Patents by Inventor Gregory G. Arzoumanidis

Gregory G. Arzoumanidis 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).

  • Publication number: 20200392259
    Abstract: Aromatic complexes featuring metal-aryl bonds, active in propylene and other alpha olefin polymerizations are described herein. They are prepared by a single step reaction of readily available ligands Arx-L-E with MXy, wherein: Ar=Aryl sigma bonded to L, L=Heteroaromatic or heteroaliphatic ring, with one or more heteroatoms, including fused derivatives, E=Heteroatom on L, available for coordination with the metal. M=Transition metal from groups 3-6, 8, and the lanthanide series of the periodic table of elements. X=Halogenide, y=integer. The ligands react with the TiCl4 present on MgCl2 supported polypropylene catalysts and impart substantial activity and other enhancements. They may be used as ethylene or propylene polymerization and copolymerization with higher alpha-olefins, activated with aluminum alkyls such as triethylaluminum.
    Type: Application
    Filed: June 13, 2020
    Publication date: December 17, 2020
    Inventor: Gregory G. Arzoumanidis
  • Patent number: 5662052
    Abstract: A method of destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns define a cylindrical annular space with the inlet being positioned in registry with the axis of rotation of the ganged kilns. During operation, the temperature of the wall of the inner rotary kiln at the inlet is not less than about 500.degree. C. to heat the particulate material to a temperature in the range of from about 200.degree. C. to about 900.degree. C. in a pyrolyzing atmosphere to reduce the particulate material as it moves from the one end toward the other end.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: September 2, 1997
    Assignee: United States Department of Energy
    Inventors: Michael J. McIntosh, Gregory G. Arzoumanidis
  • Patent number: 5182245
    Abstract: A catalyst or catalyst component for the polymerization or copolymerization of alpha-olefins in the slurry phase is formed by a process comprising forming a solution of a magnesium-containing species in a liquid and precipitating solid particles from the solution of the magnesium-containing species by treatment with a transition metal halide in the presence of at least one of a tetrabutoxysilane and a tetrabutoxytitanate.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: January 26, 1993
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Christine Peaches
  • Patent number: 5124297
    Abstract: A catalyst or catalyst component for the polymerization of copolymerization of alpha-olefins, which is formed by a process comprising forming a solution of a magnesium-containing species in a liquid comprising at least one alcohol.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: June 23, 1992
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Mark A. Drezdzon, Sam S. Lee
  • Patent number: 5081090
    Abstract: A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprising the product formed by A) forming a solution of a magnesium-containing species from a magnesium alkyl (or hydrocarbyl) carbonate or a magnesium carboxylate; B) precipitating solid particles from such solution by treatment with a transition metal halide; C) reprecipitating such solid particles from a mixture containing a cyclic ether; D) treating the reprecipitated particles with a transition metal compound and an electron donor; and E) drying the resulting solid particles such that the residual volatile hydrocarbon content is between 0.1 and 0.9 weight percent.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: January 14, 1992
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Habet M. Khelghatian, Linda Ornellas
  • Patent number: 5013702
    Abstract: A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesium carbonate or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic ether; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: May 7, 1991
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Nicholas M. Karayannis, Habet M. Khelghatian, Sam S. Lee, Bryce V. Johnson
  • Patent number: 4988656
    Abstract: A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesium carbonte or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic ether; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: January 29, 1991
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Nicholas M. Karayannis, Habet M. Khelghatian, Sam S. Lee, Bryce V. Johnson
  • Patent number: 4946816
    Abstract: In a solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprising the product formed by (A) forming a solution of a magnesium-containing species from a magnesium alkyl (or hydrocarbyl) carbonate or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing toluene-based solvent by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic either; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor, the morphology of such component is modified by incorporating a morphology-affecting amount of C.sub.8 -C.sub.10 aromatics within the toluene-based solvent in Step B, Step A, in Step C prior to addition of ether, or combinations thereof.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: August 7, 1990
    Assignee: Amoco Corporation
    Inventors: Steven A. Cohen, Gregory G. Arzoumanidis, Nicholas M. Karayannis, Habet M. Khelghatian, Sam S. Lee
  • Patent number: 4866022
