Patents by Inventor Roger G. Duranleau

Roger G. Duranleau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5414141
    Abstract: A method for preparing tertiary butyl alcohol wherein a solution of a tertiary butyl hydroperoxide feedstock in tertiary butyl alcohol is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consisting essentially of palladium and gold supported on alumina, and is brought into contact with the catalyst in liquid phase under hydroperoxide decomposition reaction conditions to convert the tertiary butyl hydroperoxide to decomposition products, principally tertiary butyl alcohol and ditertiary butyl peroxide.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: May 9, 1995
    Assignee: Texaco Chemical Inc.
    Inventors: John R. Sanderson, John F. Knifton, Roger G. Duranleau
  • Patent number: 5364988
    Abstract: A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consisting essentially of alumina having chromium deposited thereon and is brought into contact with the catalyst in liquid phase under hydroperoxide decomposition reaction conditions to convert the tertiary butyl hydroperoxide to decomposition products, principally tertiary butyl alcohol.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 15, 1994
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Roger G. Duranleau
  • Patent number: 5359130
    Abstract: A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consisting essentially of alumina having palladium and platinum deposited thereon and is brought into contact with the catalyst in liquid phase under hydroperoxide decomposition reaction conditions to convert the tertiary butyl hydroperoxide to decomposition products, principally tertiary butyl alcohol.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: October 25, 1994
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Roger G. Duranleau, John F. Knifton
  • Patent number: 5354917
    Abstract: A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consisting essentially of alumina or carbon having rhodium deposited thereon and is brought into contact with the catalyst in liquid phase under hydroperoxide decomposition reaction conditions to convert the tertiary butyl hydroperoxide to decomposition products, principally tertiary butyl alcohol.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: October 11, 1994
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Roger G. Duranleau, John F. Knifton
  • Patent number: 5354925
    Abstract: A method for preparing tertiary butyl alcohol wherein a feedstock comprising a solvent solution of tertiary butyl hydroperoxide in tertiary butyl alcohol or a mixture of tertiary butyl alcohol with isobutane is charged to a hydroperoxide decomposition reaction zone containing a catalytically effective amount of a hydroperoxide decomposition catalyst consisting essentially of lead oxide supported on alumina and is brought into contact with the catalyst in liquid phase with agitation under hydroperoxide decomposition reaction conditions to convert the tertiary butyl hydroperoxide to decomposition products, principally tertiary butyl alcohol.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: October 11, 1994
    Assignee: Texaco Chemical Company
    Inventors: John R. Sanderson, Roger G. Duranleau
  • Patent number: 5189221
    Abstract: A mixture of C.sub.1 -C.sub.4 mono-, di- and trialkylamines is separated by adding at least about an equimolar amount, based on the amine mixture, of a formyldialkanolamine selected from the group consisting of formyldiethanolamine, formyl aminoethylethanolamine and formyl 2-(2-aminoethylamino)-ethanol to the alkyl amine mixture, at a temperature of about 120.degree. to about 160.degree. C. and a pressure of about 500 to about 3,000 psig to provide a reaction mixture comprising the trialkylamine, the formyl dialkylamine and the formyl monoalkylamine, together with unreacted formyldialkanolamine and the corresponding alkanolamine, by separately recovering the trialkyl amine, the formyl dialkylamine and the formyl monoalkylamine from the reaction mixture, by reacting the dialkyl amine with said alkanolamine at atmospheric pressure at temperature of about 120.degree. to about 140.degree. C.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: February 23, 1993
    Assignee: Texaco Chemical Company
    Inventors: Roger G. Duranleau, Robert L. Zimmerman
  • Patent number: 5182025
    Abstract: Disclosed is a method for removing potassium from polyol and alkoxylated alkyl phenol products and neutralizing soluble base catalysts which comprises using a partially spent ion exchange resin which no longer meets the purity requirements for the production of MTBE, ETBE or TAME, washing the catalyst, mixing it with the polyol or alkoxylated alkylphenol in an acid/base ratio of about 7/1 to 10/1, for a period of hours and removing the filtrate.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: January 26, 1993
    Assignee: Texaco Chemical Company
    Inventors: Roger G. Duranleau, Martin J. Plishka, Michael Cuscurida
  • Patent number: 4691041
    Abstract: A process is disclosed for the preparation of ethylene glycol and dimethyl carbonate by reacting methanol and ethylene carbonate in the presence of a series of heterogenous catalyst systems including ion exchange resins with tertiary amine, quaternary ammonium, sulfonic acid and carboxylic acid functional groups, alkali and alkaline earth silicates impregnated into silica and ammonium exchanged zeolites.
