Patents by Inventor Lee Douglas Henderson

Lee Douglas Henderson 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).

  • Reactor continuity
    Patent number: 9115224
    Abstract: A supported catalyst system comprising a phosphinimine ligand containing catalyst on an alumina support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: August 25, 2015
    Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • 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
  • Reactor continuity
    Patent number: 8846811
    Abstract: A dual catalyst system comprising a phosphinimine ligand containing catalyst and phenoxide ligand (preferably a salicylaldimine) on a support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: September 30, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • Reactor continuity
    Patent number: 8802584
    Abstract: A supported catalyst system comprising a phosphinimine ligand containing catalyst on a porous inorganic support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: August 12, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • 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
  • REACTOR CONTINUITY
    Publication number: 20120259081
    Abstract: A supported catalyst system comprising a phosphinimine ligand containing catalyst on a porous inorganic support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 11, 2012
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • REACTOR CONTINUITY
    Publication number: 20120259070
    Abstract: A dual catalyst system comprising a phosphinimine ligand containing catalyst and phenoxide ligand (preferably a salicylaldimine) on a support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Application
    Filed: March 26, 2012
    Publication date: October 11, 2012
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • REACTOR CONTINUITY
    Publication number: 20120259080
    Abstract: A supported catalyst system comprising a phosphinimine ligand containing catalyst on an alumina support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Application
    Filed: March 26, 2012
    Publication date: October 11, 2012
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • Trimerization
    Patent number: 8252955
    Abstract: A new P—N—P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: August 28, 2012
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • Amino phosphine
    Patent number: 8252956
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: August 28, 2012
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Amino phosphine
    Publication number: 20110257352
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 20, 2011
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Amino phosphine
    Patent number: 7994363
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 9, 2011
    Assignee: Nova Chemicals (International) S.A
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Tetramerization
    Patent number: 7906681
    Abstract: A new P—N—P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: March 15, 2011
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • TETRAMERIZATION
    Publication number: 20110015061
    Abstract: A new P—N—P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: September 20, 2010
    Publication date: January 20, 2011
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • Tetramerization
    Patent number: 7829749
    Abstract: A new P-N-P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: November 9, 2010
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • Tetramerization
    Publication number: 20100081777
    Abstract: A new P—N—P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: September 1, 2009
    Publication date: April 1, 2010
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • Trimerization
    Publication number: 20100081842
    Abstract: A new P—N—P ligand is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methylalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: September 1, 2009
    Publication date: April 1, 2010
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Lee Douglas Henderson
  • Amino phosphine
    Publication number: 20080242811
    Abstract: A new P—N—P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: March 20, 2008
    Publication date: October 2, 2008
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • 1,2-bis(9-bora-1,2,3,4,5,6,7,8-octafluorofluorenyl)-3,4,5,6-tetraflurobenzene and related compounds and methods
    Patent number: 7078546
    Abstract: The compound 1,2-bis(9-bora-1,2,3,4,5,6,7,8-octafluorofluorenyl)-3,4,5,6-tetrafluorobenzene, analogs of the compound, and methods for making the compound and its analogs.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: July 18, 2006
    Assignee: University Technologies International Inc.
    Inventors: Warren Edward Piers, Preston A. Chase, Lee Douglas Henderson