Patents Represented by Attorney J. Frederick Thomsen

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  • Process for the preparation of 1,4-disubstituted 2-butenes
    Patent number: 5189199
    Abstract: A process is disclosed for the preparation of 1,4-dioxy-2-butenes by reacting 3,4-epoxy-1-butene with an oxygen nucleophile in the presence of a Pd(O) complex catalyst.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: February 23, 1993
    Assignee: Eastman Kodak Company
    Inventor: Stephen A. Godleski
  • Low pressure catalytic hydrogenation of carbonyl-containing compounds and supported catalysts therefor
    Patent number: 5185476
    Abstract: Disclosed are novel catalysts useful for the hydrogenation of carbonyl-containing compounds at mild conditions of temperature and pressure to produce alcohols or amines is disclosed. The catalysts comprise palladium and zinc on a catalyst support material and are obtained by the steps of:(a) providing a catalyst support material on which is deposited zero-valent palladium in a uniformly and highly dispersed form;(b) contacting the palladium-bearing support material of (a) with zinc or a reducible compound thereof; and, preferably,(c) heating the palladium- and zinc-bearing support of (b) at a temperature of about 200.degree. to 400.degree. C. in the presence of an oxygen-containing gas.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: February 9, 1993
    Assignee: Eastman Kodak Company
    Inventor: Bruce L. Gustafson
  • Purification of quinones
    Patent number: 5180842
    Abstract: Disclosed is a process for removing chlorine-containing impurities from quinone compounds such as p-bezonquinone. The process involves extracting a quinone compound containing 1000 ppm or more chlorine with heptane, cyclohexane or a mixture thereof and separating the quinone compound from the extraction mixture. The process provides a means for obtaining quinone compounds containing 50 ppm or less chlorine.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: January 19, 1993
    Assignee: Eastman Kodak Company
    Inventors: Yeong-Jen Kuo, Michael Bellas
  • Continuous process for the recovery of 2 ethylhexanal and a tertiary amine from a mixture comprising 2-ethyl-2-(hydroxymethyl) hexanal, 2-ethylhexanal, tertiary amine and water
    Patent number: 5177267
    Abstract: Disclosed is a continuous process for the manufacture of 2-ethyl-2-(hydroxymethyl)hexanal wherein 2-ethylhexanal, formaldehyde and a tertiary amine are continuously fed to a reaction zone and crude product comprising an aqueous phase and an organic phase containing 2-ethyl-2-(hydroxymethyl)hexanal and 2-ethylhexanal is continuously removed from the reaction zone. Also disclosed are processes for (1) the azeotropic distillation of the organic phase of the crude product whereby unreacted 2-ethylhexanal is recovered and (2) the catalytic hydrogenation of the refined, organic phase of the crude product to produce 2-butyl-2-ethyl-1,3-propanediol.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: January 5, 1993
    Assignee: Eastman Kodak Company
    Inventors: Don L. Morris, William A. Beavers, William E. Choate
  • Method of quantitative analysis of organophosphorus compounds
    Patent number: 5177019
    Abstract: A novel method quantitatively analyzes certain organophosphorus compounds present in mixtures of the organophosphorus compounds, a Group VIII metal and an inert solvent using gas chromatography techniques. The method involves the conversion of a catalytically-active form of the Group VIII metal to a cyano complex prior to gas chromatography analysis. Compositions are also described which are useful in the gas chromatography analysis.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: January 5, 1993
    Assignee: Eastman Kodak Company
    Inventors: Thomas J. Devon, Jerry C. Dobbs
  • Recovery of acetyl values from ethylidene diacetate
    Patent number: 5175362
    Abstract: Disclosed is a process for the recovery of acetyl values from an ethylidene diacetate stream obtained from an acetic anhydride production system. The process comprises hydrolyzing ethylidene diacetate in a liquid phase, hydrolysis zone containing a non-volatile, acidic catalyst and maintained under boiling conditions to obtain a mixture of acetaldehyde, acetic acid and water and then oxidizing the mixture in a liquid phase, oxidation zone containing a cobalt oxidation catalyst to obtain a mixture of acetic acid and water. The process optionally includes a means for reducing substantially the concentration of iodine in the EDA used in the process.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: December 29, 1992
    Assignee: Eastman Kodak Company
    Inventors: Carl F. Fillers, Eric D. Middlemas, Hugh M. Thompson, Jr., Jerry A. Barron, William T. Brown
  • Process for the manufacture of 2,2,4,4-tetramethycyclobutanediol
    Patent number: 5169994
    Abstract: Disclosed is a novel process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol commencing with the pyrolysis of isobutyric anhydride to produce dimethylketene. Dimethylketene is absorbed into certain carboxylate ester solvents which function as the process solvents for subsequent dimerization of the dimethylketene to 2,2,4,4-tetramethylcyclobutanedione followed by the catalytic hydrogenation of the dione to the diol product.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: December 8, 1992
    Assignee: Eastman Kodak Company
    Inventors: Charles E. Sumner, Jr., Bruce L. Gustafson, Jennifer R. Knight
  • Poly (ether-ketone)
    Patent number: 5155203
    Abstract: Disclosed is a poly(ether-ketone) having an inherent viscosity of at least 0.4 and consisting of the repeating unit ##STR1## wherein each Ph is 1,4-phenylene. The poly(ether-ketone) is derived from two specific reactants, 1,3-bis-(4-phenoxybenzoyl)benzene and 4,4'-oxydibenzoic acid which may be reacted in the presence of methanesulfonic acid and phosphorus pentoxide.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: October 13, 1992
    Assignee: Eastman Kodak Company
    Inventors: W. Ronald Darnell, Winston J. Jackson, Jr.
