Patents Represented by Attorney Jack H. Park

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  • Bisulfite addition products of ketone-terminated polyoxyalkylene compounds
    Patent number: 5138095
    Abstract: Bisulfite addition products, which exhibit surface active properties, prepared by reacting a ketone-terminated polyoxyalkylene compound, such as a diketone of a polyoxypropylene glycol, a monoketone of a polyoxyalkylene alcohol, etc. with an ammonium or alkali metal bisulfite are disclosed.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: August 11, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, John R. Sanderson
  • Catalytic synthesis of alkyl morpholinones
    Patent number: 5136035
    Abstract: 4-Alkyl-2-morpholinones are prepared by bringing an N-alkyldiethanolamine into contact with a zinc oxide promoted copper catalyst in the presence of hydrogen under reaction conditions including a temperature within the range of about 240.degree. to about 400.degree. C. and a pressure within the range of about 0 to about 300 psig and by recovering the 4-alkyl-2-morpholinone that is formed by the reaction.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: August 4, 1992
    Assignee: Texaco Chemical Company
    Inventor: Wei-Yang Su
  • Method for isolating kerogen from a mineral sample in a pressurized reaction cell
    Patent number: 5135871
    Abstract: A method for isolating kerogen from a mineral sample in a pressurized reaction cell, which permits reaction at pressures greater than two atmospheres and provides for the removal of all liquids from the cell without significant loss of sample solids, employing multiple steps of addition and removal of concentrated hydrochloric acid, concentrated hydrofluoric acid, concentrated ammonium hydroxide, and deionized water.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: August 4, 1992
    Assignee: Texaco Inc.
    Inventors: Edwin L. Colling, Jr., David G. Nolte
  • Mold release agent and method for molding ceramics
    Patent number: 5133804
    Abstract: A mold release composition has been discovered. The composition comprises 20% high erucic acid rapeseed oil and 4% tall oil fatty acids in kerosene. The composition demonstrated no objectional smoke generation during calcining of molded ceramic articles. The composition demonstrated adequate mold release and surface finish.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: July 28, 1992
    Assignee: Texaco Inc.
    Inventor: Douglas H. Culpon, Jr.
  • Oxidation of primary alcohols to aldehydes using transition metal phthalocyanines as catalysts
    Patent number: 5132465
    Abstract: Primary alcohols may be oxidized to the corresponding aldehydes using non-toxic oxidizing agents such as tert-butyl hydroperoxide (TBHP) in the presence of a transition metal phthalocyanine catalyst. Representative catalysts include ferrous phthalocyanine and chloroferric phthalocyanine. Under some conditions, 1,1-dialkoxyalkanes may be co-produced with the aldehydes. 1,1-Dialkoxyalkanes are protected aldehydes and find utility in solvents.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: July 21, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis
  • Continuous preparation of secondary amines from nitriles using a nickel catalyst
    Patent number: 5130491
    Abstract: A method for producing secondary amines, particularly fatty secondary amines such as ditallowamine from fatty nitriles, such as tallow nitrile over a nickel catalyst promoted with copper, chromium and molybdenum has been discovered. The reaction gives high selectivity of secondary amine over the coproduced primary and tertiary amines. The reaction may be conducted continuously in the presence of ammonia and hydrogen. The secondary amine proportion may be increased by a second stage using the same catalyst as the first stage, but in the absence of ammonia. The same catalyst may be used in both steps if a two stage process is used.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: July 14, 1992
    Assignee: Texaco Chemical Company
    Inventor: Robert L. Zimmerman
  • Hydroxy terminated polyoxypropylene polyamides
