Patents Represented by Attorney William C. Long

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  • Tellurium-containing molecular sieves
    Patent number: 6042807
    Abstract: Zeolites containing silicon, titanium and tellurium oxides are prepared by a hydrothermal method which yields materials containing exceptionally high levels of catalytically active Ti species. Following calcination, the molecular sieves are active and selective catalysts for the epoxidation of olefins using hydrogen peroxide or organic hydroperoxide. The zeolites may have framework structures of varying topology, including MFI, MEL, BEA, ZSM-48, MTW or MCM-41.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: March 28, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Mahmoud K. Faraj
  • Epoxidation process
    Patent number: 6037484
    Abstract: The selectivity of an olefin epoxidation process catalyzed by a titanium-containing zeolite is improved by performing the epoxidation in the presence of a non-ionic tertiary amine or tertiary amine oxide additive. For example, when hydrogen peroxide is reacted with propylene in the presence of TS-1 titanium silicalite to form propylene oxide, non-selective ring-opening reactions of the propylene oxide are suppressed when low concentrations of 2,6-lutidine or other substituted pyridines are added to the hydrogen peroxide feed.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: March 14, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Roger A. Grey
  • Ester preparation
    Patent number: 6018076
    Abstract: An olefin such as isobutylene is reacted with a carboxylic acid to produce the ester in the presence of an alkanol modifying agent effective to suppress olefin polymerization, at least part of the modifying agent being formed in situ by reaction of the olefin and water.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 25, 2000
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Michael J. Szady, Ahmad Soltani-Ahmadi
  • Epoxidation process
    Patent number: 6008388
    Abstract: The selectivity of an olefin epoxidation catalyzed by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a nitrogen compound to the reaction mixture. The epoxidation utilizes hydrogen and oxygen in addition to the olefin.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: December 28, 1999
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Ralph M. Dessau, Andrew P. Kahn, Roger A. Grey, C. Andrew Jones, Jennifer D. Jewson
  • Epoxidation process
    Patent number: 6005123
    Abstract: The selectivity of an olefin epoxidation catalized by a noble metal-modified titanium or vanadium zeolite is greatly enhanced by the addition of a phosphorus, sulfur, selenium or arsenic compound to the reaction mixture. The epoxidation utilizes hydrogen and oxygen in addition to the olefin.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: December 21, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Ralph M. Dessau, Andrew P. Kahn, Roger A. Grey
  • Esterified propoxylated polyol process
    Patent number: 6002030
    Abstract: A process is provided for the fatty acid esterification of propoxylated glycerin wherein fatty acids stripped from the esterifier and/or fatty acids stripped from the esterification product are scrubbed by contact with a scrubbing liquid which is maintained at a temperature above the fatty acid melting point.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: December 14, 1999
    Assignee: ARCO Chemical Technology, L.P.
    Inventor: Jon R. Valbert
  • Purification process
    Patent number: 5993673
    Abstract: A propylene oxide/styrene monomer aqueous purge stream is contacted with a solid iron promoted alumina catalyst at conditions effective to decompose peroxides contained therein.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: November 30, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Thomas I. Evans, David W. Leyshon
  • Ester preparation
    Patent number: 5994578
    Abstract: An olefin such as isobutylene is reacted with a carboxylic acid to produce the ester in the presence of a modifying agent effective to suppress olefin polymerization, the feed to the reaction containing not more than 0.7 mols water per mol of olefin.