  • Selective monoepoxidation of styrene, styrene analogs, and styrene derivatives to the corresponding oxide with molecular oxygen
    Patent number: 5145968
    Abstract: Process is disclosed for the slective monoepoxidation of styrene, styrene analogs, and styrene derivatives. Such compounds are contacted with an oxygen-containing gas in the presence of a promoted, optionally supported silver catalyst under defined reaction conditions, thereby selectively producing opoxides in good yield.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: September 8, 1992
    Assignee: Eastman Kodak Company
    Inventors: John R. Monnier, Peter J. Muehlbauer
  • Continuous process for the preparation of 2-ethyl-2-(hydroxymethyl) hexanal and 2-butyl-2-theyl-1,3-propanediol
    Patent number: 5146004
    Abstract: Disclosed is a continuous process for the manufacture of 2-ethyl-2-(hydroxymethyl)hexanal wherein 2-ethylhexanal, formaldehyde and a tertiary amine are continuously fed to a reaction zone and crude product comprising an aqueous phase and an organic phase containing 2-ethyl-2-(hydroxymethyl)hexanal and 2-ethylhexanal is continuously removed from the reaction zone. Also disclosed are processes for (1) the azeotropic distillation of the organic phase of the crude product whereby unreacted 2-ethylhexanal is recovered and (2) the catalytic hydrogenation of the refined, organic phase of the crude product to produce 2-butyl-2-ethyl-1,3-propanediol.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: September 8, 1992
    Assignee: Eastman Kodak Company
    Inventors: Don L. Morris, William A. Beavers, William E. Choate
  • Process for the preparation of .alpha.-iodocarbonyl compounds
    Patent number: 5144070
    Abstract: Disclosed is a process for the preparation of .alpha.-iodocarbonyl compounds such as .alpha.-iodocarboxylic acid anhydrides and .alpha.-iodoketones by the reaction of a carboxylic anhydride with molecular iodine. Hydrolysis of the .alpha.-iodocarboxylic acid anhydrides gives the corresponding .alpha.-iodocarboxylic acids.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: September 1, 1992
    Assignee: Eastman Kodak Company
    Inventors: Joseph R. Zoeller, Michael R. Cushman, Regina M. Moncier
  • Process for the coproduction of alkyl iodides and alpha-iodocarboxylic acids and/or anhydrides thereof
    Patent number: 5144067
    Abstract: Disclosed is a process for the coproduction of (1) an alkyl iodide and (2) an .alpha.-iodocarboxylic acid, a mono-.alpha.-iodocarboxylic anhydride or a mixture thereof which comprises contacting a mixture of an iodine compound and a carboxylic anhydride with a peroxide at an elevated temperature.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: September 1, 1992
    Assignee: Eastman Kodak Company
    Inventors: Joseph R. Zoeller, Michael R. Cushman, Regina M. Moncier, Brent A. Tennant
  • Recovery of high-boiling aldehydes from rhodium-catalyzed hydroformylation processes
    Patent number: 5138101
    Abstract: Disclosed is an extraction process for the recovery of high-boiling aldehydes produced by the rhodium-catalyzed hydroformylation of olefins in the presence of a hydroformylation solvent. The extraction process involves intimately contacting a hydroformylation product solution comprising (i) a high-boiling aldehyde, (ii) hydroformylation catalyst components comprising rhodium and an organophosphine compound, and (iii) a hydroformylation solvent with an extraction solution comprising a primary alkanol and water to form a 2-phase mixture. The phases are separated to obtain a hydroformylation solvent phase containing catalyst components and an alkanol/water phase containing the high-boiling aldehyde.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: August 11, 1992
    Assignee: Eastman Kodak Company
    Inventor: Thomas J. Devon
  • Selective epoxidation of diolefins and aryl olefins
    Patent number: 5138077
