Patents Represented by Attorney William C. Long

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  • Tertiary alkyl acetate preparation
    Patent number: 7253305
    Abstract: Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed acetic anhydride and acetic acid stream is recycled to the esterfication.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: August 7, 2007
    Inventor: Stephen H. Harris
  • Purification of N-(2-hydroxyethyl)-2-pyrrolidone
    Patent number: 7238260
    Abstract: N-(2-hydroxyethyl)-2-pyrrolidone (HEP) is purified by a distillation sequence in which the purified HEP is recovered as a side stream without being separated as an overhead at any point in the procedure.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: July 3, 2007
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Andrew P. Kahn, David W. Leyshon, Shaw-Chan Lin, Edward P. Carey
  • Propylene oxide catalyst and use
    Patent number: 7232783
    Abstract: A process is provided for the production of a noble metal on TS-1 catalyst useful for the production of propylene oxide wherein TS-1 from hydrothermal crystallization has noble metal dispersed thereon, the resulting material is spray dried and template used in the crystallization is removed, the resulting product is treated with hydrogen to form active catalyst for propylene oxide production.
    Type: Grant
    Filed: July 2, 2005
    Date of Patent: June 19, 2007
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Bernard Cooker, Roger A. Grey, Edrick Morales
  • Catalyst preparation
    Patent number: 7182932
    Abstract: A TS-1 catalyst suitable for the production of oxirane compounds is prepared by subjecting conventionally formed TS-1 to a size reduction treatment such as milling such that the average particle size weighted by volume of the TS-1 is reduced to less than 10 microns in diameter and the size reduced TS-1 is spray dried.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: February 27, 2007
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Wilson H. Onimus, Bernard Cooker, Edrick Morales
  • Separation process
    Patent number: 7084284
    Abstract: Phosphine and/or phosphine oxide promoters are effectively separated from propylene oxide reaction solvents through use of a membrane effective to retain the phosphine and/or phosphine oxide.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: August 1, 2006
    Assignee: Lyondell Chemical Technology, L.P.
    Inventor: Jay F. Miller
  • Carbonate decolorization
    Patent number: 7078539
    Abstract: The color of organic carbonate such as ethylene carbonate or propylene carbonate is substantially improved by ultraviolet irradiation.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: July 18, 2006
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Paul E. Galick, Jude T. Ruszkay
  • Purification on methyl tertiary butyl ether
    Patent number: 7022885
    Abstract: The present invention relates to purification of an MTBE process stream by contact in the liquid phase with a large pore zeolite such as 13X or Zeolite Y.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: April 4, 2006
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Lawrence J. Karas, Lawrence M. Candela, Andrew P. Kahn
  • Removal of propylene glycol and/or propylene glycol ethers from aqueous streams
    Patent number: 7002026
    Abstract: An aqueous stream containing propylene glycol and/or ethers thereof is treated by counter current liquid—liquid extraction with propylene and/or propane to separate the propylene glycol and/or ether from the aqueous stream.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: February 21, 2006
    Assignee: Lyondell Chemical Technology, L.P.
    Inventor: John H. Speidel
  • Production of butanediol
    Patent number: 6969780
    Abstract: The catalytic hydrogenation of HBA and/or HMPA is improved by either or both of (1) increasing the temperature in the hydrogenation zone from about 50 to 70° C. at the inlet to above 80° C. at the outlet and (2) raising the pH of the hydrogenation feed to 4.5–6.0 before hydrogenation.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: November 29, 2005
    Assignee: Lyondell Chemical Technology, L.P.
    Inventors: Walter S. Dubner, Wilfred Po-sum Shum
  • Dense phase oxidation of benzene
    Patent number: 6936740
    Abstract: Phenol is formed by reaction of oxidant and benzene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: August 30, 2005
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Robert N. Cochran, Jay F. Miller, Eric John Beckman, Sarah Emma Jones
  • Vent recovery system
    Patent number: 6914167
    Abstract: A process for absorbing propylene from a gaseous propylene oxide process purge stream wherein propane liquid is used to absorb the propylene.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: July 5, 2005
    Assignee: Arco Chemical Technology, L.P.