    Type: Grant
    Filed: January 3, 1986
    Date of Patent: September 1, 1987
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, Edward C. Y. Nieh, John F. Knifton
  • Patent number: 4629809
    Abstract: A process for producing acetic acid is disclosed which comprises reacting methanol with carbon monoxide at an elevated temperature and pressure in the presence of an iodine-free catalyst system wherein the catalyst consists of ruthenium compound, quaternary phosphonium salt, cobalt-compound and inorganic acid or an organic acid, reacted in combination in a liquid form or a ruthenium on inert solid support catalyst with a sulfur-containing acid promoter.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: December 16, 1986
    Assignee: Texaco Inc.
    Inventors: Steven H. Vanderpool, Jiang-Jen Lin, Roger G. Duranleau
  • Patent number: 4615771
    Abstract: A method for the separation of bis-(2-aminoethyl)ether from N-(2-methoxyethyl)morpholine via azeotropic distillation using an entrainer such as monoethanolamine is described. The N-(2-methoxyethyl)morpholine is selectively removed by the monoethanolamine. The N-(2-methoxyethyl)morpholine is then separated from the monoethanolamine by liquid-liquid extraction using a non polar hydrocarbon or aromatic extraction solvent and distillation.The N-(2-methoxyethyl)morpholine-monoethanolamine stream previously had no economic use. The separation is now economically effected and the N-(2-methoxyethyl)morpholine used as a polyurethane catalyst.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: October 7, 1986
    Assignee: Texaco Inc.
    Inventors: Robert L. Zimmerman, Roger G. Duranleau
  • Patent number: 4602085
    Abstract: It has been discovered in accordance with the present invention that oxyalkylated derivatives of alkyl glucosides can be effectively reductively aminated by bringing the oxyalkylated alkyl glucoside feedstock into contact with a reductive amination catalyst in the presence of ammonia and hydrogen to provide derivatives containing both hydroxyl groups and amine groups. These derivatives are useful, for example, as gas scrubbing agents, raw materials for the preparation of corrosion inhibitors, epoxy curing agents, raw materials for the preparation of surfactants and as polyols for use in the preparation of polyurethanes.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: July 22, 1986
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, Michael E. Brennan
  • Patent number: 4584119
    Abstract: A corrosion inhibited antifreeze composition incorporating a corrosion inhibitor is described. The dibasic salt of naphthalene dicarboxylic acid and optionally a triazole comprise the corrosion inhibitor.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: April 22, 1986
    Assignee: Texaco, Inc.
    Inventors: Roger G. Duranleau, Carol A. Triebel, Clifford L. Lambert
  • Patent number: 4565866
    Abstract: The instant invention relates to a process for the preparation of formamides in which ammonia, a primary or a secondary amine is reacted with carbon monoxide at an elevated temperature and pressure in the presence of a mixture consisting of a phenol and a phenate salt from the group consisting of an alkali metal phenate and an alkaline earth metal phenate, said phenol and said phenate salt each having the radical: ##STR1## wherein R is selected from the group consisting of an alkyl radical having from 3 to 18 carbon atoms and a hydroxyaryl radical of the formula: ##STR2## in which R' is an alkylene group having from 2 to 5 carbon atoms and in which x has a value of 1 to 2 when R is said alkyl radical and x has a value of 1 when R is said hydroxyaryl radical.
    Type: Grant
    Filed: January 24, 1984
    Date of Patent: January 21, 1986
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John F. Knifton, George P. Speranza
  • Patent number: 4565896
    Abstract: This invention relates to the manufacture of ethylene glcyol and more particularly to a low pressure process for making ethylene glycol comprising reacting synthesis gas, i.e. a mixture of carbon monoxide and hydrogen, plus formaldehyde in the presence of a homogeneous liquid catalyst containing an effective amount of cobalt-containing compound and a silicon or germanium-containing promoter and a solvent at a temperature of at least 50.degree. C. and a pressure of at least 500 psi wherein said ethylene glycol product separates as a separate liquid phase from the solvent.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: January 21, 1986
    Assignee: Texaco Inc.
