Patents Examined by Patrick P. Garvin
  • Process for converting butadiene to styrene or ethylbenzene or both using catalysts containing molybdenum
    Patent number: 5276257
    Abstract: Butadiene is converted to ethylbenzene or styrene or both by contacting butadiene with a catalyst containing molybdenum.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: January 4, 1994
    Assignee: The Dow Chemical Company
    Inventor: Ronald W. Diesen
  • Olefin polymerization
    Patent number: 5275992
    Abstract: A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the polymerization zone to give a catalyst which can be used satisfactorily in a loop reactor with lower levels of cocatalyst.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: January 4, 1994
    Assignee: Phillips Petroleum Company
    Inventors: Kent E. Mitchell, Max P. McDaniel, M. Bruce Welch, Elizabeth A. Benham, Grover W. Cone
  • High VI synthetic lubricants from thermally cracked slack wax
    Patent number: 5276229
    Abstract: A process for the production of synthetic lubricants having high viscosity index by oligomerizing a mixture of alpha-olefins produced from the thermal cracking of slack wax or recycled slack wax. The oligomerization is carried out with a reduced metal oxide catalyst, preferably a carbon monoxide reduced chromium oxide on a silica support. The olefin product from the thermal cracking step is purified, preferably by hydrotreating prior to the oligomerization step.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: January 4, 1994
    Assignee: Mobil Oil Corp.
    Inventors: J. Scott Buchanan, Margaret M. Wu
  • Olefin polymerization catalyst
    Patent number: 5275993
    Abstract: An olefin polymerization catalyst which is obtained by contacting the following components (A) and (B): component (A): a product of contacting the following components (A.sub.1) and (A.sub.2):component (A.sub.1): polyolefin powder having specific values of pore diameter, pore volume, average pore diameter and average particle diameter,component (A.sub.2): a solid component for a Ziegler catalyst comprising titanium, magnesium and a halogen as the essential components;component (B): an organoaluminum compound.The supporting state of the catalyst is improved, and a contaminant-free polymer having a satisfactorily large particle diameter without the lowering of the activity or the stereoregularity of the catalyst is successfully obtained.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: January 4, 1994
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Takashi Fujita, Kazuyo Kitagawa
  • Membrane and use thereof in oxidative conversion
    Patent number: 5276237
    Abstract: A membrane of an oxidative conversion contact material of a mixed oxide of aluminum and at least one multivalent activator metal with the membrane permitting selective conveyance of a form of oxygen therethrough, as well as methods for the oxidative conversion of a gaseous hydrocarbon reactant using such membranes are provided.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: January 4, 1994
    Assignee: Amoco Corporation
    Inventor: Rodney L. Mieville
  • Dimerization and/or dehydrogenation of alkanes
    Patent number: 5276241
    Abstract: Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VII or VIII or compound thereof is used as stoichiometric reagent in the oxidative dimerization of hydrocarbons having three or four carbon atoms. Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VI, VII or VIII or compound thereof is used as stoichiometric reagent in the dehydrogenation of hydrocarbons having three or four carbon atoms.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: January 4, 1994
    Assignee: Sun Company, Inc. (R&M)
    Inventors: Vincent A. Durante, James E. Lyons
  • Process for producing 2-methylnaphthalene
    Patent number: 5276234
    Abstract: The invention provides a process for producing 2-methylnaphthalene by isomerization of 1-methylnaphthalene in which a Y zeolite having a unit cell constant of less than or equal to 24.37 .ANG. (10.sup.-10 m) is used as an isomerization catalyst.Since the isomerization is effected by the use of the inventive heterogeneous solid catalyst which has a long catalyst life, 2-methylnaphthalene is produced from 1-methylnaphthalene efficiently with less cost and handling steps for regeneration or exchange of the catalyst.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: January 4, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Tatsuya Nobusawa, Toshihide Suzuki, Akinori Matsuura
  • Dehydroisomerization catalyst and its use in the preparation of isobutene from n-butane
    Patent number: 5275995
    Abstract: A catalyst is described for the preparation of isobutene by dehydroisomerization of n-butane consisting of a solid, granular support of porous gamma-alumina on the surface of which catalytic quantities of platinum, silica and preferably also one or more promotors are deposited. In a preferred form of embodiment this catalyst is used with a second catalyst which may be formed of Boralite B or a solid granular support gamma-alumina on the surface of which catalytic quantities of silica are deposited.The present invention relates also to the process of dehydroisomerization of n-butane to isobutene in which the catalyst is used and the relative operating conditions.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: January 4, 1994
    Assignees: Eniricere S.p.A., Snamprogetti S.p.A.
