Patents Represented by Attorney George J. Darsa
  • Patent number: 4052335
    Abstract: A process for the liquid-phase hydrogenation of maleic anhydride to .gamma.-butyrolactone in the presence of a catalyst composed of cobalt oxide and palladium on a support of silica.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: October 4, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Georg Michalczyk, Karl-Heinz Gluzek
  • Patent number: 4042490
    Abstract: A process for converting mixtures of C.sub.6 to C.sub.30 n-paraffin and n-paraffin by-products to substantially pure n-paraffin which comprises catalytically hydrogenating the mixture at a temperature of from about 600.degree. to 750.degree. F. in the presence of a Group VIII metal on alumina catalyst where the catalyst contains from about 0.05 to 2.0 weight percent of an alkali metal oxide or alkaline earth metal oxide or thallous oxide. The catalyst can additionally contain a Group VIB or VIIB metal.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: August 16, 1977
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Walter C. Gates, Jr.
  • Patent number: 4038316
    Abstract: Novel acylhydroximyl halides are provided and prepared by contacting a nitroalkanone with a halogen acid in the presence of an organic acid or alcohol.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: July 26, 1977
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John M. Larkin
  • Patent number: 4035400
    Abstract: A method of preparing an omega-nitroalkanoic acid is provided by contacting an ammonium, Group IA or Group IIA metal salt of a nitrocycloalkanone with an acidic mineral acid salt in an aqueous medium.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: July 12, 1977
    Assignee: Texaco Inc.
    Inventors: Mahmoud S. Kablaoui, Richard F. Love
  • Patent number: 4028388
    Abstract: A method of preparing carboxylic acids is provided by heating an acylhydroximyl halide in an aqueous medium at elevated temperatures.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: June 7, 1977
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John M. Larkin
  • Patent number: 4025561
    Abstract: A process for converting mixtures of C.sub.6 to C.sub.30 n-paraffin and n-paraffin by-products to substantially pure n-paraffin which comprises catalytically hydrogenating the mixture at a temperature of from about 600.degree. to 750.degree. F. in the presence of a Group VIII metal on alumina catalyst where the catalyst contains from about 0.05 to 2.0 weight percent of an alkali metal oxide or alkaline earth metal oxide or thallous oxide. The catalyst can additionally contain a Group VIB or VIIB metal.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: May 24, 1977
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Walter C. Gates, Jr.
  • Patent number: 4025534
    Abstract: A continuous process for producing gamma-butyrolactone by hydrogenating maleic anhydride in two stages in the presence of a catalyst composed of cobalt oxide and palladium on a support of silica. The hydrogenation is performed at a hydrogen pressure of 100 to 125 atmospheres and at a temperature of 50.degree. to 100.degree. C. in the first stage and at 190.degree. to 220.degree. C. in the second stage.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: May 24, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Lothar Sandhack, Werner Webers, Georg Michalczyk, Karl-Heinz Gluzek
  • Patent number: 4013546
    Abstract: This invention relates to a process for catalytically cracking hydrocarbon feedstocks containing a contaminant deleterious to the process and catalyst and to a method for removing the contaminant from a crystalline aluminosilicate cracking catalyst used in the process, where the contaminant is vanadium, or vanadium and nickel, and optionally iron.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: March 22, 1977
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Peter L. Paull
  • Patent number: 4013697
    Abstract: A method of preparing carboxylic acids is provided by contacting an ammonium, Group IA or Group IIA metal salt of a nitroketone in an aqueous medium. The method is preferably undertaken in the presence of an acidic mineral acid salt.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: March 22, 1977
    Assignee: Texaco Inc.
    Inventors: Mahmoud S. Kablaoui, Richard F. Love
  • Patent number: 4013729
    Abstract: A process for producing secondary alcohols from n-paraffins wherein a portion of the n-paraffin is converted to a borate ester along with oxygenated by-products and the borate ester is separated and hydrolyzed to a secondary alcohol. The mixtures of C.sub.6 to C.sub.30 n-paraffin and n-paraffin by-products are converted to substantially pure n-paraffin by catalytically hydrogenating the mixture at a temperature of from about 600.degree. to 750.degree. F. in the presence of a Group VIII metal on alumina catalyst where the catalyst contains from about 0.05 to 2.0 weight percent of an alkali metal oxide or alkaline earth metal oxide or thallous oxide. The catalyst can additionally contain a Group VIB or VIIB metal.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: March 22, 1977
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Walter C. Gates, Jr.