    Inventors: John F. Knifton, Roger G. Duranleau
  • Patent number: 4529822
    Abstract: This invention relates to preparing formamide compounds in a process which comprises reacting an amine with a formylalkanolamine in the presence of carbon monoxide in which the mole ratio of amine to formylalkanolamine ranges from 0.2:1 to 5:1. The reaction is conducted at a temperature ranging from about 50.degree. to 300.degree. C. and a pressure ranging from about 100 to 10,000 psig. The amine employed in the reaction has the formula: ##STR1## wherein R' is hydrogen, an alkyl group of 1 to 10 carbon atoms, cyclohexyl, or --R"--O--R'", wherein R" is a divalent alkylene group of 2 to 4 carbon atoms and R'" is an alkyl group of 1 to 3 carbon atoms; and R is hydrogen or an alkyl group of 1 to 10 carbon atoms. The formylalkanolamine employed in the reaction has the formula: ##STR2## wherein R is an alkylene group of 1 to 3 carbon atoms, z is 0 or 1 and y is 1 or 2 and the sum of y and z is 2.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: July 16, 1985
    Assignee: Texaco, Inc.
    Inventors: Roger G. Duranleau, Clifford L. Lambert, Jr.
  • Patent number: 4519956
    Abstract: A process for producing acetic anhydride is disclosed which comprises reacting methyl acetate with carbon monoxide at an elevated temperature and pressure in the presence of an iodine-free catalyst system wherein the catalyst consists of ruthenium compound, quaternary phosphonium salt and cobalt-compound. A further embodiment comprises recycling product acetic anhydride with methanol to produce acetic acid.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: May 28, 1985
    Assignee: Texaco Inc.
    Inventors: Jiang-Jen Lin, Roger G. Duranleau
  • Patent number: 4510326
    Abstract: A process for the preparation of a formylalkanolamine which comprises reacting carbon monoxide with an alkanolamine at a temperature ranging from about 60.degree. to 300.degree. C. and at a pressure ranging from about 100 to 10,000 psig, said alkanolamine being represented by the formula:RNH.sub.x --CH.sub.2 --(X).sub.z --CH.sub.2 --OH).sub.yin which x is 0 or 1, R is hydrogen, a methyl or an aminoethyl radical with the proviso that R is hydrogen when x is 0, y is 1 or 2 and the sum of x and y is 2, X is a divalent radical from the group consisting of --CH.sub.2 -- and --CHOH--, and z is 0 or 1.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: April 9, 1985
    Assignee: Texaco Inc.
    Inventors: Clifford L. Lambert, Jr., Roger G. Duranleau
  • Patent number: 4463192
    Abstract: A process for the preparation of N-hydrocarbyl substituted alkanolamines which comprises reacting a specified oxazolidine with carbon monoxide at a temperature ranging from 50.degree. to 250.degree. C. and a pressure ranging from 100 to 2500 psig, said oxazolidine being represented by the formula: ##STR1## in which R is an alkyl radical of 1 to 3 carbon atoms and R' is an alkyl radical of 1 to 10 carbon atoms or a hydroxy alkyl radical of 1 to 10 carbon atoms.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: July 31, 1984
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, Kenneth G. McDaniel
  • Patent number: 4421863
    Abstract: Low molecular weight oxygenated compounds, and particularly ethylene glycol and methanol, are prepared from syngas in improved yields by contacting a mixture of carbon monoxide and hydrogen with a catalyst system comprising a rhodium-containing compound, an organic ligand and a special cationic polynuclear aromatic compound possessing a nitrogen atom at a ring fusion position, dissolved in a suitable solvent, and heating the resulting reaction mixture at a temperature of at least 150.degree. C. and a pressure of at least 500 psi for sufficient time to produce the desired low molecular weight oxygenated compounds, and then recovering the same from the reaction mixture.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: December 20, 1983
    Assignee: Texaco Inc.
    Inventor: Roger G. Duranleau
  • Patent number: 4402868
    Abstract: Methane-rich gas is produced by reacting gas mixtures comprising CO and at least one member selected from the group consisting of H.sub.2 and H.sub.2 O, such as synthesis gas, in a reactor containing an improved unsupported catalyst comprising an alkali-metal promoted partially reduced mixture of at least one nickel uranate and at least one oxide of nickel. The weight percent uranium present in the activated catalyst, based on total weight of catalyst composition, is in the range of over 50 to about 90.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: September 6, 1983
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, Walter C. Gates, Jr.