    Inventors: Giuseppe Bellussi, Aldo Giusti, Laura Zanibelli
  • Dimerization of long-chain olefins using a silica gel alkylsulfonic acid
    Patent number: 5276239
    Abstract: A process is disclosed for preparing synthetic lubricant base stocks having a high dimer to trimer ratio from long-chain olefins. These synthetic lubricant base stocks are prepared in good yield by dimerizing linear olefins using a catalyst comprising a silica gel alkylsulfonic acid.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: January 4, 1994
    Assignee: Texaco Chemical Company
    Inventors: Sanderson John R., John F. Knifton, Edward T. Marquis
  • Supported high activity polyolefin catalyst component with regular distribution of magnesium values provided utilizing a controlled drying protocol
    Patent number: 5275991
    Abstract: A novel catalyst support and a method for preparation thereof, characterized by the presence of selected amounts of a hydrocarbon soluble magnesium-containing compound applied to the support relative to solvent, wherein a surface uniformly and essentially continuously moistened with the solvated magnesium compound in a condition of incipient precipitation to permit the formation of a regular essentially continuous distribution of the magnesium compound onto and conforming to the support material. The drying process under these conditions is effective in maintaining to a high degree the effective surface area and pore volume of the material. The support containing the adsorbed magnesium is then dried in a controlled manner to essential incipient wetness conditions providing a regular spatial distribution of stacked reticular magnesium values at a level of one to five molecular monolayers on the support.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: January 4, 1994
    Assignee: Quantum Chemical Corporation
    Inventors: Charles K. Buehler, Albert P. Masino, Raghu Menon
  • Catalyst composition for hydrogenating olefinically unsaturated polymers
    Patent number: 5270274
    Abstract: A catalyst composition comprising: (a) a bis(cyclopentadienyl) transition metal compound, (b) at least one polarized compound selected from the group consisting of carbonyl group-containing compounds and epoxy group containing compounds, and (c) an organic lithium compound. It has a high hydrogenation activity and is useful for hydrogenating olefinically unsaturated polymers for providing the olefinically unsaturated polymers with excellent characteristics as superior weatherability, good heat resistance, superb oxidation resistance, and the like.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: December 14, 1993
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Yoshiharu Hashiguchi, Takashi Ishida, Hiroyuki Sasanuma, Yasuhiko Takemura
  • Solid component of catalyst for the homo- and co-polymerization of ethylene
    Patent number: 5270275
    Abstract: A solid component of catalyst for the (co)polymerization of ethylene, including magnesium, halogen and titanium, is prepared:(i) by dissolving a magnesium dialkyl, a silicon halide and at times also an alkyl halide, in an inert organic solvent and maintaining contact until a granular solid precipitates;(ii) putting this granular solid in contact and making it react with a titanium halide, alkoxide or halogen-alkoxide, to produce a solid component of catalyst; and(iii) activating this solid component of catalyst by contact with aluminium alkyl halide, if a titanium alkoxide or halogen-alkoxide has been used in phase (ii).
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: December 14, 1993
    Assignee: Ecp Enichem Polimeri S.R.L.
    Inventors: Luciano Luciani, Federico Milani, Maddalena Pondrelli, Italo Borghi, Renzo Invernizzi
  • Process and apparatus for converting saturated hydrocarbons
    Patent number: 5268525
    Abstract: The invention relates to the conversion of saturated hydrocarbons.According to the invention a first gas containing chlorine and a second gas containing hydrogen are introduced into a chamber (3) so as to mix them. At the exit (4) of this chamber (3) the mixture of chlorine and hydrogen is ignited and the products originating from this flame are then mixed in a chamber (7) with a third gas containing the hydrocarbons to be converted, with a mean weight content of hydrogen element of at least 18%. The effluents from the chamber (7) are collected, quenched and fractionated. The hydrochloric acid is reformed into chlorine which is recycled in the first gas, the hydrogen is recycled in the second gas, and the alkanes in the third gas. The unsaturated hydrocarbons are recovered.The invention applies in particular to the conversion of natural gases into unsaturated hydrocarbons, such as ethylene.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: December 7, 1993
    Assignee: Gaz de France
    Inventor: Guy-Marie Come
  • Catalyst for selective hydrogenation reaction
    Patent number: 5268521
    Abstract: Disclosed herein is a catalyst for especially for selective hydrogenation among a carbon-carbon double bond, a carbonyl group and an aromatic unsaturated ring such as benzene. The catalyst comprising platinum and zeolite can be employed for selectively hydrogenating the carbon-carbon double bond and the carbonyl group of an organic compound without the hydrogenation of the aromatic unsaturated. The catalyst comprising the platinum supported on a support which comprises powders of an inorganic component to which is supported polyethylene glycol or an ethylvinylbenzene-divinylbenzene copolymer can be employed for selectively hydrogenating the carbon-carbon double bond of an organic compound without the hydrogenation of the carbonyl group and the aromatic unsaturated ring.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: December 7, 1993
    Assignee: Tanaka Kikinzoku Kogyo K.K.