    Abstract: A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics comprises the product formed by (A) forming a solution of a magnesium-containing species from a magnesium carbonate or a magnesium carboxylate; (B) precipitating solid particles from such magnesium-containing solution by treatment with a transition metal halide and an organosilane; (C) reprecipitating such solid particles from a mixture containing a cyclic ether; and (D) treating the reprecipitated particles with a transition metal compound and an electron donor.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: September 12, 1989
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Nicholas M. Karayannis, Habet M. Khelghatian, Sam S. Lee, Bryce V. Johnson
  • Patent number: 4657883
    Abstract: An olefin polymerization catalyst component comprises an organoaluminum-reduced titanium trihalide on which a pretreatment amount of olefin polymer has been placed complexed with an alkyl aliphatic carboxylic acid ester containing 7 to 22 carbon atoms having a structure:R--CO.sub.2 R'wherein R' is an alkyl group containing 3 to about 8 carbon atoms and R is an alkyl group containing 3 to 17 carbon atoms, and treated with a Lewis acid, a chlorocarbon or an haloalkylchlorosilane.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: April 14, 1987
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Sam S. Lee, Thomas E. Wolff, Linda Ornellas
  • Patent number: 4612299
    Abstract: Composition comprising a transition metal component and magnesium carboxylate prepared by reacting a solution of hydrocarbyl magnesium compound with carbon dioxide to precipitate a magnesium carboxylate and reacting magnesium carboxylate with transition metal component.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: September 16, 1986
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Habet M. Khelghatian, Sam S. Lee
  • Patent number: 4579836
    Abstract: An exhaustively prepolymerized supported olefin polymerization catalyst component comprises solid, hydrocarbon-insoluble, magnesium-containing, titanium-containing catalyst particles which have been contacted with an olefin monomer and an organo-aluminum co-catalyst under exhaustive prepolymerization conditions at an Al/Ti atomic ratio such that the weight of prepolymer formed is less than 10 times the weight of such catalyst particles and the resulting prepolymerized catalyst particles essentially are inactive to further polymerization.
    Type: Grant
    Filed: May 22, 1985
    Date of Patent: April 1, 1986
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Sam S. Lee, Benjamin S. Tovrog
  • Patent number: 4540679
    Abstract: Composition comprising a transition metal component and magnesium hydrocarbyl carbonate. Composition can be prepared by reacting suspension of magnesium alcoholate with carbon dioxide to form a magnesium hydrocarbyl carbonate and reacting magnesium hydrocarbyl carbonate with transition metal component. When the suspending liquid comprises an alcohol, the magnesium hydrocarbyl carbonate dissolves and is subsequently precipitated with an antisolvent comprising metal alkyl or transition metal halide. When the suspending liquid is substantially free of alcohol, the magnesium hydrocarbyl carbonate suspension is reacted with metal alkyl and transition metal compound.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: September 10, 1985
    Assignee: Amoco Corporation
    Inventors: Gregory G. Arzoumanidis, Sam S. Lee
  • Patent number: 4444967
    Abstract: A substantially agglomeration-free, finely divided catalyst component which is suitable for use as a cocatalyst with organoaluminum compounds in the polymerization of alpha olefins, which is formed by grinding a titanium trichloride material, an effective amount of an electron pair donor compound to enhance the performance of said catalyst component, and an effective amount for agglomeration control of an agglomeration control agent. The agglomeration control agent is effective in either reducing the attractive forces between the finely divided particles in the catalyst component or by preventing the close approach of these particles which would result in agglomeration.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: April 24, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Gregory G. Arzoumanidis, Richard F. Gold, Christian G. Michel
  • Patent number: 4422956
    Abstract: A titanium-containing olefin polymerization catalyst component comprises a titanium-containing component formed by reducing titanium tetrachloride with an organoaluminum compound, optionally contacting the resulting reduced solid with a pretreatment amount of alpha-olefin monomer under polymerization conditions, and reacting the resulting product with a Lewis base complexing agent and a haloalkylchlorosilane.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: December 27, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: Gregory G. Arzoumanidis, Sam S. Lee
  • Patent number: 4400494
    Abstract: A propylene polymerization catalyst comprises (a) a titanium-containing component formed by reducing titanium tetrachloride with an aluminum alkyl, optionally contacting the resulting reduced solid with a pretreatment amount of alpha-olefin monomer under polymerization conditions, and reacting the resulting product with a Lewis base complexing agent and additional titanium tetrachloride, and (b) an alkyl aluminum halide having a halogen/aluminum atomic ratio between 0.89 and 0.98 and preferably between 0.92 and 0.98.