    Abstract: Disclosed is a process for the selective epoxidation of olefins, including diolefins, having more than 2 carbon atoms by the catalytic oxidation of such an olefin in the presence of a supported, thallium-promoted, silver catalyst.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: August 11, 1992
    Assignee: Eastman Kodak Company
    Inventors: John R. Monnier, Peter J. Muehlbauer
  • Polyester compositions
    Patent number: 5132391
    Abstract: Disclosed are polyester adhesive compositions which exhibit increased melt viscosity and improved adhesion comprised of residues of terephthalic acid, ethylene glycol and diethylene glycol and having reacted therewith or copolymerized therein the residue of a phosphite ester compound and optionally containing a phenolic antioxidant. Also disclosed are articles coated with the polyester compositions and bonded laminate articles based on the compositions.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: July 21, 1992
    Assignee: Eastman Kodak Company
    Inventors: Alan W. White, Barry G. Pearcy, Marc A. Strand, Joey C. Carico
  • Recovery of 3,4-epoxy-1-butene from 1,3-butadiene oxidation effluents
    Patent number: 5117012
    Abstract: Disclosed are processes for the manunfacture of 3,4-epoxy-1-butene (EpB) and, particularly, for the recovery of EpB from an epoxidation effluent comprising EpB, butadiene, oxygen and an inert gas obtained by the selective epoxidation of butadiene with an oxygen-containing gas in the presence of a catalyst and an inert gas. EpB is separated from the effluent by means of an absorption process using liquid butadiene as the absorbent material.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: May 26, 1992
    Assignee: Eastman Kodak Company
    Inventors: Jerome L. Stavinoha, Jr., John D. Tolleson
  • Process for the preparation of 1-amino-4-bromoanthraquinones
    Patent number: 5117014
    Abstract: Disclosed is a process for the preparation of 1-amino-4-bromoanthraquinones by the bromination of the corresponding 1-aminoanthraquinone wherein a 1-amino-anthraquinone is contacted with elemental bromine in the presence of a carboxylic acid solvent and added hydrobromic acid. The process is not as complicated as known processes and produces lower amounts of isomeric 1-amino-2-bromoanthraquinones.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: May 26, 1992
    Assignee: Eastman Kodak Company
    Inventor: Kim S. Chamberlin
  • Process for the selective hydrogenation .gamma., .delta.-epoxyalkenes to epoxyalkanes
    Patent number: 5117013
    Abstract: Disclosed is a novel process for the preparation of epoxyalkanes and epoxycycloalkanes which comprises hydrogenating .gamma.,.delta.-epoxyalkenes or .gamma.,.delta.-epoxycycloalkenes in the presence of a rhodium catalyst. The process is especially useful for the preparation of 1,2-epoxybutane from 3,4-epoxy-1-butene.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: May 26, 1992
    Assignee: Eastman Kodak Company
    Inventor: Stephen N. Falling
  • Process for the preparation of ketoximes
    Patent number: 5117060
    Abstract: Disclosed is an improved process for the preparation of ketoximes, especially ketoximes derived from branched chain ketones, wherein a ketone is reacted with a hydroxylamine salt in the presence of an alkanol, a heterogeneous base and up to about 5 weight percent, based on the weight of the ketone and alkanol, water.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: May 26, 1992
    Assignee: Eastman Kodak Company
    Inventor: Jonathan S. Witzeman
  • Tris-(2-alkyl-4-alkoxyphenyl) phosphites as processing stabilizers for polyolefins
    Patent number: 5112893
    Abstract: Disclosed are polyolefin compositions containing a phosphite compound having the formula ##STR1## wherein R.sup.1 is hydrogen, alkyl or aralkyl; R.sup.2 is hydrogen or alkyl; and R.sup.3 is alkyl or aryl.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: May 12, 1992
    Assignee: Eastman Kodak Company
    Inventor: Richard H. S. Wang