Patents Assigned to Exxon Research & Engineering Co.
  • 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: 6332974
    Abstract: A wide-cut lubricant base stock is made by hydroisomerizing and then catalytically dewaxing a waxy Fischer-Tropsch synthesized hydrocarbon fraction feed and comprises the entire dewaxate having an initial boiling point in the 650-75O° F.+ range. Formulated lubricating oils made by admixing the base stock with a commercial automotive additive package meet all specifications, including low temperature properties, for multigrade internal combustion engine crankcase oils. The waxy feed has an initial boiling point in the 650-750° F. range and continuously boils to an end point of at least 1050° F.+. Lower boiling hydrocarbons produced by the process are separated from the base stock by simple flash distillation. The base stock comprises the entire dewaxate having an initial boiling point in the 650-750° F. range.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: December 25, 2001
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert J. Wittenbrink, Daniel F. Ryan, Paul J. Berlowitz, Jacob J. Habeeb
  • Patent number: 6296755
    Abstract: A novel scheme for olefin recovery/separation based on the redox properties of metal dithiolene complexes is described. The complex, [1,2-bis(cyano)ethylene-1,2-dithiolato]nickel, [Ni(S2C2(CN)2)2], when generated electrochemically, binds olefin to form an adduct. The olefin is released when the olefin adduct is reduced electrochemically. The reduced form of the metal dithiolene complex can then be re-oxidized to complete the cycle. For olefins such as 1-hexene, propylene, and ethylene, fast olefin binding and release is observed when modulated electrochemically. Olefin binding/release rates are fast as compared to the electrochemistry experiment (second or sub-second time-scale).
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: October 2, 2001
    Assignee: Exxon Research and Engineering Co.
    Inventors: Kun Wang, Edward Ira Stiefel
  • Patent number: 6284372
    Abstract: A composite having fibers of relatively high elastic modulus embedded in a matrix of relatively low elastic modulus is provided with an interphase of elastic modulus less than the matrix modulus and cohesive energy higher than the matrix cohesive energy. The resulting composite has enhanced strength and toughness.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: September 4, 2001
    Assignee: Exxon Research and Engineering Co.
    Inventors: Liza M. Monette, Arnold Lustiger, Michael P. Anderson, John P. Dismukes, H. Daniel Wagner, Cary N. Marzinsky, Russell R. Mueller
  • Patent number: 6267912
    Abstract: A novel injector/reactor apparatus and an efficient process for the partial oxidation of light hydrocarbon gases, such as methane, to convert such gases to useful synthesis gas for recovery and/or subsequent hydrocarbon synthesis. Sources of a light hydrocarbon gas, such as methane, and oxygen or an oxygen-containing gas are preheated and pressurized and injected through an injector means at high velocity into admixture with each other in the desired relative proportions, at a plurality of mixing nozzles which are open to the catalytic partial oxidation reaction zone and are uniformly-spaced over the face of the injector means, to form a reactant gaseous premix having a pressure drop equal to at least about 3% of the lowest upstream pressure of either of said gases.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: July 31, 2001
    Assignee: Exxon Research and Engineering Co.
    Inventors: Frank Hershkowitz, Harry W. Deckman, Robert P. Reynolds, Constantine P. Gonatas, John W. Fulton, Leonard Schoenman, Jack I. Ito, Leroy R. Clavenna
  • 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: 6162956
    Abstract: A Fischer-Tropsch derived distillate fraction is blended with either a raw gas field condensate distillate fraction or a mildly hydrotreated condensate fraction to obtain a stable, inhibited distillate fuel.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: December 19, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Paul J. Berlowitz, Robert J. Wittenbrink
  • Patent number: 6156872
    Abstract: The invention is related to non-linear, paraffin-soluble olefin/carbon monoxide and olefin/acetylene/carbon monoxide copolymers. The invention is also related to a method for preparing olefin/carbon monoxide copolymers by heating a feed of at least one olefin, carbon monoxide, carbon dioxide, hydrogen, and methane in the presence of a free radical polymerization initiator. More particularly, the feed comprises at least one olefin, the total olefin amount ranging from about 5 to about 40 mole %, carbon monoxide in an amount ranging from about 1 to about 40 mole %, hydrogen in an amount ranging from about 4 to about 55 mole %, carbon dioxide in an amount ranging from about 3 to about 10 mole %, and methane in an amount ranging from about 4 to about 85 mole %. The feed may also include acetylene in an amount ranging up to about mole %.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: December 5, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Abhimanyu O. Patil, Donald N. Schulz, Raymond A. Cook, Michael G. Matturro
  • Patent number: 6150309
    Abstract: The use of oil soluble organo molybdenum compounds in combination with phenolic or amenic antioxidants has been found to improve the dispersancy retention capability of crankcase lubricants. Thus in one embodiment the present invention comprises improving dispersancy retention of a crankcase lubricant by including in the crankcase lubricant composition an oil soluble organomolybdenum compounds and at least one of a phenolic or aminic antioxidant. Particularly preferred organomlybdenum compounds are molybdenum dithiocarbamates while a mixture of a diarylamine and two phenolic antioxidants are preferred.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: November 21, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Jason Z. Gao, Kim E. Fyfe, John D. Elnicki
  • Patent number: 6126814
    Abstract: A process for hydrodesulfurizing naphtha feedstream wherein the reactor inlet temperature is below the dew point of the feedstock at the reactor inlet so that the naphtha will completely vaporize within the catalyst bed. It is preferred to use a catalyst comprised of about 1 to about 10 wt. % MoO.sub.3, about 0.1 to about 5 wt. % CoO supported on a suitable support material. They are also characterized as having an average medium pore diameter from about 60 .ANG. to 200 .ANG., a Co/Mo atomic ratio of about 0.1 to about 1.0, a MoO.sub.3 surface concentration of about 0.5.times.10.sup.-4 to about 3.0.times.10.sup.-4 g MoO.sub.3 /m.sup.2, and an average particle size of less than about 2.0 mm in diameter.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: October 3, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Mark P. Lapinski, Kenneth L. Riley, Thomas R. Halbert, William Lasko, Jeffrey L. Kaufman