    Type: Grant
    Filed: August 28, 1981
    Date of Patent: August 23, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: Gregory G. Arzoumanidis, Benjamin S. Tovrog
  • Patent number: 4374816
    Abstract: A process for producing hypophosphorous acid (H.sub.3 PO.sub.2) by reacting, in the absence of a catalyst and under an acidic condition, phosphine with an aqueous solution of hydrogen peroxide to produce an acid solution. The acid solution is then contacted with an non-transition metal hydroxide, oxide or carbonate, e.g. sodium hydroxide, to produce a product composition containing a hypophosphite, e.g. sodium hypophosphite (NaH.sub.2 PO.sub.2.H.sub.2 O). The process of this invention finds particular utility in processes of the type wherein phosphorus is reacted with an aqueous non-transition metal hydroxide composition, e.g. an aqueous suspension of a sodium hydroxide and calcium hydroxide, to produce a hypophosphite and byproduct phosphine. The process of this invention converts a substantial portion of the byproduct phosphine to hypophosphite.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: February 22, 1983
    Assignee: Stauffer Chemical Company
    Inventors: Gregory G. Arzoumanidis, Kirk V. Darragh
  • Patent number: 4324693
    Abstract: In a method to produce an alpha-olefin polymerization catalyst comprising reducing titanium tetrachloride with an aluminum alkyl, contacting the resulting reduced solid with a pretreatment amount of alpha-olefin monomer under polymerization conditions and reacting the resulting product with a Lewis base complexing agent and additional titanium tetrachloride, the improvement comprising reacting the Lewis base complexing agent in a molar ratio to the reduced titanium compound of greater than 1.15 to 1.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: April 13, 1982
    Assignee: Standard Oil Company (Indiana)
    Inventors: Gregory G. Arzoumanidis, Sam S. Lee
  • Patent number: 4265866
    Abstract: A process for producing hypophosphorous acid (H.sub.3 PO.sub.2) by reacting, in the absence of a catalyst and under an acidic condition, phosphine with an aqueous solution of hydrogen peroxide to produce an acid solution. The acid solution is then contacted with an non-transition metal hydroxide, oxide or carbonate, e.g. sodium hydroxide, to produce a product composition containing a hypophosphite, e.g. sodium hypophosphite (NaH.sub.2 PO.sub.2.H.sub.2 O). The process of this invention finds particular utility in processes of the type wherein phosphorus is reacted with an aqueous non-transition metal hydroxide composition, e.g. an aqueous suspension of a sodium hydroxide and calcium hydroxide, to produce a hypophosphite and byproduct phosphine. The process of this invention converts a substantial portion of the byproduct phosphine to hypophosphite.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: May 5, 1981
    Assignee: Stauffer Chemical Company
    Inventors: Gregory G. Arzoumanidis, Kirk V. Darragh
  • Patent number: 4142991
    Abstract: A substantially agglomeration-free, finely divided catalyst component which is suitable for use as a cocatalyst with organoaluminum compounds in the polymerization of alpha olefins, which is formed by grinding a titanium trichloride material, an effective amount of an electron pair donor compound to enhance the performance of said catalyst component, and an effective amount for agglomeration control of an agglomeration control agent. The agglomeration control agent is effective in either reducing the attractive forces between the finely divided particles in the catalyst component or by preventing the close approach of these particles which would result in agglomeration.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: March 6, 1979
    Assignee: Stauffer Chemical Company
    Inventors: Gregory G. Arzoumanidis, Richard F. Gold, Christian G. Michel