Patents Assigned to Exxon Research & Engineering Co.
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Patent number: 6462140Abstract: 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: GrantFiled: February 9, 2001Date of Patent: October 8, 2002Assignee: Exxon Research & Engineering Co.Inventor: Stanley J. Brois
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Publication number: 20010007893Abstract: In accordance with the present invention, there is provided a novel composition of matter having the formula: 1Type: ApplicationFiled: February 9, 2001Publication date: July 12, 2001Applicant: Exxon Research & Engineering Co.Inventor: Stanley J. Brois
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Patent number: 6090289Abstract: 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: GrantFiled: April 3, 1997Date of Patent: July 18, 2000Assignee: Exxon Research & Engineering Co.Inventors: Johannes Petrus Verduijn, Antonie Jan Bons, Marc Henri Carolina Anthonis, Lothar Ruediger Czarnetzki, Wilfried Jozef Mortier
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Patent number: 5939364Abstract: 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: GrantFiled: December 12, 1997Date of Patent: August 17, 1999Assignee: Exxon Research & Engineering Co.Inventors: Richard Samuel Polizzotti, Elisavet P. Vrahopoulou, Stephen D. Cameron, Charles Frederick Pictroski
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Patent number: 5773381Abstract: 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: GrantFiled: June 2, 1995Date of Patent: June 30, 1998Assignee: Exxon Research & Engineering Co.Inventors: Johannes Petrus Verduijn, Pieter Ernst Gellings
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Patent number: 5597474Abstract: The present invention relates to an integrated fluid coking/hydrogen production process. The fluid coking unit is comprised of a fluid coker reactor, a heater, and a gasifier. Solids from the fluidized beds are recycled between the coking zone and the heater and between the heater and the gasifier. A separate stream of hot solids from the gasifier is passed to the scrubbing zone of the reactor. Methane and steam are introduced into the stream of hot solids passing from the gasifier to the scrubbing zone. The hot particles act to catalyze the conversion of methane to carbon monoxide and hydrogen in the presence of steam.Type: GrantFiled: November 14, 1994Date of Patent: January 28, 1997Assignee: Exxon Research & Engineering Co.Inventors: Michael C. Kerby, Roby Bearden, Jr., Stephen M. Davis, LeRoy Clavenna
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Patent number: 5503761Abstract: A synthetic ester base stock having reduced deposit formation which comprises the reaction product of technical pentaerythritol and a mixture of carboxylic acids. The mixture of carboxylic acids comprises (1) at least one C.sub.8 -C.sub.10 carboxylic acid having 6 or less reactive hydrogens, (2) at least one C.sub.5 -C.sub.7 carboxylic acid having 6 or less reactive hydrogens and (3) at least one C.sub.6 -C.sub.10 carboxylic acid having 6 or more reactive hydrogens.Type: GrantFiled: August 2, 1994Date of Patent: April 2, 1996Assignee: Exxon Research & Engineering Co./Hatco Corp.Inventors: Thomas L. Ashcraft, Jr., Paul J. Berlowitz, Max J. Wisotsky, Dale D. Carr, Thomas G. Schaefer
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Patent number: 5503774Abstract: The present invention provides for enhanced bioremediation of hydrocarbon contaminated soils and waters by treating soil or water with a surfactant or mixture of surfactants having the general formulae: ##STR1## wherein A=CH.sub.2, B=CH.sub.2 CH.sub.2 O, x=1-10 and y=2-20.Type: GrantFiled: July 15, 1994Date of Patent: April 2, 1996Assignee: Exxon Research & Engineering Co.Inventors: Cornelius H. Brons, Jan Bock, Ramesh Varadaraj, Stanley J. Brois
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Patent number: 5504262Abstract: The present invention relates to a method for making mixtures of ethanol and methanol by reacting methane, water and an acidic aqueous solution of a electron acceptor, preferably Fe.sub.2 (SO.sub.4).sub.3 or Fe(ClO.sub.4).sub.3, having a pH of less than 3, preferably 1 to 3, more preferably 1 to 2 in the presence of a noble metal catalyst, typically platinum or palladium, having a diameter of at least about 100 .ANG. at a temperature of at least 60.degree. C. to about 100.degree. C. The process is advantageous as it provides a method of making ethanol directly from methanol at low cost and high thermodynamic efficiency.Type: GrantFiled: December 23, 1994Date of Patent: April 2, 1996Assignee: Exxon Research & Engineering Co.Inventors: Thomas H. Vanderspurt, John J. Knarr, Anthony W. Ho
