Patents by Inventor Isam Jaber

Isam Jaber 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).

  • High temperature ziegler-natta solution catalysts
    Patent number: 6878658
    Abstract: The present invention provides a Ziegler-Natta catalyst useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium. The catalysts of the present invention contain an alkyl silanol and have a molar ratio of Si:Ti from 0.25:1 to 4:1. The catalysts are effective for the solution polymerization of olefins at high temperatures.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: April 12, 2005
    Assignee: Nova Chemicals (International) S.A.
    Inventor: Isam Jaber
  • High temperature ziegler-natta solution catalysts
    Publication number: 20030130108
    Abstract: The present invention provides a Ziegler-Natta catalyst useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium. The catalysts of the present invention contain an alkyl silanol and have a molar ratio of Si:Ti from 0.25:1 to 4:1. The catalysts are effective for the solution polymerization of olefins at high temperatures.
    Type: Application
    Filed: December 9, 2002
    Publication date: July 10, 2003
    Applicant: NOVA Chemicals (International) S.A.
    Inventor: Isam Jaber
  • Low aluminum and magnesium Z-N solution catalysts
    Patent number: 6339036
    Abstract: The present invention provides a Ziegler-Natta catalyst useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium. The catalysts of the present invention have a molar ratio of magnesium to the first aluminum component from 4.0:1 to 5.5:1 and molar ratio of magnesium to transition metal from 4.0:1 to 5.5:1.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: January 15, 2002
    Assignee: Nova Chemicals (International) S.A.
    Inventor: Isam Jaber
  • Dual reactor ethylene polymerization process
    Patent number: 6277931
    Abstract: A dual reactor process for the solution and (co)polymerization of ethylene uses two different types of catalysts in the two reactors. A catalyst having a phosphinimine ligand is used in the first reactor. A Ziegler Natta catalyst is used in the second reactor. The process of this invention is comparatively easy to control and may be used to produce polyethylene products having a broad molecular weight distribution. Linear low density produced according to this invention is well suited for the manufacture of molded goods and plastic films.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: August 21, 2001
    Assignee: Nova Chemical (International) S.A.
    Inventors: Isam Jaber, Stephen John Brown
  • Low aluminum and magnesium Z-N solution catalysts
    Patent number: 6130300
    Abstract: The present invention provides a Ziegler-Natta catalyst useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium. The catalysts of the present invention have a molar ratio of magnesium to the first aluminum component from 4.0:1 to 5.5:1 and molar ratio of magnesium to transition metal from 4.0:1 to 5.5:1.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: October 10, 2000
    Assignee: Nova Chemicals (International) S.A.
    Inventor: Isam Jaber
  • Mixed titanium-vanadium catalysts for solution ethylene polymerization
    Patent number: 6084042
    Abstract: The present invention provides a Ziegler-Natta catalyst based on titanium and vanadium useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium. The catalysts of the present invention have a molar ratio of magnesium to the first aluminum component from 4.0:1 to 8.0:1 and molar ratio of magnesium to titanium and vanadium from 4.0:1 to 8.0:1. The invention provides a novel catalyst preparation method to substantially increase the polymer molecular weight in the high temperature ethylene polymerization process.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: July 4, 2000
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Isam Jaber, Stephen John Brown