    Inventors: Kenji Tamaru, Kikuo Shoji, Kazuki Noda
  • Process for the aromatization of hydrocarbons containing 5 to 9 carbon atoms per molecule in the presence of a particular catalyst
    Patent number: 5268522
    Abstract: For the catalytic aromatization of hydrocarbons containing 5 to 9 carbons atoms per molecule, use is made of a catalyst containing a MFI zeolite containing at least one noble metal from the platinum family and at least one additional metal chosen from the group constituted by tin, germanium, lead and indium, and optionally an amorphous matrix.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: December 7, 1993
    Assignee: Institut Francais de Petrole
    Inventors: Jean-Paul Bournonville, Francis Raatz, Jeannine Juguin, Sylvie Juguin
  • Olefin polymerization catalyst and process for the polymerization of olefins
    Patent number: 5266544
    Abstract: In accordance with the present invention, there are provided olefin polymerization solid catalysts comprising[A] a solid titanium catalyst component containing titanium, magnesium and halogen as its essential ingredients, said catalyst component having supported thereon[B] a transition metal compound containing a ligand having a cycloalkadienyl skeleton and, if necessary,[C] an organoaluminum oxy-compound.In accordance with the invention, there are also provided olefin polymerization solid catalysts comprising[i] a solid containing a transition metal compound containing a ligand having a cycloalkadienyl skeleton, said solid having supported thereon[ii] a titanium catalyst component containing titanium, magnesium and halogen as its essential ingredients and, if necessary,[iii] an organoaluminum oxy-compound.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: November 30, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Toshiyuki Tsutsui, Takashi Ueda
  • Diatomaceous earth containing adsorbent, method for making, and methods of use thereof
    Patent number: 5266547
    Abstract: An adsorbent composition containing sugar, vinegar, and diatomaceous earth is disclosed. The sugar, vinegar, and diatomaceous earth are preferably added together in about equal amounts by volume or in amounts of about 20 pounds of sugar, 2 gallons of vinegar, and 100 pounds of diatomaceous earth. The adsorbent composition has particular use in adsorbing petroleum oil from soil, water, or air and in water purification.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 30, 1993
    Inventor: Gary W. Wollrich
  • Fluorinated finishes for aramids
    Patent number: 5266076
    Abstract: A method for modifying the surface properties of aramids by coating aramid fibers with certain fluorinated compounds containing polar nitrogen groups. Also disclosed are the fibers and fabrics produced by this process, and their use in ballistic applications.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: November 30, 1993
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Chitrangad, Jose M. Rodriguez-Parada
  • Catalyst compositions
    Patent number: 5266545
    Abstract: A catalyst composition useful in the preparation of a polymer composition includes a Group VIII metal and a phosphorus bidentate ligand of the general formula (R.sub.2)(R.sub.4)P--R.sub.3 --P(R.sub.2)(R.sub.4) wherein R.sub.2 and R.sub.4 are optionally polar substituted alkyl groups, differing from each other in carbon number, and wherein R.sub.3 is a divalent organic bridging group which contains four atoms. Such catalyst compositions are particularly useful for preparing copolymers of carbon monoxide with .alpha.-olefins having at least three carbon atoms.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: November 30, 1993
    Assignee: Shell Oil Company
    Inventors: Peter A. A. Klusener, Johannes J. M. Snel
  • Process for converting olefins to higher hydrocarbons
    Patent number: 5264643
    Abstract: Light olefins are converted to heavier hydrocarbon products, e.g., those boiling in the gasoline, distillate, and/or lube range, under oligomerization reaction conditions in the presence of catalyst comprising zeolite MCM-49.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: November 23, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Frank T. DiGuiseppi, Scott Han, Roland H. Heck