Patents Represented by Attorney Vincent A. Mallare
  • Patent number: 5389592
    Abstract: A method of enhancing the activity of a regenerated catalyst for the hydroprocessing of hydrocarbons comprising:(a) applying a modifying element dissolved in a solvent onto the surface of a regenerated catalyst;(b) drying said modified regenerated catalyst to remove all free solvent from said catalyst;(c) optionally, heating said dried modified regenerated catalyst at temperature of about 120.degree. C. to about 1000.degree. C. at a rate of 1.degree.-20.degree. C. per minute, and holding said dried catalyst at a temperature of about 120.degree. C. to about 1000.degree. C. up to 48 hours to provide an enhanced regenerated catalyst; and(d) recovering said enhanced regenerated catalyst.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: February 14, 1995
    Assignee: Texaco Inc.
    Inventors: Jeffrey G. Weissman, Elaine C. Decanio, Max R. Cesar
  • Patent number: 5389241
    Abstract: A method of selectively hydrodenitrogenating various raw hydrocarbon oils such as various petroleum feedstocks, coal liquids, shale oils and sand oils, which method comprises passing the raw hydrocarbon oil along with hydrogen (H.sub.2) over sulfided carbon supported Fe--Mo catalysts, whereby the raw hydrocarbon oil is hydrodenitrogenated with a selectivity significantly higher than that is possible with conventional alumina supported hydrotreating catalysts.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: February 14, 1995
    Assignee: Texaco Inc.
    Inventors: Chakka Sudhakar, Gerald G. Sandford, Frank Dolfinger, Jr.
  • Patent number: 5292351
    Abstract: A composition of matter comprising:a) an aloyl urea represented by the formula ##STR1## where R.sub.1 is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl, or aryl hydrocarbon; andb) an aroyl urea represented by the formula ##STR2## where R.sub.1 is a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; and Z is a heteroatom selected from the group consisting of Group IVa, Group Va and Group VIa materials of the periodic table.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney Lu-Dai Sung, Benjamin J. Kaufman
  • Patent number: 5286267
    Abstract: The present invention provides a novel class of compounds, useful as gasoline detergent additives, which is a polyether hydroxyethylaminoethyl oxalamide represented by the formula ##STR1## where R is a (C.sub.5 -C.sub.25) alkyl group and n is an integer between about 5 and about 20.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: February 15, 1994
    Assignee: Texaco Inc.
    Inventors: Wei-Yang Su, Sheldon Herbstman, Robert L. Zimmerman, Michael Cuscurida
  • Patent number: 5275746
    Abstract: Multifunctional viscosity index improvers for lubricating oils containing an EPM or EPDM polymer onto which has been grafted with an unsaturated reactive monomer and thereafter reacted with amino alkylphenothiazine.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: January 4, 1994
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Benjamin J. Kaufman, Theodore E. Nalesnik, Robert T. Biggs
  • Patent number: 5275994
    Abstract: A process of preparing a catalyst for removal of sulfur and nitrogen in hydro-processing of hydrocarbon streams. The catalyst composition is formed by depositing molybdenum or tungsten. A second metal is deposited on the support layer in a non-aqueous fashion. The second metal being vandium, niobium or tantalum in organic solvent soluble metal alkoxide form. A third metal of nickel or cobalt is deposited and calcined on the support layer.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: January 4, 1994
    Assignee: Texaco Inc.
    Inventors: Jeffrey G. Weissman, Gerald G. Sandford, Max R. Cesar
  • Patent number: 5264140
    Abstract: A lubricating oil composition comprising:(a) a major amount of a base oil having a lubricant viscosity; and(b) a minor amount of, as an antioxidant/dispersant VI improver additive, a lubricant additive.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: November 23, 1993
    Assignee: Texaco Inc.
    Inventors: Munmaya K. Mishra, Isaac D. Rubin
  • Patent number: 5264139
    Abstract: A lubricating oil composition comprising(a) a major amount of a base oil having a lubricant viscosity, and(b) a minor amount of, as an antioxidant/dispersant antiwear VI improver additive, a lubricant additive.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: November 23, 1993
    Assignee: Texaco Inc.
