Patents Assigned to Exxon Research & Engineering
  • Patent number: 6462140
    Abstract: In accordance with the present invention, there is provided a novel composition of matter having the formula: wherein Ra, Rb, Rc, Rd and Re are independently selected from the group consisting of H, alkyl groups and substituted alkyl groups having about 1 to 106 carbon atoms, alkenyl groups and substituted alkenyl groups having about 3 to 106 carbon atoms, wherein the substituents on the alkyl and/or alkenyl groups are selected from the group consisting of alkoxy, halogen, CN, OH, HO(CH2CH2O)x (X=1-10), acyl, acyloxy and aryl substituents.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: October 8, 2002
    Assignee: Exxon Research & Engineering Co.
    Inventor: Stanley J. Brois
  • Patent number: 6319960
    Abstract: A method for hydrocarbon synthesis reactions from carbon monoxide and hydrogen using a catalyst pellet which includes a solid core and a coated layer of porous support impregnated with a catalyst which optimizes the CO conversion.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: November 20, 2001
    Assignee: Exxon Research & Engineering Company
    Inventors: William C. Behrmann, Kym B. Arcuri, Charles H. Mauldin, Mordechay Herskowitz
  • Publication number: 20010007893
    Abstract: In accordance with the present invention, there is provided a novel composition of matter having the formula: 1
    Type: Application
    Filed: February 9, 2001
    Publication date: July 12, 2001
    Applicant: Exxon Research & Engineering Co.
    Inventor: Stanley J. Brois
  • Patent number: 6090289
    Abstract: Structures comprising an upper crystalline molecular sieve layer on a support, the crystals being at least partially oriented normal to the plane of the layer, there being a dense intermediate crystalline molecular sieve layer between the support and upper layer.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: July 18, 2000
    Assignee: Exxon Research & Engineering Co.
    Inventors: Johannes Petrus Verduijn, Antonie Jan Bons, Marc Henri Carolina Anthonis, Lothar Ruediger Czarnetzki, Wilfried Jozef Mortier
  • Patent number: 6077915
    Abstract: In accordance with the present invention, there is provided a novel composition of matter having the formula: ##STR1## wherein R.sub.a, R.sub.b, R.sub.c, R.sub.d and R.sub.e are independently selected from the group consisting of H, alkyl groups and substituted alkyl groups having about 1 to 10.sup.6 carbon atoms, alkenyl groups and substituted alkenyl groups having about 3 to 10.sup.6 carbon atoms, wherein the substituents on the alkyl and/or alkenyl groups are selected from the group consisting of alkoxy, halogen, CN, OH, HO(CH.sub.2 CH.sub.2 O).sub.x (X=1-10), acyl, acyloxy and aryl substituents.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: June 20, 2000
    Assignee: Exxon Research & Engineering
    Inventor: Stanley J. Brois
  • Patent number: 5939364
    Abstract: Multifunctional molybdenum compounds, which are the reactive product of molybdenum dithiocarbamates and (non-metal containing) dihydrocarbyl dithiophosphoric acids, and the oils that contain them are new compositions which are useful as lubricant additives. They impart to the lubricant formulations to which they are added low friction and excellent friction retention properties.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: August 17, 1999
    Assignee: Exxon Research & Engineering Co.