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Patent number: 5498673Abstract: The present invention provides a functionalized styrenic polymer or copolymer which contains functionalized para-alkystryene moiety having the formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from hydrogen, alkyl and primary and secondary halo alkyl, and R.sub.4 is selected from a group having the formula: ##STR2## wherein x is an integer of from 2 to about 10, y is an integer from ranging from 0 to about 20 and A is a linear hydrocarbyl group of from 2 to about 10 carbon atoms or a branched hydrocarbyl group of from 3 to about 10 carbon atoms.Type: GrantFiled: November 29, 1994Date of Patent: March 12, 1996Assignee: Exxon Research & Engineering Co.Inventor: Abhimanyu O. Patil
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Patent number: 5498638Abstract: High conversion, substantially once-through hydrocarbon synthesis is achieved by reacting H.sub.2 and CO in a first stage(s) in the presence of a non-shifting catalysts, separating liquid products and reacting the remaining gas streams in the presence of hydrocarbon synthesis catalysts having shifting activity.Type: GrantFiled: April 29, 1994Date of Patent: March 12, 1996Assignee: Exxon Research & Engineering Co.Inventor: David C. Long
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Patent number: 5476982Abstract: The present invention is directed to a novel catalyst composition and its use in the dehydrogenation of paraffins to olefins. The catalyst comprises an alloy of a Group VIII noble metal and a metal selected from the group consisting of zinc and gallium on a support selected from the group consisting of silica, zinc oxide modified silica and zinc oxide modified silica-pillared clays when said alloy is a zinc alloy, and silica, gallium oxide modified silica and gallium oxide modified silica-pillared clays when said alloy is a gallium alloy. The instant catalyst is an active and selective catalyst for the catalytic dehydrogenation of paraffins to olefins, especially gaseous paraffins, having the added benefit of retaining high activity and selectivity even following repeated regeneration by calcination in oxygen containing gas at temperatures of 450.degree. C. to 650.degree. C., preferably 450.degree. C. to 500.degree. C.Type: GrantFiled: June 14, 1994Date of Patent: December 19, 1995Assignee: Exxon Research & Engineering Co.Inventors: John L. Robbins, Elise Marucchi-Soos, Jack W. Johnson, John F. Brody
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Patent number: 5470358Abstract: Aromatic amines of the formula ##STR1## where R.sub.1 is C.sub.1 -C.sub.10 alkyl or halogen and n is an integer from 0 to 3 are effective in increasing the motor octane number of aviation gasolines to 98 or greater without the presence of lead additives.Type: GrantFiled: April 19, 1994Date of Patent: November 28, 1995Assignee: Exxon Research & Engineering Co.Inventor: Roger G. Gaughan
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Patent number: 5466364Abstract: The daylight stability, foaming characteristics, color, engine performance test behavior, oxygenates content, and thermal stability of wax isomerate oils and/or hydrocarbon synthesis liquid products are improved by the process of contacting the aforesaid wax isomerate oil and/or hydrocarbon synthesis liquid products with a silica adsorbent, said silica adsorbent being characterized by possessing a pore size of at least about 100 .ANG., preferably at least about 125 .ANG., most preferably at least about 150 .ANG., an alkali/alkaline earth ion concentration, excluding sodium, of greater than about 125 ppm, an iron content of less than about 40 ppm and a zirconium content of less than about 130 ppm.Type: GrantFiled: July 2, 1993Date of Patent: November 14, 1995Assignee: Exxon Research & Engineering Co.Inventors: Bal K. Kaul, Craig Y. Sabottke, Rocco A. Fiato, Edward Niessen