    Inventors: Munmaya K. Mishra, Isaac D. Rubin
  • Patent number: 5236046
    Abstract: A variant strain of Agrobacter radiobacter has been found to produce a unique heteropolysaccharide containing D-galactose, D-glucose and pyruvic acid in approximate molar ratios of 2:15:2 in a seventeen member repeat unit having the structure shown below, wherein Glc represents D-glucose, Gal represents D-galactose and Pyr represents pyruvic acid, with the numerals indicating the positions of linkage in these ring structures. The heteropolysaccharide is useful in mobility control in oil reservoir formations, especially when crosslinked with trivalent metal cations (Cr.sup.3+, Al.sup.3+, Fe.sup.3+ or Ti.sup.3+) to form a gel which preferentially fills high permeability zones in such reservoirs.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: August 17, 1993
    Assignee: Texaco Inc.
    Inventors: Peter D. Robison, Arthur J. Stipanovic, Charles E. Stypulkoski, Nick C. Wan, Susan Easter
  • Patent number: 5226925
    Abstract: A composition of matter comprising a mixture of:a) p-nonyl-co-p-phenylcalix[8]arene monoallophanate;b) p-nonyl-co-p-phenylcalix[8]arene diallophanate;c) p-nonyl-co-p-phenylcalix[8]arene triallophanate;d) p-nonyl-co-p-phenylcalix[8]arene tetraallophanate;e) p-nonyl-co-p-phenylcalix[8]arene pentallophanate;f) p-nonyl-co-p-phenylcalix[8]arene hexaallophanate;g) p-nonyl-co-p-phenylcalix[8]arene heptaallophanate; andh) p-nonyl-co-p-phenylcalix[8]arene octaallophanate.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: July 13, 1993
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5227083
    Abstract: A lubricating oil additive with rust and haze inhibiting properties which comprises the reaction product of an alkyl sarcosine represented by the figure ##STR1## where R is a (C.sub.3 -C.sub.30) alkyl radical and poly (propylene oxide). A lubricating oil composition containing the additive is also provided.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: July 13, 1993
    Assignee: Texaco Inc.
    Inventors: Joseph M. Russo, Thomas F. DeRosa, Rodney L. Sung, Benjamin J. Kaufman
  • Patent number: 5227569
    Abstract: Normal olefins such as n-butenes can be converted to iso olefins such as isobutylene by skeletal isomerization over catalysts of boron-beta zeolites having pore sizes of at least about 5 Angstroms and containing boron in the framework structure thereof. The boron-beta zeoliteS have sufficient acidity to catalyze the skeletal isomerization of normal olefinsto iso-olefins. The catalysts can be used to produce iso-olefins for reaction with alcohols in integrated processes to produce alkyl tertiary alkyl ethers such as MTBE.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: July 13, 1993
    Assignee: Texaco Inc.
    Inventors: Chi-Lin O'Young, John Hazen, Daniel G. Casey
  • Patent number: 5219955
    Abstract: A composition of matter comprising a mixture of:a) 1-(poly[1-hydroxyl-(2,6-phenylene methylene)])-3,5-dihydroxy-s-triazine;b) cyclo-1,3-(poly[1-hydroxyl-2,6-phenylenemethylene)])-5-hydroxy-s-triazine;c) [1-(phenoxy)-3-(phenoxy')-5-hydroxy-s-triazine-]poly[1-hydroxyl-(2,6-pheny lene methylene)];d) a ladder polymer containing randomly interdispersed s-triazine 'steps'; ande) a star polymer containing randomly interdispersed s- triazine connector sites for poly[1-hydroxyl-(2,6-phenylene methylene)] groups but where one or more pendant hydroxyl-s-triazine functions are also present.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: June 15, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. DeRosa, Benjamin J. Kaufman
  • Patent number: 5207891
    Abstract: A composition of matter useful as an asphaltene dispersant, comprising a mixture of:(a) poly[P,P'-(propylene oxide-400)phosphite) poly[di(propylene oxide--400)diol)]]-P,P diasphalenate;(b) poly[P,P'-(propylene oxide-400)phosphite -poly[di(propylene oxide--1000) diol)]]-P,P'-diasphalenate;(c) Poly[P,P'-(propylene oxide-400)phosphite) -poly(propylene oxide-400-poly(propylene oxide-1000)diol)]]-P-P'-diasphalenate(d) Poly[P,P'-(propylene oxide-1000)phosphite -poly[di(propylene oxide-400) diol)]]-P,P'-diasphalenate;(e) poly[P,P'-(propylene oxide-1000)phosphite) poly[di(propylene oxide-1000)diol)]]-P,P'-diasphalenate;(f) poly[P,P'(propylene oxide-1000)phosphite) poly[di([propylene oxide-400-poly (propylene oxide-1000)diol)]]-P,P'-diasphaltenate;(g) cyclo[P,P'-di(polypropylene oxide -400)phosphite]-P,P'-diasphaltenate;(h) cyclo[P,P'-di-(polypropylene oxide-1000) phosphite]-P,P'-diasphaltenate;(i) cyclo[P,P'-(polypropyleneoxide-400) -(polypropyleneoxide-1000)-phosphite]-P,P'diasphaltenate;(j) poly[(dipropyleneoxide-4
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: May 4, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. DeRosa, David A. Storm, Benjamin J. Kaufman
  • Patent number: 5207938
    Abstract: A method of retarding the darkening effect of a unreacted, excess antioxidant amine in a DAOCP comprising:(a) reacting an organic compound with a finished DAOCP containing an unreacted excess antioxidant amine to form therewith an adduct product; and(b) recovering the DAOCP containing the formed adduct product, whereby the darkening of the DAOCP is retarded.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: May 4, 1993
    Assignee: Texaco Inc.