    Inventors: Richard Samuel Polizzotti, Elisavet P. Vrahopoulou, Stephen D. Cameron, Charles Frederick Pictroski
  • Patent number: 5906968
    Abstract: A method of making an oil-soluble or oil-dispersible trinuclear molybdenum-sulfur compound, comprising: reacting two to less than three equivalents of a tetrahydrocarbyl thiuram disulfide and one equivalent of a compound containing the ?Mo.sub.3 S.sub.13 !.sup.2- ion to produce a trinuclear molybdenum compound of the formula Mo.sub.3 S.sub.x (L).sub.4 wherein x is from 4 to 10 and L is dihydrocarbyl-dithiocarbamate.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: May 25, 1999
    Assignee: Exxon Research & Engineering Company
    Inventors: Jonathan M. McConnachie, Edward I. Stiefel, Ian Alexander Weston Bell, Velautha-Cumaran Arunasalam
  • Patent number: 5866495
    Abstract: A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the catalyst at elevated temperatures with a source of chlorine such as HCl or Cl.sub.2, and preferably oxygen and water, contacting the catalyst at elevated temperatures with oxygen and optionally water, and contacting the catalyst at elevated temperatures with hydrogen and optionally water to reduce the catalyst. Preferably the noble metal is platinum.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 2, 1999
    Assignee: Exxon Research & Engineering Company
    Inventors: Shun C. Fung, Samuel J. Tauster, Jay Y. Koo
  • Patent number: 5824617
    Abstract: Applicant has discovered a new zeolite membrane and a process for preparing the same. The membrane is unique in that the zeolite crystals making up the membrane pack in a manner such that the membrane is essentially continuous with no large scale voids even when the membrane is <10 .mu.m thick. Thus, the present invention is directed toward a zeolite membrane wherein said membrane is comprised of a porous substrate and a layer of zeolite crystals wherein said layer of zeolite crystals is a polycrystalline layer with at least 99% of said zeolite crystals having at least one point between adjacent crystals that is .ltoreq.20 .ANG. and wherein at least 90% of said crystals have widths of from about 2 to about 50 microns and wherein at least 75% of said crystals have a thickness of within 20% of the average crystal thickness and wherein said membrane has at most 1 V % voids in said zeolite layer.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: October 20, 1998
    Assignee: Exxon Research & Engineering Company
    Inventor: Wenyih Frank Lai
  • Patent number: 5824208
    Abstract: Disclosed is a catalytic cracking process which incorporates a short contact time catalytic cracking step. The short contact time cracking step provides for an overall increase in distillate quality as well as provides for an overall increase in the quantity of light olefins product. After the short contact time reaction step, gasoline and high quality distillate products are separated from a gas oil containing bottoms fraction, and the gas oil containing bottoms fraction is reprocessed.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: October 20, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Martin G. Bienstock, Paul K. Ladwig
  • Patent number: 5776849
    Abstract: The invention is directed a process for regenerating deactivated reforming catalysts comprising at least one Group VIII metal on zeolite L, preferably wherein the catalysts are extruded using a binder material such as alumina or silica. The process includes: a) coke burn at severe conditions to improve the accessibility of the Group VIII catalytic metal particles by transporting them to the outside of the zeolite microchannels; b) catalytic metal redispersion by wet oxychlorination with elemental chlorine and oxygen; c) stripping with a gas stream comprising oxygen and water at low pressure to remove as much residual chlorine as possible; and d) reduction of catalytic metals with hydrogen at low pressure. The process is particularly effective for recovering activity of catalysts which have been severely deactivated.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: July 7, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Shun Chong Fung, Yao-Jyh Robert Huang, John Francis Walsh, Gary Brice McVicker, Kenneth Ray Clem
  • Patent number: 5773381
    Abstract: Zeolite L containing caesium is prepared by a process in which said zeolite L is crystallised from a synthesis mixture with a molar composition (expressed as oxides) of:______________________________________ K.sub.2 O/SiO.sub.2 0.15 to 0.40 K.sub.2 O/Cs.sub.2 O 3 to 10 H.sub.2 O/K.sub.2 O 40 to 100 and SiO.sub.2 /Al.sub.2 O.sub.3 7 to 13 ______________________________________and containing 0.5 to 15 ppm (by weight) of divalent metal carbons, e.g. Mg ions. The zeolite L can form part of a dehydrocyclisation and/or isomerisation catalyst.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: June 30, 1998
    Assignee: Exxon Research & Engineering Co.