    Inventors: John C. Jubin, Jr., Te Chang
  • Production of N-vinyl pyrrolidone
    Patent number: 6906200
    Abstract: N-vinyl pyrrolidone is produced by dehydration of N-hydroxyethyl pyrrolidone in the presence of an amorphous mixed oxide catalyst such as an amorphous Ca/Zn oxide catalyst.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: June 14, 2005
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Andrew P. Kahn
  • Propylene oxide process
    Patent number: 6884898
    Abstract: Propylene oxide is formed by reaction of propylene with molecular oxygen in a high boiling solvent containing slurried solid catalyst, the light components are flashed and the remaining liquid containing slurried catalyst is recycled.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: April 26, 2005
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Jay F. Miller
  • Product recovery from supercritical mixtures
    Patent number: 6870060
    Abstract: Oxidation products are recovered from a mixture of the products in a dense phase or supercritical solvent by a liquid—liquid extraction at dense phase conditions.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: March 22, 2005
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Robert N. Cochran, Jay F. Miller
  • Propylene oxide process
    Patent number: 6867312
    Abstract: Propylene oxide is formed in a two step reaction wherein in a first step oxygen and hydrogen are reacted in the absence of propylene to form hydrogen peroxide and in a second step propylene is reacted with the formed hydrogen peroxide to form propylene oxide, the same solid noble metal on TS-1 catalyst being used to catalyze the reaction in each step.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: March 15, 2005
    Assignee: Arco Chemical Technology, L.P.
    Inventors: John C. Jubin, Jr., Roger A. Grey
  • Ethylene oxide catalyst
    Patent number: 6762311
    Abstract: A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of critical amounts of an alkali metal component and a sulfur component, the catalyst being essentially free of rhenium and transition metal components; optionally the catalyst contains a fluorine component.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: July 13, 2004
    Assignee: Scientific Design Co., Ltd.
    Inventors: Nabil Rizkalla, Serguei Pak, Andrew D. Schmitz
  • Peroxide impurities removal
    Patent number: 6755979
    Abstract: A propylene oxide/styrene monomer aqueous purge stream is contacted with a catalyst at conditions effective to decompose peroxides contained therein, and oxygen formed by the decomposition swept from the decomposition with a nitrogen vapor stream from ethylbenzene oxidation.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: June 29, 2004
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Carl L. Williams, Shaw-Chan Lin, David W. Leyshon, Lawrence M. Candela
  • Ethylene oxide catalyst
    Patent number: 6750173
    Abstract: The invention relates to an ethylene oxide catalyst comprised of silver deposited on an alumina carrier which has been treated to remove at least 25% of the surface sodium ions and replace the removed sodium ions with up to 10 ppm of lithium ions and to the preparation thereof.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: June 15, 2004
    Assignee: Scientific Design Company, Inc.
    Inventors: Nabil Rizkalla, Errrol Bornn, Charles W. Zulauf
  • Dense phase epoxidation
    Patent number: 6710192
    Abstract: Propylene oxide is formed by reaction of hydrogen, oxygen, and propylene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: March 23, 2004
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Dan Hancu, Eric John Beckman, Tiberiu Danciu
  • Epoxidation process
    Patent number: 6710194
    Abstract: Propylene oxide is produced by liquid phase reaction of propylene oxygen and hydrogen in contact with a solid epoxidation catalyst at elevated temperature and pressure, the reaction conditions being regulated to provide a weight ratio of dissolved oxygen to dissolved hydrogen in the liquid reaction mixture of at least 16.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: March 23, 2004
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Robert N. Cochran, Prakash G. Balan, Mark A. Liepa, Bernard Cooker