Patents Represented by Attorney William C. Long

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  • Alkylene carbonate purification
    Patent number: 6696579
    Abstract: An alkylene carbonate such as propylene carbonate is contacted with an alumina or silica solid adsorbent having a surface area of 50-400 m2/g such as basic alumina to remove impurities therefrom and improve color and color stability.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: February 24, 2004
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Andrew P. Kahn
  • Epoxidation system with fixed bed reactors
    Patent number: 6583300
    Abstract: A process for the production of an oxirane compound by reaction of an olefin with a hydroperoxide reactant in the presence of a solid epoxidation catalyst, wherein the olefin and hydroperoxide reactants are first reacted in it least two fixed bed reactors packed with fresh catalyst, olefin being fed serially to said reactors and hydroperoxide reactant being fed in parallel to said reactors and thereafter the reactor effluent from the last of said reactors is passed to as least one further fixed bed reactor packed with epoxidation catalyst which has been at least partially deactivated.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: June 24, 2003
    Assignee: Arco Chemical Technology, L.P.
    Inventors: David W. Leyshon, John C. Jubin, Jr., Richard J. Wolff
  • Adsorbent bed loading and regeneration
    Patent number: 6563010
    Abstract: The process for removing impurities from a liquid by contact with a solid adsorbent using parallel contact adsorbent beds such that when one bed is contacting the liquid the parallel bed is being regenerated by contact with heated inert gas, wherein during changeover of the beds inert gas is transferred from the regenerated bed to the spent bed during the period that liquid is being drained from the spent bed.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: May 13, 2003
    Assignee: ARCO Chemical Technology, L.P.
    Inventor: Mark A. Liepa
  • Method for highly exothermic epoxidation reactions
    Patent number: 6562987
    Abstract: A process is provided for the production of oxirane compounds by reaction of an olefin such as propylene with an organic hydroperoxide using a solid contact catalyst, characterized in that a series of separate reaction zones are used, each packed with epoxidation catalyst, and the concentration of hydroperoxide in the feed to each reaction zone is maintained below 8 wt %.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: May 13, 2003
    Assignee: ARCO Chemical Technology, L.P.
    Inventor: David W. Leyshon
  • Solid epoxidation catalyst and preparation
    Patent number: 6555493
    Abstract: The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: April 29, 2003
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Bernard Cooker, Jennifer D. Jewson, Wilson H. Onimus
  • Two stage flash for hydrocarbon removal
    Patent number: 6533843
    Abstract: Scrubber liquid from an ethylene oxide process rich in bicarbonate and dissolved ethylene is flashed in two stages to separate ethylene containing vapor from bicarbonate rich solution reduced in ethylene content.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: March 18, 2003
    Assignee: Scientific Design Company, Inc.
    Inventors: Barry Billig, Chun Chan
  • Polymeric cyclodextrin nitrate esters
    Patent number: 6527887
    Abstract: Cyclodextrin polymers are nitrated to provide novel nitrate esters of cyclodextrin polymers which are useful for encapsulating explosives to provides energetic compositions of reduced sensitivity; a new method for the preparation of cyclodextrin polymers is provided.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: March 4, 2003
    Assignee: Mach I, Inc.
    Inventors: Anja Ruebner, Gary L. Statton, John P. Consaga
  • Epoxidation process
    Patent number: 6512129
    Abstract: Insoluble resinous sodium materials are separated from a hydroperoxide/olefin epoxidation feed by contact with a fine screen or a bed of coalescing solids.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: January 28, 2003
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Xiangmin Li, David W. Leyshon
  • Propylene oxide purification
    Patent number: 6500311
    Abstract: A mixture of propylene oxide and methanol is separated by liquid/liquid extraction using water and a hydrocarbon such as n-octane as extractive solvents.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: December 31, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Gary A. Sawyer
  • Impurities separation by distillation
    Patent number: 6478930
    Abstract: A distillation procedure is provided for the separation of impurities from organic materials such as glycols and glycol ethers whereby a liquid stripping component is interfaced into a distillation column with or below the organic material introduction, heat being provided by a reboiler, the stripping component and impurities being removed overhead.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: November 12, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Vijai P. Gupta
  • Heat recovery procedure
    Patent number: 6452027
    Abstract: The present invention provides a process treating the cycle gas from an ethylene oxide reactor to avoid heat losses in a carbonate scrubbing system as well as glycol formation in the carbonate scrubbing and catalyst contamination upon cycle gas recycle.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: September 17, 2002
    Assignee: Scientific Design Company, Inc.
