Patents by Inventor Andrew D. Overstreet

Andrew D. Overstreet 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).

  • Patent number: 6680417
    Abstract: A process for the production of an oligomer oil by the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a solid unsupported metallocene- and activator-containing catalyst system which is formed by removing the solvent from a solution of the soluble metallocene- and activator-containing catalyst system.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: January 20, 2004
    Assignee: BP Corporation North America Inc.
    Inventors: Vahid Bagheri, Robert E. Farritor, Randall J. Stolk, Andrew D. Overstreet, David Eisenberg, Frederic Grzeszczak
  • Publication number: 20030125595
    Abstract: A process for the production of an oligomer oil by the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a solid unsupported metallocene- and activator-containing catalyst system which is formed by removing the solvent from a solution of the soluble metallocene- and activator-containing catalyst system.
    Type: Application
    Filed: January 3, 2002
    Publication date: July 3, 2003
    Inventors: Vahid Bagheri, Robert E. Farritor, Randall J. Stolk, Andrew D. Overstreet, David Eisenberg, Frederic Grzeszczak
  • Patent number: 5877378
    Abstract: The alpha-olefin content of mixed hydrocarbon streams is selectively utilized to produce trialkylaluminum compounds in which the alkyl groups are linear primary alkyl groups. This selective utilization is accomplished by use of a specific, highly selective low residence-time, low isomerization catalytic displacement reaction. In addition, when alpha-olefins are the desired end product, a second low residence-time catalytic displacement reaction is utilized whereby high purity alpha olefins are produced.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: March 2, 1999
    Assignee: Amoco Corporation
    Inventors: Andrew D. Overstreet, Robert H. Allen, Larry H. Nemec, Ronny W. Lin
  • Patent number: 5550303
    Abstract: Olefin is formed by displacing alkyl groups of aluminum trialkyl by contacting ethylene with the aluminum trialkyl in an ethylene:aluminum trialkyl mol ratio in the range of 2-8:1 at about 0.degree.-70.degree. C. and at atmospheric up to about 1000 psia pressure, for a reaction time of about 0.5 to about 60 minutes in the presence of a displacement enhancing amount of a nickel- or cobalt-containing displacement catalyst. Despite the fact that the displacement reaction is an equilibrium reaction, the process does not use, as did the prior art, large excesses of ethylene to shift the equilibrium to favor displacement. Consequently, the volumes of ethylene used in the processing are reduced very substantially and yet yields of the desired displaced alpha olefin remain favorable.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: August 27, 1996
    Assignee: Amoco Corporation
    Inventors: Ronny W. Lin, Robert H. Allen, Andrew D. Overstreet
  • Patent number: 5274153
    Abstract: Linear 1-olefins are continuously prepared from internal olefins by (i) continuously feeding internal olefin, isomerization catalyst and tri-lower alkyl aluminum to a reaction zone so as to cause the internal olefin to isomerize to 1-olefins which displace the lower alkyl groups to form a trialkyl aluminum compound in which at least one of the alkyl groups is a linear alkyl derived from the 1-olefin, (ii) continuously removing trialkylaluminum compound from the reaction zone and, thereafter (iii) reacting the trialkyl aluminum compound with a 1-olefin so as to displace the linear alkyl from the trialkyl aluminum compound, thereby forming a linear 1-olefin product which is substantially free of internal olefins.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: December 28, 1993
    Assignee: Ethyl Corporation
    Inventors: Robert H. Allen, Ronny W. Lin, Andrew D. Overstreet
  • Patent number: 5191145
    Abstract: Linear 1-olefins are continuously prepared from internal olevins by (i) continuously feeding internal olefin, isomerization catalyst and tri-lower alkyl aluminum to a reaction zone so as to cause the internal olefin to isomerize to 1-olefins which displace the lower alkyl groups to form a trialkyl aluminum compound in which at least one of the alkyl groups is a linear alkyl derived from the 1-olefin, (ii) continuously removing trialkylaluminum compound from the reaction zone and, thereafter, (iii) reacting the trialkyl aluminum compound with a 1-olefin so as to displace the linear alkyl from the trialkyl aluminum compound, thereby forming a linear 1-olefin product which is substantially free of internal olefins.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: March 2, 1993
    Assignee: Ethyl Corporation
    Inventors: Robert H. Allen, John N. Hu, Ronny W. Lin, Andrew D. Overstreet
  • Patent number: 5144053
    Abstract: Linear 1-olefins are prepared from internal olefins by (i) reacting them in the presence of an isomerization catalyst and a tri-lower alkyl aluminum so as to cause internal olefin to isomerize to 1-olefins which displace the lower alkyl groups to form a trialkyl aluminum compound in which at least one of the alkyl groups is a linear alkyl derived from the 1-olefin, and, thereafter, (ii) reacting the trialkyl aluminum compound with a 1-olefin so as to displace the linear alkyl from the trialkyl aluminum compound, thereby forming a linear 1-olefin product which is substantially free of internal olefins.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: September 1, 1992
    Assignee: Ethyl Corporation
    Inventors: Robert H. Allen, Keith G. Anderson, Steven P. Diefenbach, Ronny W. Lin, Larry H. Nemec, Andrew D. Overstreet, Gene C. Robinson
  • Patent number: 5124465
    Abstract: Linear 1-olefins are prepared from internal olefins by (i) reacting them in the presence of an isomerization catalyst and a tri-lower alkyl aluminum so as to cause the internal olefin to isomerize to 1-olefins which displace the lower alkyl groups to form a trialkyl aluminum compound in which at least one of the alkyl groups is a linear alkyl derived from the 1-olefin, and, thereafter, (ii) reacting the trialkyl aluminum compound with a 1-olefin so as to displace the linear alkyl from the trialkyl aluminum compound, thereby forming a linear 1-olefin product which is substantially free of internal olefins.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: June 23, 1992
    Assignee: Ethyl Corporation
    Inventors: Robert H. Allen, Keith G. Anderson, Steven P. Diefenbach, Ronny W. Lin, Larry H. Nemec, Andrew D. Overstreet, Gene C. Robinson