    Type: Grant
    Filed: February 11, 1998
    Date of Patent: November 30, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Lawrence J. Karas
  • Cement composition
    Patent number: 5989336
    Abstract: A cement slurry composition suitable for well bore cementation is provided containing as an essential component a synthetic hectorite clay in amount sufficient to reduce free water formation and solids segregation.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: November 23, 1999
    Assignee: Atlantic Richfield Company
    Inventors: Robert B. Carpenter, J. Benjamin Bloys, David L. Johnson
  • Method of making a water reducing additive for cement
    Patent number: 5985989
    Abstract: Substances useful as water reducing and superplasticizer additives for cement compositions are formed by in situ polymerization of one or more ethylenically unsaturated acid monomers such as acrylic acid or maleic anhydride in a reaction medium comprising a polyether such as polypropylene glycol or a copolymer of ethylene oxide and propylene oxide to form a carboxylic acid polymer, followed by reaction of the polyether and carboxylic acid polymer. The composition and properties of the resulting additives may be readily varied as desired through the use of different acid monomers, polyethers, reaction conditions, reagent proportions and the like.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 16, 1999
    Assignee: ARCO Chemical Technology, LP
    Inventors: Edward T. Shawl, Xinhau Zhou
  • Process for the preparation of fatty acid-esterified propoxylated glycerin
    Patent number: 5986117
    Abstract: A convenient method of obtaining useful esterified propoxylated glycerin fat substitutes from readily available triglycerides such as fats and oil is provided wherein a triglyceride is reacted with a propoxylated glycerin under conditions effective to remove glycerin during such reaction.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: November 16, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Charles F. Cooper
  • Catalyst compositions derived from titanium-containing molecule sieves
    Patent number: 5977009
    Abstract: Useful catalyst compositions are produced by treating substituted molecular sieves with reactive titanium compounds such as titanium tetrahalides, preferably in the vapor phase at elevated temperatures. The molecular sieve starting materials contain tellurium, boron or germanium oxides in addition to silicon and titanium oxides. Olefins are efficiently transformed to epoxides using these catalyst compositions and an oxidizing agent such as hydrogen peroxide or an organic hydroperoxide.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 2, 1999
    Assignee: Arco Chemical Technology, LP
    Inventor: Mahmoud K. Faraj
  • Allyl alcohol purification
    Patent number: 5972173
    Abstract: Mixtures of allyl alcohol and n-propanol are separated by extractive distillation using propylene carbonate, N-methyl pyrrolidone or gamma-butyrolactone extractive distillation solvent.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: October 26, 1999
    Assignee: Arco Chemical Technology, LP
    Inventors: Te Chang, George F. Rowell
  • Propylene oxide production
    Patent number: 5973171
    Abstract: An integrated process is provided for the production of propylene oxide from propane wherein propane is dehydrogenated to propylene and hydrogen and the resulting propylene, propane, and hydrogen mixture together with added oxygen is reacted over a palladium on titanium silicilite catalyst to form propylene oxide, the molar ratio of oxygen to hydrogen in the reaction feed being at least about 2/1.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: October 26, 1999
    Assignee: ARCO Chemical Technology, LP
    Inventors: Robert N. Cochran, John C. Jubin, Jr., Mark A. Liepa, Robert Nedwick, Rangasamy Pitchai, W. Wayne Wentzheimer
  • Ethylene oxide catalyst
    Patent number: 5958824
    Abstract: A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component, a sulfur component, and a lanthanide component, the catalyst being essentially free of rhenium and transition metal components; optionally the catalyst contains a fluorine component.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: September 28, 1999
    Assignee: Scientific Design Co., Inc.
    Inventors: Nabil Rizkalla, Rita Klein, Stephen Bruce Milne
  • Methane conversion process
    Patent number: 5959170
    Abstract: A method for converting methane to higher hydrocarbon products and coproduct water wherein a gas comprising methane and a gaseous oxidant are contacted with a nonacidic catalyst at temperatures within the range of about 700 to 1200.degree. C. A preferred catalyst comprises an alkali component associated with a support material. Results obtained over alkali-promoted solids are enhanced when the contacting is conducted in the presence of halogen promoters.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: September 28, 1999
    Assignee: Atlantic Richfield Company
    Inventor: Howard P. Withers, Jr.
  • Ethylene oxide catalyst
    Patent number: 5945551
    Abstract: A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component, a sulfur component, a germanium or tin component, and a fluorine component the catalyst being essentially free of rhenium and transition metal compounds.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: August 31, 1999
    Assignee: Scientific Design Company, Inc.
    Inventors: Nabil Rizkalla, Rita Klein, Stephen Bruce Milne
  • Epoxidation catalyst and process
    Patent number: 5932751
    Abstract: A titanium/silica epoxidation catalyst is prepared from silica which has been treated with strong aqueous acid solution, the catalyst is especially useful for propylene oxide production.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: August 3, 1999
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Kevin M. Carroll, Yuan-Zhang Han, Edrick Morales
  • Phosphorus/vanadium catalyst preparation
    Patent number: 5922637
    Abstract: The invention provides an improved method for the production of vanadium/phosphorous mixed oxide catalysts, a vanadium +5 solid compound first being digested in an organic solvent at anhydrous conditions, water then being added and the resulting aqueous mixture containing suspended solid vanadium compound being digested to form the catalyst precursor.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: July 13, 1999
    Assignee: Scientific Design Company, Inc.
    Inventor: Arie Bortinger
  • Cellulose oxidation
    Patent number: 5914003
    Abstract: Cellulose is effectively oxidized with nitrogen dioxide in a hydrofluoroether solvent.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: June 22, 1999
    Assignee: Mach I, Inc.
    Inventors: Brian M. Kosowski, Bernard M. Kosowski