    Inventors: Johannes Petrus Verduijn, Pieter Ernst Gellings
  • Patent number: 5770629
    Abstract: A slurry hydrocarbon synthesis process employs a slurry filtration vessel external of the slurry reactor. Slurry from the reactor is passed through one or more gas and solids disengaging zones, one or more of which may be present in the reactor and vessel, to reduce the gas and solids content of the slurry before it contacts the filter in the vessel. The filter separates the slurry hydrocarbon liquid from the gas and solids as a filtrate which is sent to upgrading. Valves in gas and fluid conduits enable the filtration vessel to be isolated from the reactor for maintenance, to replace filters and to aid in controlling slurry flow through the vessel. A hydrogen rich gas may be injected into the filtration vessel to prevent catalyst deactivation. Slurry is hydraulically circulated between the reactor and vessel due to density differences while the reactor is operating.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: June 23, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Charles W. Degeorge, Min Chang
  • Patent number: 5770542
    Abstract: It has been discovered that waxy feeds can be upgraded using a catalyst made by combining powdered dewaxing catalyst with powdered isomerization catalyst said mixture of powdered catalysts being formed into a discrete particle.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: June 23, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Dee Anne Brandes, David N. Zinkie, Sandra J. Alward
  • Patent number: 5763348
    Abstract: A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the catalyst at elevated temperatures with a source of chlorine such as HCl or Cl.sub.2, and preferably oxygen and water, contacting the catalyst at elevated temperatures with oxygen and optionally water, and contacting the catalyst at elevated temperatures with hydrogen and optionally water to reduce the catalyst. Preferably the noble metal is platinum.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 9, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Shun C. Fung, Samuel J. Tauster, Jay Y. Koo
  • Patent number: 5741864
    Abstract: The present invention provides a functionalized styrenic polymer or copolymer which contains functionalized stryene moiety having the formula: ##STR1## wherein R.sub.1 is hydrogen, alkyl, primary and secondary halo alkyl groups, and R.sub.2 is: ##STR2## where n is an integer of from 2 to about 10, R.sub.3 is independently hydrogen or an alkyl group and X is NH, O or S. The novel copolymers of the present invention have particular utility in forming polymer blends. For example, the amine and alcohol functionalized polymers can be used as compatabilizers by reacting them with a carboxylic acid containing polymer or the like.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: April 21, 1998
    Assignee: Exxon Research & Engineering Company
    Inventor: Abhimanyu Onkar Patil
  • Patent number: 5728320
    Abstract: An improved dispersant formulation for dispersing oil which contains a mixture of a sorbitan monoester of an aliphatic monocarboxylic acid, a polyoxyethylene adduct of a sorbitan monoester of an aliphatic monocarboxylic acid, an alkali metal salt of a dialkyl sulfosuccinate, a polyoxyethylene adduct of a sorbitan triester or a sorbitol hexaester of an aliphatic monocarboxylic acid and a solvent comprising at least one of a propylene glycol ether, ethylene glycol ether, water, alcohol, glycol, and a paraffinic hydrocarbon.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: March 17, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Robert J. Fiocco, Kenneth W. Becker, Gerard P. Canevari, Richard R. Lessard
  • Patent number: 5726112
    Abstract: A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the catalyst at elevated temperatures with a source of chlorine such as HCl or Cl.sub.2, and preferably oxygen and water, contacting the catalyst at elevated temperatures with oxygen and optionally water, and contacting the catalyst at elevated temperatures with hydrogen and optionally water to reduce the catalyst. Preferably the noble metal is platinum.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 10, 1998
    Assignee: Exxon Research & Engineering
    Inventors: Shun C. Fung, Samuel J. Tauster, Jay Y. Koo
  • Patent number: 5716527
    Abstract: Membranes useful in separating moleculres or catalytic conversions comprise a substrate, a zeolite or zeolite-like layer, a selectivity enhancing coating in contact with the zeolite layer and optionally a permeable intermediate layer in contact with the substrate the zeolite layer being in contact either with the substrate or the optional intermediate layer.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: February 10, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Harry William Deckman, Edward William Corcoran, Jr., James Alexander McHenry, Wenyih Frank Lai, Lothar Ruediger Czarnetzki, William Edward Wales
  • Patent number: 5712214
    Abstract: A low-pressure, high-temperature, wet post-treatment after oxyhalogenation during regeneration to improve activity and selectivity recovery of a regenerated catalyst involves exposing a halogenated catalyst to a gaseous stream including water having a partial pressure of up to about 1.5 psia, oxygen having a partial pressure of less than about 4.5 psia, and an inert gas at a temperature within the range of about 450.degree. C. to about 530.degree. C. at a pressure within the range of about 14.7 psia to about 65 psia for a time sufficient to effect a hydrogen halide partial pressure in offgas from the halogenated catalyst of less than about 0.004 psia to effectively remove excess halide from the halogenated catalyst.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: January 27, 1998
    Assignee: Exxon Research & Engineering Company
    Inventors: Yao-Jyh Robert Huang, Shun Chong Fung