  • Patent number: 6123830
    Abstract: Disclosed is a catalytic cracking process that includes more than one catalytic cracking reaction step. The process integrates catalytic cracking steps with hydroprocessing in order to maximize olefins production, distillate quality and octane level of the overall cracked product. Preferably, one hydroprocessing step is included between the cat cracking reaction steps, and a portion of the hydroprocessed products, i.e., a naphtha and mid distillate fraction, is combined with cracked product for further separation and hydroprocessing. It is also preferred that the first catalytic cracking reaction step be a short contact time reaction step.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: September 26, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ramesh Gupta, Edward S. Ellis
  • Patent number: 6123832
    Abstract: The invention relates to Fluid Catalytic Cracking (FCC) for producing liquid fuels and light olefins from liquid hydrocarbon mixtures such as petroleum fractions.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: September 26, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Teh Chung Ho, Shun Chong Fung, Gordon Frederick Stuntz, Robert Charles Welch, Daniel Paul Leta
  • Patent number: 6117814
    Abstract: Supports for Fischer-Tropsch catalysts with increased strength and attrition resistance are formed by incorporating both silica and alumina into a support comprised primarily of titania; whereupon Fischer-Tropsch active metals can be composited with the support; the catalysts being particularly useful in slurry reactions.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: September 12, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Stanislaw Plecha, Charles H. Mauldin, Larry E. Pedrick
  • Patent number: 6118035
    Abstract: A process for selectively producing C.sub.2 -C.sub.4 olefins from a catalytically cracked or thermally cracked naphtha stream is disclosed. A mixture of the naphtha stream and a stream of steam is feed into a reaction zone where it is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500 to 650.degree. C. and a hydrocarbon partial pressure from about 10 to 40 psia.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: September 12, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Shun C. Fung, Tan-Jen Chen, Marcel J. G. Janssen, William A. Wachter, Brian Eric Henry, John Ernest Asplin
  • Patent number: 6114443
    Abstract: The present invention is based on the discovery that diblock copolymers of ethylene and an atactic alpha-olefin that are prepared in the presence of a catalyst system comprising at least one metallocene compound and a non-coordinating anion are especially useful as compatibilizers with blends of polyethylene and isotactic poly-alpha-olefin homopolymers.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: September 5, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: David John Lohse, Henry Wu-Hsiang Yang
  • Patent number: 6106653
    Abstract: The density of hydroxyl groups present on the surface of glass, such as E-glass fibers, is increased by subjecting the surface to a radio frequency induced gas plasma containing water vapor. Surfaces so treated exhibit enhanced adsorption of hydrolyzed organo silane coupling agents applied to improve adhesion between glass fibers and resin matrices in the manufacture of reinforced composites.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: August 22, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Richard S. Polizzotti, Mohsen Yeganeh, Shawn M. Dougal
  • Patent number: 6103206
    Abstract: Very low sulfur content hydrocarbon gas is achieved by sequentially contacting the gas first with zinc oxide and then with nickel metal. This has reduced the total sulfur content of natural gas feed for a fluid bed syngas generator to less than 0.1 ppm and has resulted in greater syngas productivity. A zinc oxide guard bed downstream of the syngas generator reduces the total sulfur content of the syngas to less than 10 vppb and preferably less than 5 vppb. This very low sulfur content syngas is used for sulfur sensitive processes, such as hydrocarbon synthesis. The process is especially useful for natural gas which contains H.sub.2 S, COS, mercaptans and other sulfur bearing compounds.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: August 15, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: James H. Taylor, Jr., James P. Glass, Jr., Geoffrey R. Say, Richard P. O'Connor
  • Patent number: 6103773
    Abstract: A gas conversion process comprising synthesis gas production, hydrocarbon synthesis and hydrogen production from the synthesis gas, also includes hydrodesulfurizing sulfur-containing hydrocarbon liquids separated from a mixture of natural gas and the liquids produced from a gas well. Hydrogen produced from the synthesis gas is used for the hydrodesulfurization, to remove at least a portion of the sulfur as H.sub.2 S and form desulfurized hydrocarbon liquid. The hydrogen is produced from the synthesis gas by one or more of (i) physical separation means such as pressure swing adsorption and (ii) chemical means such as a water gas shift reactor. The synthesized hydrocarbons are upgraded by hydroconversion. A portion of the hydrogen produced from the synthesis gas may also be used for at least one of (i) hydrocarbon synthesis catalyst rejuvenation and the hydroconversion.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: August 15, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Robert J. Wittenbrink, Charles W. DeGeorge
  • Patent number: 6103832
    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: February 10, 1998
    Date of Patent: August 15, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventor: Abhimanyu Onkar Patil
  • Patent number: RE37406
    Abstract: A supported particulate cobalt catalyst is formed by dispersing cobalt, alone or with a metal promoter, particularly rhenium, as a thin catalytically active film upon a particulate support, especially a silica or titania support. This catalyst can be used to convert an admixture of carbon monoxide and hydrogen to a distillate fuel constituted principally of an admixture of linear paraffins and olefins, particularly a C10+ distillate, at high productivity, with low methane selectivity. A process is also disclosed for the preparation of these catalysts.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: October 9, 2001
    Assignee: Exxon Research and Engineering Co.
    Inventors: William C. Behrmann, Kym B. Arcuri, Charles H. Mauldin