  • Patent number: 4006165
    Abstract: A process for converting maleic anhydride to .gamma.-butyrolactone by treating the anhydride with hydrogen in the presence of co-catalysts comprising palladium and nickel-copper chromite at elevated pressures and temperatures.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: February 1, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Georg Michalczyk, Karl-Heinz Gluzek
  • Patent number: 4006104
    Abstract: A process for converting .gamma.-butyrolactone to tetrahydrofuran by treating the lactone with hydrogen in the presence of a cobalt-copper chromite catalyst at elevated pressures and temperatures.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: February 1, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Georg Michalczyk, Karl-Heinz Gluzek
  • Patent number: 4000194
    Abstract: Alkylamides are prepared by heating an acylhydroximyl halide in an oxygenated polar organic solvent at a temperature of about 70.degree. to 190.degree. C. The alkylamides herein prepared are useful as fuel and lubricant additives and as intermediates in the preparation of acids, nitriles and amines.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: December 28, 1976
    Assignee: Texaco Inc.
    Inventors: Roger D. Duranleau, John M. Larkin
  • Patent number: 4000171
    Abstract: A method of simultaneously preparing a carboxylic acid and a hydroxamic acid which comprises contacting an ammonium, Group IA or Group IIA salt of an alkyl alphanitroketone with an acidic mineral acid salt in a carboxylic acid solvent.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: December 28, 1976
    Assignee: Texaco Inc.
    Inventor: Mahmoud S. Kablaoui
  • Patent number: 3998861
    Abstract: A method of preparing omega-carboxyalkanohydroxamic acids is provided by contacting an ammonium, Group IA or Group IIA metal salt of a nitrocycloalkanone with an acidic mineral acid salt in a carboxylic acid solvent.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: December 21, 1976
    Assignee: Texaco Inc.
    Inventor: Mahmoud S. Kablaoui
  • Patent number: 3994928
    Abstract: A process for the liquid-phase hydrogenation of maleic anhydride to .gamma.-butyrolactone in the presence of a catalyst composed of cobalt oxide and palladium on a support of silica.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: November 30, 1976
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Georg Michalczyk, Karl-Heinz Gluzek
  • Patent number: 3993554
    Abstract: A process for converting mixtures of C.sub.6 to C.sub.30 n-paraffin and n-paraffin by-products to substantially pure n-paraffin which comprises catalytically hydrogenating the mixture at a temperature of from about 600.degree. to 750.degree. F. in the presence of a Group VIII metal on alumina catalyst where the catalyst contains from about 0.05 to 2.0 weight percent of an alkali metal oxide or alkaline earth metal oxide or thallous oxide. The catalyst can additionally contain a Group VIB or VIIB metal. The n-paraffin is photochemically reacted with a gaseous nitrosating agent to form paraffin oximes and by-products and the by-products are recycled for catalytic hydrogenation.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: November 23, 1976
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Walter C. Gates, Jr.
  • Patent number: 3986947
    Abstract: A process for increasing the octane number of a paraffinic gasoline blending component comprises a reforming operation in which the component is contacted with hydrogen in the presence of a novel catalyst prepared by depositing a noble metal on silica gel and then dispersing said silica gel in an alumina gel matrix.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: October 19, 1976
    Assignee: Texaco Inc.
    Inventors: Raymond F. Wilson, Li C. Mih, John T. Brandenburg, Reese A. Peck
  • Patent number: 3985639
    Abstract: This invention relates to a process for catalytically cracking hydrocarbon feedstocks containing a contaminant deleterious to the process and catalyst and to a method for removing the contaminant from a crystalline aluminosilicate cracking catalyst used in the process, where the contaminant is vanadium, or vanadium and nickel, and optionally iron.
    Type: Grant
    Filed: July 19, 1974
    Date of Patent: October 12, 1976
    Assignee: Texaco Inc.
    Inventors: Robert M. Suggitt, Peter L. Paull
  • Patent number: 3976697
    Abstract: Reductive amination of C.sub.10 -C.sub.26 dialkyl internal ketones, with secondary amines, using a supported nickel catalyst, results in the production of tertiary amines in excellent yield.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: August 24, 1976
    Assignee: Texaco Inc.
    Inventors: Lawrence F. Kuntschik, Orville W. Rigdon