Patents Represented by Attorney E. C. Trautlein

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  • Iodide removal process
    Patent number: 5561168
    Abstract: This invention relates to the use of ion exchange resins having metal-exchanged thiol functional groups in removing iodide impurities from carboxylic acids and/or carboxylic acid anhydrides. More particularly, this invention provides a process for removing iodide impurities from liquid carboxylic acids and/or carboxylic acid anhydrides using ion exchange resins in which thiol functional groups have been exchanged with silver, palladium or mercury.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: October 1, 1996
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Barry B. Fish, William D. Prince, Michael P. Spratt
  • Process for stabilizing phosphite ligands in hydroformylation reaction mixtures
    Patent number: 5364950
    Abstract: This invention provides a process for stabilizing a phosphite ligand against degradation in a homogeneous reaction mixture containing a Group VIII transition metal catalyst and the phosphite ligand, said process comprising adding to the reaction mixture an epoxide in an amount from 0.001 to 5 weight percent based on the total weight of the reaction mixture to reduce the degradation of the ligand.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: November 15, 1994
    Assignee: Union Carbide Chimicals & Plastics Technology Corporation
    Inventors: James E. Babin, John M. Maher, Ernst Billig
  • Alkenyl alkanoate production
    Patent number: 5342987
    Abstract: This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are characterized by a reduced sodium content which results in increased catalyst activity. The reduced sodium content is obtained by washing the catalyst, at a particular intermediate point in its production, with a cation exchange solution.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: August 30, 1994
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: William J. Bartley
  • Method for measuring reflux flow in a distillation process
    Patent number: 5314587
    Abstract: A method and apparatus are disclosed wherein a standpipe mounted in an accumulator outside the operating zone of a distillation column is used in conjunction with a liquid level controller to measure condensate collected in the accumulator and to change the amount of energy provided to the distillation column in response to changes in the level of condensate collected in the accumulator.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: May 24, 1994
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Gerald L. Smith
  • Hydroformylation process for producing 1,6-hexanedials
    Patent number: 5312996
    Abstract: This invention relates to a hydroformylation process for producing a 1,6-hexanedial which comprises reacting a butadiene with hydrogen and carbon monoxide in the presence of a catalytic amount of rhodium complexed with certain poly-phosphite ligands to achieve high conversions of the butadiene to the 1,6-hexanedial.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: May 17, 1994
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Diane L. Packett
  • Iodide removal process
    Patent number: 5220058
    Abstract: This invention relates tot he use of ion exchange resins having metal-exchanged thiol functional groups in removing iodide impurities from carboxylic acids and/or carboxylic acid anhydrides. More particularly, this invention provides a process for removing iodide impurities from liquid carboxylic acids and/or carboxylic acid anhydrides using ion exchange resins in which thiol functional groups have been exchanged with silver, palladium or mercury.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 15, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Barry B. Fish, William D. Prince, Michael P. Spratt
  • Apparatus for measuring reflux flow in a distillation column
    Patent number: 5205909
    Abstract: A method and apparatus are disclosed wherein a standpipe mounted in an accumulator outside the operating zone of a distillation column is used in conjunction with a liquid level controller to measure condensate collected in the accumulator and to change the amount of energy provided to the distillation column in response to changes in the level of condensate collected in the accumulator.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: April 27, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Gerald L. Smith
  • Higher aldehyde separation process
    Patent number: 5196596
    Abstract: This invention relates to a process for separating an aldehyde that contains at least seven carbon atoms and that is free of alpha substituents from a solution containing the aldehyde and a non-polar organic liquid which process comprises contacting the solution with water under conditions such that a solid hydrate of the aldehyde forms and separating the solid hydrate from the solution. This invention also relates to novel hydrates so produced.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: March 23, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Anthony G. Abatjoglou
  • Alkenyl alkanoate catalyst process
    Patent number: 5189004
    Abstract: This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are characterized by a reduced sodium content which results in increased catalyst activity. The reduced sodium content is obtained by washing the catalyst with water or with an aqueous solution of a potassium promoter after it has been impregnated with a potassium promoter.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: February 23, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: William J. Bartley
  • Catalysts for alkenyl alkanoate production
    Patent number: 5179057
    Abstract: This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are characterized by a reduced sodium content which results in increased catalyst activity. The reduced sodium content is obtained by washing the catalyst, at a particular intermediate point in its production, with a cation exchange solution.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: January 12, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: William J. Bartley
  • Production of alkenyl alkanoate catalysts
    Patent number: 5179056
    Abstract: This invention provides a process for producing improved catalysts for the production of alkenyl alkanoates by the reaction of an alkene, an alkanoic acid and an oxygen-containing gas. The catalysts contain palladium, gold and a potassium promoter and are characterized by a reduced sodium content which results in increased catalyst activity. The reduced sodium content is obtained by using essentially sodium-free starting materials in the process for producing the catalysts.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: January 12, 1993
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: William J. Bartley
  • Polymer compositions stabilized with polysiloxanes containing sterically hindered heterocyclic moiety
    Patent number: 4895885
    Abstract: The present invention relates to olefin polymers stabilized with polysiloxanes containing sterically hindered heterocyclic moieties, said polysiloxanes represented by the general formula M*.sub.v D.sub.x D*.sub.y T.sub.z Q.sub.w M*.sub.v.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: January 23, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: George N. Foster, Herbert E. Petty, Roswell E. King, III