Patents Represented by Attorney Myron B. Kurtzman
  • Patent number: 4565798
    Abstract: A process for polymerizing olefins in the presence of a catalyst composed of:(A) a catalyst component obtained by contacting with one another,(a) a magnesium alkoxide,(b) a silicon compound having a hydrogen-silicon bond,(c) an electron donor compound, and(d) a titanium compound(B) an organic compound of a metal of Groups I and III of the Periodic Table, and(C) an organo silicon compound represented by the formula R.sub.q.sup.9 SiX.sub.g.sup.2 (OR.sup.10).sub.k wherein R.sup.9 and R.sup.10 are the same or different hydrocarbon groups, X.sub.2 is a halogen atom, 0.ltoreq.q<4, 0.ltoreq.g<4, 0<k.ltoreq.4, and q+g+k=4.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 21, 1986
    Assignee: TOA Nenryo Kogyo Kabushiki Kaisha
    Inventors: Tadashi Yamamoto, Hiroyuki Furuhashi, Masafumi Imai, Hiroshi Ueno, Naomi Inaba
  • Patent number: 4565796
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, an oxygen containing compound, a halogen, interhalogen compound or halosilane and titanium tetrachloride.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: January 21, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Bradley P. Etherton
  • Patent number: 4564606
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, an oxygen containing compound, an acyl halide and titanium tetrachloride and Cl.sub.2, Br.sub.2 or an interhalogen.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: January 14, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Patent number: 4562170
    Abstract: An olefin polymerization catalyst produced by treating a inert porous 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 hafnium 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: September 4, 1984
    Date of Patent: December 31, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Victoria Graves
  • Patent number: 4558025
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, an oxygen containing compound, an acyl halide and titanium tetrachloride and a Group IIIa hydrocarbyl metal dihalide.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: December 10, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Patent number: 4558024
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, optionally an oxygen containing compound, titanium tetrachloride and a Group IIIa metal hydrocarbyl dihalide.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: December 10, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Steven A. Best
  • Patent number: 4426314
    Abstract: According to a first aspect of this invention, there is provided A magnesium-containing solid, obtained by contacting the reaction product of (1):(A) metallic magnesium;(B) a halogenated hydrocarbon of the general formula RX in which R stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms, and X stands for a halogen atom; and(C) an alkoxy compound of the general formula X'.sub.m C(OR').sub.4-m in which X' stands for a hydrogen or halogen atom, or an alkyl, aryl or cycloalkyl group having 1 to 10 carbon atoms, R' stands for an alkyl, aryl or cycloalkyl group having 1 to 20 carbon atoms, and m is 0, 1 or 2, with (2) an electron donative compound and hydrogen halide. The supported transition metal in combination with an organoaluminum co-catalyst is employed as an olefin polymerization catalyst.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: January 17, 1984
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Makoto Miyazaki, Takeshi Nomura, Chihiro Imai, Makoto Yoda
  • Patent number: 4414371
    Abstract: Polyolefin granules having an average particle size diameter greater than 600 microns, preferably about 1000 microns or greater are obtained by polymerizing monoolefins in the presence of a titanium catalyst having an average particle size diameter of greater than about 35 microns and preferably 40 to 65 microns. The titanium catalysts are obtained by reducing titanium tetrahalide in the presence of a suitable organometallic reducing compound such as diethylaluminum chloride under controlled conditions of temperature, reduction rate and concentrations to obtain a titanium halide reduced solids product seeds having an average particle size diameter of about 20 microns or greater and thereafter simultaneously and without interruption adding to the seeds containing system titanium tetrahalide and organometallic reducing compound such as diethylaluminum halide at a rate such that the reduction of titanium tetrahalide to titanium trihalide is about 6.times.10.sup.-4 to about 0.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: November 8, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventor: Harry J. Wristers, deceased
  • Patent number: 4409282
    Abstract: A bulky nonwoven fabric comprises fine fibers forming thin intertwined layers extending between one surface of the fabric and the other surface, that is, the layered fibers run in the direction of thickness of the fabric. The nonwoven fabric of thermoplastic resin is prepared by a melt-blowing process utilizing a drum collector and cooperating nip-roll. If desired the fiber and gas stream may be contacted with fine liquid drops.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: October 11, 1983
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Shigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano
  • Patent number: 4255562
    Abstract: Crystalline co-polybenzyls are prepared by the polymerization of 2,5-dimethylbenzyl chloride with a benzyl halide of the same series. The polymers have utility in general thermoplastic applications such as, for example, the manufacture of conduits, hoses and pipes, as coatings for wire and cables, the manufacture of seals, molds and mechanical goods, tanks and pipelinings, and in other articles of manufacture.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: March 10, 1981
    Assignee: Exxon Research & Engineering Co.
