Patents Represented by Attorney William H. Magidson

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  • Aluminum soap thickened steel mill grease
    Patent number: 5096605
    Abstract: A high performance lubricating grease effectively lubricates and protects caster rollers and bearings in steel mills and other metal processing mills. The high performance grease has excellent extreme pressure and antiwear qualities and is economical, nontoxic and safe. The high performance grease can comprise a base oil, an aluminum soap thickener, extreme pressure wear-resistant additives comprising tricalcium phosphate and calcium carbonate, and a water-resistant high performance polymer.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: March 17, 1992
    Assignee: Amoco Corporation
    Inventor: John A. Waynick
  • Catalytic process for producing higher alcohols from synthesis gas
    Patent number: 5096688
    Abstract: A two-stage process for converting synthesis gas to higher alcohols includes an alkali metal-containing cobalt synthesis gas conversion catalyst in a first stage and a copper-containing catalyst in a second stage. The process allows great flexibility in selecting the product mix by changing catalyst compositions and process conditions.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: March 17, 1992
    Assignee: Amoco Corporation
    Inventors: Jeffrey T. Miller, Cecelia A. Radlowski
  • Process for purification of aromatic dicarboxylic acids
    Patent number: 5097066
    Abstract: Aromatic dicarboxylic acids, specifically 4,4'-dicarboxydiphenyl ether, terephthalic acid, 4,4'-carboxybis(benzoic acid) and the like, are purified by dissolving the crude acid in a monocarboxylic acid anhydride, purifying the resulting solution, and recovering a purified acid product therefrom.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: March 17, 1992
    Assignee: Amoco Corporation
    Inventors: Juergen K. Holzhauer, George E. Kuhlmann
  • Copoly arylate from hydroquinone and dihydroxy diphenyl sulfone
    Patent number: 5096997
    Abstract: Described herein are novel polyarylates derived from mixtures of terephthalic and isophthalic acids, hydroquinone and 4,4'-dihydroxydiphenyl sulfone. The instant polyarylates exhibit excellent stress-crack resistance in a wide variety of solvents. Moreover, the materials display very good mechanical and thermal properties.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: March 17, 1992
    Assignee: Amoco Corporation
    Inventors: James H. Kawakami, Lloyd M. Robeson, Robert J. Cotter
  • Water addition to crystallization train to purify terephthalic acid product
    Patent number: 5095146
    Abstract: Optical density of terephthalic acid is reduced in excess of ninety percent by the direct addition of water to selected crystallizers in a precipitative process based on hydrogenation and flask crystallization.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Martin A. Zeitlin, Diane Wilger-Nowicki
  • Process for pseudocumene oxidation to trimellitic acid with mother liquor recycle
    Patent number: 5095141
    Abstract: A process is disclosed for oxidation of pseudocumene to trimellitic acid wherein process residue and bottoms from stripping procedures to recover process solvent are recycled and incorporated in filtrate mother liquor and reinjected into the oxidation reactor at a point in time at least after the first methyl group in the pseudocumene molecule has been oxidized to a carboxy group. Recovery of trimellitic acid is increased, catalyst recovery is increased in a form suitable for immediate recycle to the oxidation reaction, and waste products from the oxidation process are substantially reduced.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Wayne P. Schammel, Chang-Man Park, Donald E. Ruedin, John N. Wood, Leo C. Fende
  • Catalyzed vapor phase process for making alcohols
    Patent number: 5095156
    Abstract: A catalyzed, continuous vapor phase process to convert a C.sub.2 or higher alcohol and, optionally, one or more C.sub.1 or higher alcohols, for example methanol and ethanol, to a mixture containing at least one higher molecular weight alcohol, for example, isobutanol, over a catalyst which is essentially magnesium oxide. The process also may have a lower aldehyde and/or ketone in the feed.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Cecelia A. Radlowski, Gary P. Hagen
  • Method for increasing the efficiency of liquid phase oxidation reactions
    Patent number: 5095143
    Abstract: A method to oxidize an oxidizable component in a liquid phase with an oxygen-containing gas is disclosed. The method comprises mixing the liquid phase and gas phase in a reactor with a rotating agitator element operated at constant power.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Daniel L. Heberer, Paul R. Schiller, Virginia R. Seemann, Michael J. Yerkes
  • Preparation of purified terephthalic acid from waste polyethylene terephthalate
    Patent number: 5095145
    Abstract: A process is disclosed for producing fiber-grade terephthalic acid from waste polyethylene terephthalate film, fiber, bottles, manufacturing residues, and other manufactured articles. The process comprises depolymerizing waste polyethylene terephthalate in an aqueous mixture to obtain crude terephthalic acid having a b*-value less than 10.00 and an RFCVIS value of about 5000, or greater, which is thereupon hydrogenated in aqueous solution for a period of up to 8 hours. Organic and inorganic impurities are retained in the aqueous components. The purified terephthalic acid has a b*-value less than 2.00, a relative fluorescence concentration in visible light (RFCVIS) of less than 2500, metals content less than 100 ppmw and total organic impurities of less than 1000 ppmw.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventor: Bruce I. Rosen
  • Solvent recovery during production of aromatic polycarboxylic acids
    Patent number: 5095142
    Abstract: A process for oxidizing a dialkyl substituted benzene, such as meta-xylene, to an aromatic polycarboxylic acid, such as isophthalic acid, in the presence of a solvent, such as acetic acid, in an oxidation zone followed by an oxidation-crystallization zone, wherein a secondary dehydration tower is used to separate water from the solvent in the overhead stream from the oxidation-crystallization zone and provide a solvent-rich fluid for recycle to the oxidation zone, resulting in expanded capacity of the process coupled with a minimization of captial cost.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventor: Rose M. Janulis
  • Maleic anhydride production
    Patent number: 5095125