    Patent number: 5130382
    Abstract: Hydroxy terminated polyamides are prepared having the formula: ##STR1## wherein R represents a defined hydrocarbon group,R' and R" represents defined oxypropylene groups, and R'" represents a defined oxyethylene group,the hydroxy terminated polyamide having been prepared by first preparing an intermediate dicarboxylic acid terminated polyoxypropylene polyamide by reacting an excess of a dicarboxylic acid component with a diamine mixture composed of a higher molecular weight polyoxypropylene diamine and a lower molecular weight polyoxypropylene diamine, and by reacting the intermediate polyamide with a molar excess of an oxyethylene amino alcohol.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: July 14, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Wei-Yang Su
  • Precipitation of molybdenum
    Patent number: 5128492
    Abstract: An epoxidation reaction product formed by the molybdenum catalyzed reaction of propylene with tertiary butyl hydroperoxide to provide propylene oxide and tertiary butyl alcohol is separated by distillation into a propylene fraction, a propylene oxide fraction, a tertiary butyl alcohol fraction and a heavy liquid distillation fraction composed primarily of tertiary butyl hydroperoxide, tertiary butyl alcohol, dissolved molybdenum catalyst, and impurities including lower aliphatic C.sub.1 -C.sub.4 carboxylic acids, and the heavy liquid distillation fraction is saturated with hydrogen to precipitate the molybdenum therefrom for recovery.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: July 7, 1992
    Assignee: Texaco Chemical Company
    Inventors: William A. Smith, Robert A. Meyer, Edward T. Marquis
  • Purification of propylene oxide by liquid extraction
    Patent number: 5127997
    Abstract: Purified propylene oxide is recovered from an impure propylene oxide feedstock contaminated with more than 50 ppm of six carbon atom hydrocarbon impurities by a solvent extraction process wherein:an impure propylene oxide feedstock is charged to a liquid/liquid extraction zone and contacted therein with an extractant consisting essentially of water and a paraffinic hydrocarbon containing 8 to 10 carbon atoms, and resolved therein into a raffinate consisting essentially of an aqueous solution of propylene oxide and into an extract comprising the paraffinic hydrocarbon and the 6 carbon atom impurities initially present in the propylene oxide feedstock.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: July 7, 1992
    Assignee: Texaco Chemical Company
    Inventors: William A. Smith, Robert A. Meyer, Eileen T. Nguyen
  • Block polyamido condensation products
    Patent number: 5128441
    Abstract: A block polyamido primary amine condensation product prepared by reacting a defined polyoxyalkylene polyamine having terminal primary amine groups with an amount of a defined dicarboxylic acid or an anhydride or a C.sub.1 to C.sub.4 alkyl ester thereof, sufficient to react one mole of the dicarboxylic acid reactant with each primary amine group of the polyoxyalkylene polyamine to thereby prepare an intermediate condensation reaction product containing terminal carboxyl groups, and reacting one mole of a defined organic di-primary amine with each terminal carboxyl group of the said intermediate condensation reaction product to thereby provide, as the principal product of the reaction a block polyamido primary amine condensation product.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: July 7, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Jiang-Jen Lin
  • Optical thermal sensing device in fired oil treaters
    Patent number: 5129025
    Abstract: An optical fiber thermal sensor is mounted in an operative position by a member fixed to the unit to be monitored. The member has an axial bore and means to position the optical fiber therein. The member is also profiled so as to not affect measurement by causing heat build-up or drain from around the optical fiber.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: July 7, 1992
    Assignee: Texaco Inc.
    Inventors: Jordan Loftus, George M. Welch, Jr.