    Inventors: John E. Chandler, Robert W. Lenz
  • Patent number: 4250996
    Abstract: Improved fastener articles, comprising a plurality of preferably rod-shaped fastener elements, such as nails or staples, are maintained in a predetermined configuration by bonding them together with one or more of either strips, films, or powdered particles of a specially formulated, adherent polyolefin copolymer. These fastener articles are especially adapted for use in automatic dispensers, i.e. nailers or staplers.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: February 17, 1981
    Assignee: Exxon Research and Engineering Co.
    Inventor: Kenneth W. Bartz
  • Patent number: 4228066
    Abstract: Copper chelates of 2-hydroxybenzophenones useful as UV light absorbers are employed to stabilize organic compositions such as polymer compositions against degradation on embrittlement on exposure to UV light.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: October 14, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventor: Burnett H. Johnson
  • Patent number: 4227356
    Abstract: A heat-insulating sandwich-like composite comprising a core of foamed resin based compound sandwiched between and adhering to single face corrugated board with a high wet strength. The single face corrugated board is perforated prior to foaming of the resin based compound so as to allow the excess of volatile matter to escape and some foaming mixture to penetrate inside the corrugated flute. The composite board further is provided with post-perforations made after foaming the resin compound between the corrugated board skins.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: October 14, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Eric P. Stern, George J. Venta, Riad Mia, Solomon M. Vines
  • Patent number: 4225650
    Abstract: A fusable powder composition comprising a cross-linkable organic polymeric material of less than 75 micron size, an organic peroxide, and preferably for some polymers an organosilicon compound for forming polymeric coatings on substrates such as glass or metal.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: September 30, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert A. van Brederode, Robert A. Steinkamp
  • Patent number: 4222986
    Abstract: The fouling of autorefrigeration polymerization systems because of entrained particles in the vaporized solvent-diluent is substantially reduced by returning the recycle solvent-diluent into the reaction zone through nozzles which provide a solvent-diluent spray of an average droplet size of less than 1000 microns, preferably between about 225 and 300 micron average particle size, which spray removes major amounts of entrained particles down to 5 microns in size. The solvent diluent may be an inert material or unreacted alpha-olefin, such as propylene.
    Type: Grant
    Filed: January 9, 1979
    Date of Patent: September 16, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Stuart B. Smith, James J. McAlpin, Jose M. A. Peruyero, Ronald L. Hazelton, Edward F. Upchurch
  • Patent number: 4203942
    Abstract: Substantial and commercially important increases in polypropylene film production rates without adversely affecting film quality are obtained in a tubular water film process. The improvements comprise modifications in the die lip, in the mandrel air (fluid) slot affecting the cooling gas velocity, and in the upper bubble pressure control. The improvements are especially useful to obtain mill rolls 60 to 80 inches wide.
    Type: Grant
    Filed: December 9, 1977
    Date of Patent: May 20, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: J. Robert Sims, Jr., Willard N. Mitchell, Charles W. Williamson
  • Patent number: 4201228
    Abstract: A process for preparing and the ingredients for preparing a non-tobacco smoking product is disclosed. The product consists essentially of a mixture comprising sugar beet leaves, white beet leaves, sugar cane leaves and the inner white part of the grapefruit peel.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: May 6, 1980
    Inventor: Olga Lewinger
  • Patent number: 4201820
    Abstract: Flexible circuit articles comprising microcellular film such as films from polyparabanic acid having a conductive circuit adhered to said film.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: May 6, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventor: Burnett H. Johnson
  • Patent number: 4177895
    Abstract: A package exhibiting high strength for containment during storage and shipping and stability thereof in humidity variations. This package comprises a multi-cell container prepared from a partially corrugated first material having peaks and flutes, a polymeric film encompassing the outermost peripheral surface of said container and a cover for said container and which cover is prepared from at least a partially corrugated second material having peaks and flutes.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: December 11, 1979
    Inventor: Marcus H. Shelton
  • Patent number: 4113806
    Abstract: A polypropylene impact blend having a good overall balance of mechanical properties, particularly high impact strength, and surprisingly high clarity is disclosed which includes about 70 to about 90% by weight of a polypropylene, about 1 to about 18% by weight of a low density polyethylene and about 2 to about 24% by weight of an amorphous ethylene-propylene copolymer elastomer, with or without a non-conjugated diene, having a high combined ethylene content. The polypropylene impact blends are useful for making molded or extruded shaped articles and the like which are essentially clear.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: September 12, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Albert T. Watson, Robert L. Hull