    Inventors: Barry Billig, James Mann
  • Sack from a flexible material and method for its formation
    Patent number: 6428209
    Abstract: The invention relates to a sack from a flexible material, such as paper and/or plastic material, which sack is provided with a longitudinal closing seam and/or a transverse closing seam, which connects to each other layers of material that lie on each other. According to the invention the closing seam is formed by attaching to each other the layers of material that lie on each other by plastic deformation of a part of said layers, without adding an adhesive such as glue and without adding heating energy. The invention also relates to a method for forming such a sack.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: August 6, 2002
    Assignee: Frantschach Industrial Packaging Netherlands N.V.
    Inventor: Paulus Johannes Maria Janssen
  • Purification of tertiary butyl alcohol
    Patent number: 6417412
    Abstract: The present invention relates to purification of a tertiary butyl alcohol process stream by contact in the liquid phase with a large pore zeolite such as 13X in the sodium form.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: July 9, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Andrew P. Kahn, Lawrence J. Karas
  • Tertiary butyl acetate recovery
    Patent number: 6375804
    Abstract: The present invention provides a distillation separation method whereby tertiary butyl acetate is separated by distillation as an overhead stream from a bottoms acetic acid stream with the proviso that water is incorporated in the system such that the bottoms acetic acid stream contains water in amount of 0.1 to 5 wt %.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: April 23, 2002
    Assignee: ARCO Chemical Technology, L.P.
    Inventor: Vijai P. Gupta
  • Cobalt-catalyzed process for preparing 1,3-propanediol
    Patent number: 6376720
    Abstract: Ethylene oxide is hydroformylated to 3-hydroxypropanal using a non-phosphine-ligated cobalt catalyst and diamine promoter.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: April 23, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Yuan-Zhang Han
  • Cobalt-catalyzed process for preparing 1,3-propanediol
    Patent number: 6376724
    Abstract: Ethylene oxide is hydroformylated to 3-hydroxypropanal using a non-phosphine-ligated cobalt catalyst and a primary or secondary amine promoter.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: April 23, 2002
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Yuan-Zhang Han
  • Selective olefin oligomerization
    Patent number: 6376731
    Abstract: A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and lower alkane diluent; advantageously the isobutylene is derived from the dehydration of tertiary butyl alcohol.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: April 23, 2002
    Assignee: Arco Chemical Technology, l.p.
    Inventors: Thomas I. Evans, Lawrence J. Karas, Ramesh Rameswaran
  • Impurities removal
    Patent number: 6329561
    Abstract: The method of producing high purity isooctane useful as a gasoline blending component from diisobutylene or isooctane contaminated with minor amounts of oxygenated impurities which comprises converting the impurities at conditions of elevated temperature and pressure to hydrocarbon and water and recovering the purified diisobutylene or isooctane stream.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: December 11, 2001
    Assignee: Equistar Chemicals, LP
    Inventors: Kenneth M. Webber, Mark P. Kaminsky, Andrew P. Kahn
  • Tellurium-containing molecular sieves
    Patent number: 6329537
    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: February 16, 2000
    Date of Patent: December 11, 2001
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Mahmoud K. Faraj
  • Cobalt-catalyzed process for preparing 1,3-propanediol
    Patent number: 6323374
    Abstract: Ethylene oxide is hydroformylated to 3-hydroxypropanal using a non-phosphine-ligated cobalt catalyst and an amide promoter.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: November 27, 2001
    Assignee: Arco Chemical Technology, L.P.
    Inventor: Yuan-Zhang Han