  • Reaction of hypochlorites with polyoxypropylene glycols
    Patent number: 5120879
    Abstract: Polyoxypropylene diketones are prepared by initially adding predetermined amounts of a mono- or dicarboxylic acid having a pK<4.5 and a water solubility at 25.degree. C. of >1%, a polyoxypropylene glycol and, optionally, water, to a reaction zone and thereafter adding an aqueous solution of an alkali metal or an alkaline earth metal hypochlorite oxidant to the reaction zone with agitation under reaction conditions including a temperature of about 10.degree. to about 50.degree. C., a pressure of about 0 to 1,000 psig. and a total reaction time of about 0.5 to 20 hours, whereby said polyoxypropylene glycol will be substantially selectively converted to the said corresponding diketone, and recovering said diketone.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Edward T. Marquis
  • Process for oligomerizing olefins using a super-dealuminated Y-zeolite
    Patent number: 5120891
    Abstract: An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using a catalyst comprising a super-dealuminated Y-zeolite.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Pei S. E. Dai, John F. Knifton
  • Epoxy resin compositions
    Patent number: 5120817
    Abstract: An epoxy resin composition comprises an vicinal polyepoxide and a Mannich condensation reaction product curing agent. The curing agent is the Mannich condensation reaction product of a phenol, formaldehyde and a polyoxyethylenediamine of the formula:NH.sub.2 (CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 CH.sub.2 NH.sub.2,and wherein: x ranges from 1 to 3. These epoxy resin compositions are useful in coatings, adhesives, encapsulations and composite matrices.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Harold G. Waddill, Jiang-Jen Lin
  • Recovering hydrocarbons with a mixture of carbon dioxide and trichloroethane
    Patent number: 5117907
    Abstract: The invention is a method of recovering petroleum hydrocarbons from an underground formation penetrated by at least one injection well and at least one production well, which comprises injecting through an injection well a mixture of carbon dioxide and about 0.1% to about 20% by weight trichloroethane at a temperature and pressure above the bubble point of the mixture, and recovering hydrocarbons and other fluids at a production well.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: June 2, 1992
    Inventor: Jack J. C. Hsu
  • Preparation of polyether amide from tetraethylene glycol diamine and terephthalic acid
    Patent number: 5118785
    Abstract: Polyether amides may be produced by reacting aromatic dicarboxylic acids with tetraethylene glycol diamine. This is surprising since aromatic dicarboxylic acids, such as terephthalic acid cannot be readily reacted with triethylene glycol diamine. Suitable dicarboxylic acids include terephthalic acid, isophthalic acid, t-butyl isophthalic acid, and mixtures thereof. Tetraethylene glycol diamine is also known as JEFFAMINE.RTM. EDR-192 Amine. The resulting polyether amides are useful to make polymers, including fibers, with unusually good water absorbancy properties.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: June 2, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Wei-Yang Su
  • Anti-icing compositions containing thickener blend having polyacrylic acid and copolymer of acrylic acid and hydrophobic vinyl monomer
    Patent number: 5118435
    Abstract: Anti-icing compositions, such as used on aircraft wing surfaces, may be thickened using a blend of a polyacrylic acid and a copolymer of polyacrylic acid with a vinyl monomer, where the copolymer acts as a thickener modifier. The two polymers form a thickener blend. The polyacrylic acid may have a weight average molecular weight of from about 2,500,000 to about 3,500,000 and be slightly crosslinked with a diene monomer. The composition also contain an alkylene glycol component, such as propylene glycol, diethylene glycol and mixtures thereof. These compositions retain a high viscosity,even when diluted with water, and exhibit a highly pseudo plastic rheology indicating desirable flow off characteristics. A neutralizing agent to neutralize at least partially the carboxylic acid groups of the thickening blend is also preferably included.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: June 2, 1992
    Assignee: Texaco Chemical Company
    Inventor: Edward C. Nieh
  • Spray polyurea elastomers using chopped glass roving
    Patent number: 5118728
    Abstract: A spray polyurea elastomer is made in combination with a filler material by spraying together two reactive elastomers and dispensing filler material into the spray pattern.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: June 2, 1992
    Assignee: Texaco Chemical Company
    Inventor: Dudley J. Primeaux
  • Propylene oxide purification by extractive distillation
    Patent number: 5116466
    Abstract: An extractive distillation agent consisting essentially of 1-methyl-2-pyrrolidone is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide contaminated with reduced quantities of acetone and methanol, and a heavier bottoms distillation fraction containing substantially all of the 1-methyl-2-pyrrolidone, water and acetone and some of the methanol introduced into the distillation column.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 26, 1992
    Assignee: Texaco Chemical Company
    Inventors: Edward T. Marquis, George P. Speranza, Yu-Hwa E. Sheu, William K. Culbreth, III, David G. Pottratz
  • Water and acetone removal from propylene oxide by extractive distillation
    Patent number: 5116467
    Abstract: An extractive distillation agent consisting essentially of sulfolane is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide, and a heavier bottoms distillation fraction containing substantially all of the sulfolane and water introduced into the distillation column.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 26, 1992
    Assignee: Texaco Chemical Company
    Inventors: Edward T. Marquis, George P. Speranza, Yu-Hwa E. Sheu, William K. Culbreth, III, David G. Pottratz