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Patent number: 5466376Abstract: The presence of carryunder in the extract phase recovered from a solvent extraction tower is an indication of unsatisfactory performance. The continuous analysis of the extract phase using a turbidity analyzer to detect the presence of two phases, indicating carryunder permits corrective measures to be taken in tower operation to reduce or eliminate carryunder.Type: GrantFiled: April 29, 1994Date of Patent: November 14, 1995Assignee: Exxon Research & Engineering Co.Inventors: Joseph P. Boyle, Gordon C. Camano, Randall S. Lachine, Howard R. Lingley, Raymond W. Saunders
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Patent number: 5464523Abstract: A method and a sensor to measure the sulfur activity in sulfur-containing environments are disclosed. The active component is a non-stoichiometric metal sulfide foil or film. In the case of a thin sulfide film, a ceramic substrate is employed for improved mechanical rigidity. The electrical conductivity of the sulfide is related to the sulfur activity of the process stream to which it is exposed.Type: GrantFiled: May 18, 1994Date of Patent: November 7, 1995Assignee: Exxon Research & Engineering Co.Inventors: Trikur A. Ramanarayanan, Vinod K. Pareek, James D. Mumford, III, Horst Witzke
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Patent number: 5462680Abstract: This invention relates to novel compositions of matter comprising free radical adducts of a fullerene with one or more saturated hydrocarbons having a number average molecular weight ranging from about 200 to about ten million. Attachment of saturated hydrocarbons to as many as fourteen sites on the fullerene surface can be achieved via free radical initiated reactions. Fullerenes also add to saturated hydrocarbons with functional groups selected from the group consisting of hydroxy, carboxy, and carboalkoxy radicals in the presence of a free radical initiator. Said radical adducts of substantially saturated hydrocarbons with fullerenes react further with alkylamines and polyamines to produce new compositions. The radical adducts, and their aminated derivatives are useful as dispersants and viscosity modifiers in lubricants.Type: GrantFiled: April 19, 1994Date of Patent: October 31, 1995Assignee: Exxon Research & Engineering Co.Inventors: Stanley J. Brois, Abhimanyu O. Patil, Wolfgang W. Schulz, Chang S. Hsu, Richard T. Garner
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Patent number: 5459122Abstract: An aromatic oil having an aniline point less than 120.degree. F., a mutagenicity index based on The Modified Ames Test of less than 2.0, a benzene, naphthalene and methyl substituted benzenes and naphthalenes individual component concentrations less than 100 wppm, and a clay gel aromatics fraction content of at least 50 weight % based on aromatic oil, said aromatics fraction characterized in that it has a naphthene-benzenes and dinaphthenebenzenes content of at least 50 volume % based on aromatics fraction. The invention also relates to a process for preparing the aromatic oil which comprises the steps of selective solvent extraction, selective distillation and two-stage hydrotreating with removal of hydrogen sulfide and/or ammonia. The aromatic oils are useful in agricultural formulations due to their low environmental impacts.Type: GrantFiled: April 26, 1994Date of Patent: October 17, 1995Assignee: Exxon Research & Engineering Co.Inventors: Thomas J. Ford, Gilbert V. Chambers
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Patent number: 5457253Abstract: By this invention there is provided a catalyst composition comprising a Group IVB oxide, an amorphous silica-alumina support having dispersed thereon a rare earth oxide, which as herein used also includes yttrium oxide, and a metal(s) selected from the group consisting of Group VIII noble metal(s), mixtures of Group VIII noble metal(s) and tin, mixtures of Group VIII noble metal(s) and rhenium, and mixtures of Group VIII noble metal(s), tin and rhenium. The amorphous silica-alumina support contains at least about 50% silica by weight. The catalyst can function as a hydrocarbon conversion catalyst in reactions where platinum on halided (Cl,F)-alumina is typically used.Type: GrantFiled: December 20, 1994Date of Patent: October 10, 1995Assignee: Exxon Research & Engineering Co.Inventors: Stuart L. Soled, Gary B. McVicker, William E. Gates, Sabato Miseo
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Patent number: 5455020Abstract: A synthetic gallosilicate zeolite having a 12-ring pore structure and a process for preparing it.Type: GrantFiled: June 24, 1994Date of Patent: October 3, 1995Assignee: Exxon Research & Engineering Co.Inventors: David E. W. Vaughan, Karl G. Strohmaier