglas Henderson, Charles Ashton Garret Carter, Yan Jiang
  • Methods for controlling ethylene copolymer properties
    Publication number: 20120316301
    Abstract: A method for altering the polymer architecture of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the amount of a catalyst modifier added to a reactor separately from or together with a supported phosphinimine polymerization catalyst.
    Type: Application
    Filed: September 16, 2011
    Publication date: December 13, 2012
    Inventors: Peter Phung Minh Hoang, Benjamin Milton Shaw, Patrick Lam, Victoria Ker, Cliff Robert Baar
  • Reduced reactor fouling
    Patent number: 8304361
    Abstract: Fouling in a dispersed phase reactor in the presence of a phosphinimine catalyst and MAO may be reduced by reducing the loading of the phosphinimine catalyst to provide from 0.02 to 0.031 mmol of transition M per g of catalyst while still maintaining a productivity of not less than 2500 g of polymer/gram of catalyst. The catalyst may optionally be used in the presence of an antistatic agent.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 6, 2012
    Assignee: NOVA Chemical (International) S.A.
    Inventors: Xiaoliang Gao, Benjamin Milton Shaw, Cliff Robert Baar
  • POLYETHYLENE FILM
    Publication number: 20120238720
    Abstract: Polyethylene films having a good balance of optical and mechanical properties are disclosed. The films are derived from ethylene copolymer compositions made with a suitably substituted phosphinimine catalyst. The ethylene copolymers have very narrow molecular weight distributions and broadened comonomer distributions.
    Type: Application
    Filed: February 27, 2012
    Publication date: September 20, 2012
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Patrick Lam, Victoria Ker, Charles Ashton Garret Carter, Benjamin Milton Shaw, Cliff Robert Baar, Alexei Kazakov, Ian Douglas McKay, Dusan Jeremic
  • Reduced reactor fouling
    Publication number: 20110288248
    Abstract: Fouling in a dispersed phase reactor in the presence of a phosphinimine catalyst and MAO may be reduced by reducing the loading of the phosphinimine catalyst to provide from 0.02 to 0.031 mmol of transition M per g of catalyst while still maintaining a productivity of not less than 2500 g of polymer/gram of catalyst. The catalyst may optionally be used in the presence of an antistatic agent.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 24, 2011
    Inventors: Xiaoliang Gao, Benjamin Milton Shaw, Cliff Robert Baar
  • Polymer blends
    Patent number: 7531602
    Abstract: A blend of polymers comprising from 5 to 95 weight % of a polymer having a high molecular weight made using a single site type catalyst and from 95 to 5 weight % of a polymer having a lower molecular weight made using a catalyst containing a phenoxide, preferably a salicylaldimine ligand, has an excellent toughness and would be suitable for use in applications such as polyolefin pipes.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: May 12, 2009
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Peter Phung Minh Hoang, Cliff Robert Baar
  • 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
  • Dual catalyst on a single support
    Patent number: 7064096
    Abstract: Bimodal polyolefins having a reverse or partial reversed comonomer incorporation may be prepared in the presence of a dual catalyst on the same support wherein each catalyst has a different response to temperature, ethylene partial pressures, partial pressure of non-polymerizable hydrocarbons present in the reaction mixture and hydrogen partial pressure.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: June 20, 2006
    Assignee: Nova Chemicals (International) SA
    Inventors: Peter Phung Minh Hoang, Cliff Robert Baar, Peter Zoricak, Gail Baxter