Patents Represented by Attorney M. B. Kurtzman

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  • Catalyst component for polymerization of olefins P-998
    Patent number: 4613581
    Abstract: A solid titanium containing catalyst component for use in olefin polymerization said component prepared by contacting a magnesium alkoxide, a halogenated hydrocarbon, an electron donor and a titanium compound with one another. In preferred embodiments, the magnesium alkoxide is first contacted with a magnesium halide. The solid titanium containing compound can be treated with an organoaluminum compound.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: September 23, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Kouji Maruyama, Takeshi Nomura, Hiroshi Ueno, Naomi Inaba
  • Catalyst component for polymerization of olefins
    Patent number: 4613579
    Abstract: A catalyst component for the polymerization of olefins which is prepared by contacting a reaction product of dihydrocarbyl magnesium and a halogen-containing alcohol held in contact with a titanium compound.
    Type: Grant
    Filed: July 31, 1985
    Date of Patent: September 23, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Furuhashi, Tadashi Yamamoto, Masafumi Imai, Hiroshi Ueno
  • Polymerization catalyst, production and use
    Patent number: 4607019
    Abstract: A vanadium containing catalyst component useful for polymerizing olefins to polyolefins having a high molecular weight and broad molecular weight distribution comprising polymerizing the olefins in the presence of a catalyst comprising (a) a vanadium containing catalyst component obtained by contacting an inert support material with an organoaluminum compound, a halogenating agent and a vanadium compound, and (b) an aluminum alkyl cocatalyst.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: August 19, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Catalyst component for polymerization of olefins
    Patent number: 4595735
    Abstract: A catalyst component for the polymerization of olefins and particularly ethylene which is prepared by contacting a contact product of a magnesium alkoxide, a halogenated hydrocarbon, a halogenated silane with a titanium compound. The catalyst component in combination with a organoaluminium cocatalyst is useful for the polymerization of ethylene having a high melt index.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: June 17, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Takeshi Nomura, Kouji Maruyama, Hiroshi Ueno, Naomi Inaba
  • Polyethylene with broad molecular weight distribution
    Patent number: 4593010
    Abstract: Catalyst system comprising titanium containing catalyst component, isoprenylaluminum and a halohydrocarbon for the production of polyethylene having a broad molecular weight distribution.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: June 3, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Dennis B. Malpass
  • Catalyst component for polymerization of olefins
    Patent number: 4590325
    Abstract: A titanium halide containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyloxide with a silicon compound having a hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product two or more times with a titanium halide and between one of the multiple titanium halide contacts, contacting the titanium halide contacted solid with a halogenated hydrocarbon.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: May 20, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Masafumi Imai, Tadashi Yamamoto, Hiroyuki Furuhashi, Hiroshi Ueno, Naomi Inaba
  • Catalyst component for polymerization of olefins
    Patent number: 4588793
    Abstract: A titanium-containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyl oxide with a silicon compound having a hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product with an organoaluminum compound and further with a titanium compound.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: May 13, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Masafumi Imai, Tadashi Yamamoto, Hiroyuki Furuhashi, Hiroshi Ueno, Naomi Inaba
  • Organoaluminum compounds and their method of preparation (P-1038)
    Patent number: 4581467
    Abstract: An organoaluminum compound is provided, said organoaluminum compound being represented by the formula R.sub.1 R.sub.2 AlR.sub.p wherein R.sub.1 & R.sub.2 are the same or different hydrocarbyl groups having from 1 to 18 carbon atoms and R.sub.p is a polymeric hydrocarbyl group containing long chain branching said organoaluminum compound being useful for obtaining long chain branching in polymer product obtained by polymerizing a polymerizable olefin in the presence of transition metal-containing catalyst and said organo organoaluminum compound.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: April 8, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Dennis B. Malpass
  • Polymerization catalyst, production and use
    Patent number: 4579834
    Abstract: A vanadium-containing catalyst component useful for the polymerization of olefins to polyolefins having a high molecular weight and a broad molecular weight distribution comprising polymerizing the polyolefins in the presence of a catalyst comprising (A) a vanadium-containing catalyst component obtained by contacting an inert support material with a dihydrocarbyl magnesium compound, optionally an oxygen-containing compound, a vanadium compound, a Group III metal halide, and (B) an aluminum alkyl cocatalyst.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: April 1, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Polymerization catalyst, production and use
    Patent number: 4579835
    Abstract: A vanadium containing catalyst component useful for polymerizing olefins to polyolefins having a high molecular weight and broad molecular weight distribution comprising polymerizing the olefins in the presence of a catalyst comprising (a) a vanadium containing catalyst component obtained by contacting an inert support material with an organoaluminum compound, an acyl halide and a vanadium compound, and (b) an aluminum alkyl cocatalyst.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: April 1, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Polymerization catalyst system
    Patent number: 4578373
    Abstract: An olefin polymerization catalyst system comprising (I) a polymerization catalyst produced by treating an inert support material, preferably a hydrated high surface area silica support having 1.00 to 1.50 hydroxyls per gram of silica with the reaction product of an organomagnesium compound and first a zirconium compound and/or a hafnium compound then a halogenator and tetravalent titanium compound, (II) an organoaluminum compound cocatalyst and (III) a chlorinated hydrocarbon promoter which produces polymers having broad molecular weight distribution in high yields.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: March 25, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Victoria Graves