    Inventor: Theodore E. Nalesnik
  • Patent number: 5202056
    Abstract: A composition of matter useful as an asphaltene dispersant, comprising a mixture of:(a) poly[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-400) alcohol;(b) poly[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-400) alcohol;(c) poly[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-1000) alcohol;(d) poly[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-1000) alcohol;(e) poly{star[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-400)} alcohol;(f) poly{star[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-400)} alcohol;(g) poly{star[di(propylene oxide-400)phosphite]-g-poly(propylene oxide-1000) } alcohol; and(h) poly{star[di(propylene oxide-1000)phosphite]-g-poly(propylene oxide-1000)} alcohol.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: April 13, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. Derosa, David A. Storm, Benjamin J. Kaufman
  • Patent number: 5199959
    Abstract: A method has been developed to solubilize hydroxy S-triazines containing at least one hydroxy function in diesel fuel and to enhance their overall thermal stability. The products which result from the full or partial encapsulation of hydroxy-S-triazine with calix[8]arene have unique and novel properties and reduce or eliminate nitrogen oxides level in diesel fuel.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: April 6, 1993
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Thomas F. Derosa, Benjamin J. Kaufman
  • Patent number: 5200100
    Abstract: Multi-functional viscosity index improvers for lubricating oils containing an EPM or EPDM polymer onto which has been grafted an unsaturated functional monomer containing phenothiazine.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: April 6, 1993
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Theodore E. Nalesnik, Robert T. Biggs, Benjamin J. Kaufman
  • Patent number: 5198597
    Abstract: Normal olefins such as n-butenes and normal alkanes such as n-butane can be coverted to branched olefin species such as isobutylene by skeletal dehydroisomerization over catalysts preferably containing metals selected from Groups IB, IIB, IIIB, IVB, VB, VIB, VIIB, VIII and the rear earth elements which are deposited upon borosilicate zeolites having pore sizes of at least about 5 Angstroms and containing boron in the framework structure thereof. The borosilicates have sufficient acidity to catalyze the skeletal isomerization of both normal alkanes and normal olefins. The catalysts can be used to produce isoolefins for reaction with alcohols in integrated processes to produce alkyl tertiary alkyl ethers such as MTBE.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: March 30, 1993
    Assignee: Texaco Inc.
    Inventors: Chi-Lin O'Young, James E. Browne, John F. Matteo, Robert A. Sawicki, John Hazen
  • Patent number: 5182247
    Abstract: Normal olefins such as n-butene can be converted to branched species by skeletal isomerization over catalysts containing solid acids prepared by sulfating catalyst precursors containing hydrous metal oxides--e.g., aluminas, silica-aluminas or clays treated with sulfuric acid, metal sulfates, sulfur trioxide or organic sulfates. The catalyst precursors are sulfated sufficiently to produce the desired skeletal isomerization without substantial cracking under suitable isomerization conditions.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: January 26, 1993
    Assignee: Texaco Inc.
    Inventors: Erven J. Kuhlmann, James R. Pascoe, James E. Browne, Kevin J. Martin