    Abstract: A catalyst comprising a phosphorus-vanadium mixed oxide and existing in the form of geometric shapes, such as tablets, provides minimum expansion of the geometric shapes under process reaction conditions, since the catalyst in the form of said geometric shapes has been heated in an inert atmosphere at a temperature within the range of about 343.degree. C. (650.degree. F.) to about 704.degree. C. (1,300.degree. F.) prior to being exposed to an oxygen-containing atmosphere at an elevated temperature. This catalyst is suitable for the oxidation of a hydrocarbon, such as benzene or n-butane, to maleic anhydride.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Muin S. Haddad, Bernard L. Meyers, William S. Eryman
  • Maleic anhydride catalysts
    Patent number: 5093298
    Abstract: Novel maleic anhydride catalysts comprising phosphorus-vanadium oxides and phosphorus-vanadium-co-metal oxides and the process for making such catalysts are disclosed. These catalysts under reaction conditions for the manufacture of maleic anhydride from butane feedstock do not expand to the point of crushing and producing fines. Moreover, the halogen level of such a catalyst is reduced.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: March 3, 1992
    Assignee: Amoco Corporation
    Inventors: Muin S. Haddad, William S. Eryman
  • Molded electrical device and composition therefore
    Patent number: 5093435
    Abstract: This invention is directed to a molded electrical device comprising an electrically conductive pathway and an insulating material, and capable of interconnecting with external circuitry said insulating material comprising a blend of a particular amorphous polymer and a particular crystalline thermoplastic polymer. Also, this invention is directed to a composition suitable for use as an insulating material in an electrical device comprising from about 35 to about 65 weight percent of an amorphous polymer selected from a polyarylethersulfone resin, a polyarylether resin, a polyetherimide or a polyarylate, and from about 65 to about 35 weight percent of a crystalline polymer selected from a poly(arylene sulfide), a polyester or a polyamide.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: March 3, 1992
    Assignee: Amoco Corporation
    Inventors: James E. Harris, Lloyd M. Robeson, Stephen B. Rimsa
  • Monomers and polyketal polymers from such monomers
    Patent number: 5093460
    Abstract: Described herein are novel monomers, polyketals derived from such monomer, improved process for the production of such monomers and a process for producing the polyketals.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: March 3, 1992
    Assignee: Amoco Corporation
    Inventor: Donald R. Kelsey
  • Polymer compositions having improved molding characteristics
    Patent number: 5091464
    Abstract: Disclosed are novel blends of fully aromatic copolyesters which comprise (a) 1-19 parts by weight of a polyester comprising recurring moieties of dihydroxybenzene, nonvicinal benzene dicarboxylate, para oxybenzoate to (b) 1 part by weight of a polyester comprising recurring moieties of diphenol, nonvicinal benzene dicarboxylate, para oxybenzoate; wherein the polyester (a) has a melting point in the range of about 340 C. to 400 C., a crystallization temperature of from about 300-340 C., and a crystallization rate of at least 1,000 counter per minute. The blends display improved surface properties, particularly improved blistering resistance.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: February 25, 1992
    Assignee: Amoco Corporation
    Inventors: Paul J. Huspeni, Richard Layton, Paul D. Frayer
  • Acid treatment of kerogen-agglomerated oil shale
    Patent number: 5091076
    Abstract: A kerogen-agglomerated oil shale is contacted with an acid-containing solution prior to economically upgrade the oil shale prior to retorting. The kerogen is agglomerated by contacting the oil shale with a two phase mixture of an organic liquid and water to form kerogen-rich agglomerates and mineral-rich particles. Acids suitable for use in this invention include any acid capable of forming a soluble metallic salt, preferably sulfurous acid.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: February 25, 1992
    Assignee: Amoco Corporation
    Inventors: Bernard Y. C. So, Terry L. Marker, Gene E. Tampa
  • Nucleotide compositions with linking groups
    Patent number: 5091519
    Abstract: The present invention includes nucleotide compositions having linking groups and the use and manner of making the nucleotide compositions. The nucleotide compositions are used to attach nonisotopic label moieties to nucleic acid probes.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: February 25, 1992
    Assignee: Amoco Corporation
    Inventor: Kenneth Cruickshank
  • Wholly aromatic polyester of isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol
    Patent number: 5089594
    Abstract: Aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol are described. The five monomers ae used in well-specified proportions and yield polymers that display an excellent overall combination of mechanical and thermal properties. The subject copolyesters have melting points of at least about 260.degree. C.; their heat distortion temperatures are at least about 200.degree. C. they have fiber ratings of up to 3. The novel polymers can be melt-fabricated using standard injection molding, extrusion and melt-spinning techniques.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: February 18, 1992
    Assignee: Amoco Corporation
    Inventors: Brian A. Stern, Markus Matzner, Richard Layton
  • Catalytic cracking unit with external cyclone and oil quench system
    Patent number: 5089235
    Abstract: Effective quenching is provided in a catalytic cracking unit to increase product yield and decrease thermal cracking. For increased benefits, the quench is injected at special locations. In the illustrated embodiment, the quench is injected into the oil product immediately downstream of an external gross cut separator before the product enters a disengaging vessel.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: February 18, 1992
    Assignee: Amoco Corporation
    Inventors: John G. Schwartz, F. William Hauschildt, George E. Quinn, John M. Forgac
  • Exopy resin with aromatic oligomer and rubber particles
    Patent number: 5089560
    Abstract: Fiber reinforced composite structures based on epoxy resin formulations having a phase-separated or multiphase morphology when cured are effectively toughened by adding preformed carboxylated rubber particles to the matrix resin prior to curing the composite.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: February 18, 1992
    Assignee: Amoco Corporation
    Inventors: Hugh C. Gardner, Richard H. Newman-Evans