  • Polymerization catalyst, production and use
    Patent number: 4578374
    Abstract: A vanadium-containing catalyst component useful for the polymerization of olefins to polyolefins having a high molecular weight and a broad molecular weight distribution comprising polymerizing the polyolefins in the presence of a catalyst comprising (A) a vanadium-containing catalyst component obtained by contacting an inert support material with a dihydrocarbyl magnesium compound, optionally an oxygen-containing compound, a vanadium compound, a Group III metal halide, and (B) an aluminum alkyl cocatalyst.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: March 25, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Polymerization catalyst
    Patent number: 4568730
    Abstract: An olefin polymerization catalyst component produced by impregnating polyethylene with a pulverized solid olefin polymerization catalyst containing a Group 4b or 5b transition metal, for example a pulverized magnesium chloride containing titanium is impregnated in low molecular weight polyethylene by copulvering, then subjecting the impregnated polymer particles to shear in an inert medium at about the softening point of the polyethylene, which when used as a cocatalyst with an organoaluminum compound produces polymers of improved morphology having a more regular shape and higher bulk density than pulverized catalyst alone.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: February 4, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Victoria Graves
  • Polymerization catalyst comprising copulverized solid magnesium compound and solid halide of scandium
    Patent number: 4567153
    Abstract: An olefin polymerization catalyst produced by copulverizing a magnesium compound and a scandium halide, such as magnesium chloride and scandium chloride which is thereafter treated with one or more Group 4b or 5b transition metal compounds, which when used as a cocatalyst with an organoaluminum compound produces polymers in higher yields than magnesium compounds copulverized with organic esters as previously practiced and having broad molecular weight distribution.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: January 28, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Victoria Graves
  • Polymerization catalyst
    Patent number: 4554265
    Abstract: An olefin polymerization catalyst produced by treating an inert support material, preferably a hydrated high surface area silica support having 1.00 to 1.50 hydroxyls per gram of silica with the reaction product of an organomagnesium compound and first a zirconium compound then a halogenator and tetravalent titanium compound, which when used as a cocatalyst with an organoaluminum compound produces polymers having broad molecular weight distribution.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: November 19, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Victoria Graves
  • Catalyst component for polymerization of olefins
    Patent number: 4552858
    Abstract: A titanium halide containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyloxide with a silicon compound having at least one hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product two or more times with a titanium halide and between one of the multiple titanium halide contacts, contacting the titanium halide contacted solid with a halide of an element selected from the group consisting of elements of Groups IIIa, IVa, and Va of the Periodic Table of elements.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: November 12, 1985
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Masafumi Imai, Tadashi Yamamoto, Hiroyuki Furuhashi, Hiroshi Ueno, Naomi Inaba
  • Catalyst component for polymerization of olefins
    Patent number: 4551440
    Abstract: A titanium-containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyl oxide with a silicon compound having a hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product with an organoaluminum compound and further with a titanium compound.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: November 5, 1985
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Masafumi Imai, Tadashi Yamamoto, Hiroyuki Furuhashi, Hiroshi Ueno
  • Catalyst component for polymerization of olefins
    Patent number: 4550095
    Abstract: A titanium halide containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyloxide with a silicon compound having a hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product two or more times with a titanium halide and between one of the multiple titanium halide contacts, contacting the titanium halide contacted solid with a halogenated hydrocarbon.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: October 29, 1985
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Masafumi Imai, Tadashi Yamamoto, Hiroyuki Furuhashi, Hiroshi Ueno, Naomi Inaba
  • Catalyst component for polymerization of olefins
    Patent number: 4544648
    Abstract: A catalyst component for the polymerization of olefins and particularly ethylene which is prepared by contacting a contact product of a magnesium alkoxide, a halogenated hydrocarbon, a halogenated silane with a titanium compound. The catalyst component in combination with a organoaluminum cocatalyst is useful for the polymerization of ethylene having a high melt index.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: October 1, 1985
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Takeshi Nomura, Kouji Maruyama, Hiroshi Ueno, Naomi Inaba
  • Titanium trichloride catalyst component and the process for the production thereof
    Patent number: 4543400
    Abstract: A titanium trichloride catalyst component containing a minor amount of prepolymerized alpha-olefin and useful in the polymerization of alpha-olefins is produced by reducing titanium tetrachloride with an organoaluminum compound at low temperatures and then treating the resulting reduced solids product with about 1 to 1,000 wt. % alpha-olefin so as to obtain a prepolymerized titanium trichloride reduced solid. The prepolymerized reduced solid can thereafter be activate to a highly active prepolymerized titanium trichloride by treating the prepolymerized reduced solid with a halogenated hydrocarbon and a Lewis base complexing agent or titanium tetrachloride and a Lewis base complexing agent. The prepolymerized reduced solid and the prepolymerized activated titanium trichloride manifests substantially no evidence of friability upon being subjected to mechanical shearing forces.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: September 24, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Harry J. Wristers