Patents Represented by Attorney John J. Mahon
  • Patent number: 5919740
    Abstract: There are disclosed antioxidant additives for lubricating oils which exhibit reduced phosphorus volatility, the additives being sodium, potassium, lithium or oil soluble amine salts of a dialkyldithiophosphoric acid prepared by reacting P.sub.2 S.sub.5 with a mixture of alcohols consisting of (a) a polyol of the formula R(OH).sub.n where R is a C.sub.2 -C.sub.20 hydrocarbyl group and n is 2-10 and (b) an aliphatic monohydric alcohol having 3-18 carbon atoms, the mixture containing relative amounts of polyol and monohydric alcohol such that 50 mole % of the total OH groups are OH groups of the polyol.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: July 6, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventors: Ricardo A. Bloch, Alexander B. Boffa
  • Patent number: 5895779
    Abstract: A lubricating oil composition which exhibits improved fuel economy and fuel economy retention which contains the combination of (a) a dithiocarbamate of the formula R.sub.1 (R.sub.2)N--C(:S)--S--(CH.sub.2).sub.n --S--(:S)C--N(R.sub.2)R.sub.1 where n is 1-4 and R.sub.1 and R.sub.2 are C.sub.1 -C.sub.20 alkyl and (b) an oil soluble trinuclear friction modifying molybdenum compound, the two components functioning to provide an improvement in the friction reducing properties of the composition.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: April 20, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventor: Alexander B. Boffa
  • Patent number: 5888948
    Abstract: A two-cycle oil is disclosed comprising a high and low molecular weight polybutene polymer, solvent and mineral oil which has suitable viscosity and exhibits improved smoke performance in the JASO test.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: March 30, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Emil Joseph Meny, Charles F. Hoffman
  • Patent number: 5866096
    Abstract: ZSM-22 zeolite which is particularly pure and whose synthesis does not require the synthesis mixture to be stirred can be produced by the addition to the synthesis mixture of a small quantity e.g. 1000 ppm, of preformed ZSM-22 zeolite seed crystals.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: February 2, 1999
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Johannes Petrus Verduijn, Luc Roger Marc Martens
  • Patent number: 5814110
    Abstract: Distillate fuel is treated with additives whose structure match the crystal planes of the wax which crystallizes from the fuel to produce crystals below 4000 nanometres in size, suitable additive include novel sulpho-carboxylic materials particularly their esters and amine derivatives such as the amine salts and/or amides of ortho-sulpho benzoic acid.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: September 29, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Kenneth William Bartz, Jacqueline Dawn Bland, David Paul Gillingham, Richard Dix Kerwood, Edwin William Lehmann, Kenneth Lewtas, John Edward Maddox, Albert Rossi, Robert Dryden Tack
  • Patent number: 5789356
    Abstract: The present invention provides functional fluid compositions containing a major portion of oil of lubricating viscosity and a novel and synergistic combination of an acylated nitrogen-containing compound having an olefinic substituent averaging in carbon number from 20 to 60 and at least one ashless detergent/dispersant.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: August 4, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventor: George Mortimer Tiffany, III
  • Patent number: 5767046
    Abstract: A hydrocarbon composition functionalized via the Koch reaction which is the reaction product of at least one hydrocarbon having a number average molecular weight of less than 500 and at least one ethylenic double bond per molecule, with carbon monoxide and a nucleophilic trapping agent. The hydrocarbon is usefully functionalized and derivatized, producing, in particular, lubricants suitable for use in two-cycle engines.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: June 16, 1998
    Assignee: Exxon Chemical Company
    Inventors: Joseph V. Cusumano, William D. Diana, William B. Eckstrom, Jacob I. Emert, Keith R. Gorda, Michael J. Keenan, Richard H. Schlosberg
  • Patent number: 5756430
    Abstract: Mist oil lubricants are disclosed based on polycarboxylic acid esters as the base oil which have added 1 to 5% of polyisobutylene Mn 400-2500 as stray mist suppressants.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: May 26, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventor: James Zielinski
  • Patent number: 5743923
    Abstract: The low temperature properties of a blend of biofuel and petroleum-based fuel oil are improved by the addition of an ethylene-unsaturated ester copolymer, or a comb polymer, or a polar N compound, or a compound having at least one linear alkyl groups connected to a non-polymeric organic residue.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: April 28, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Brian William Davies, Kenneth Lewtas, Alessandro Lombardi
  • Patent number: 5739076
    Abstract: New titanium zeolite Beta catalysts which have been found to be useful as catalysts for the oxidation of organic compounds using organic hydroperoxides as oxidation catalysts. They are particularly useful as ring opening oxidation catalysts and may be used to produce adipic acid from cyclohexane.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: April 14, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Diane Renata Cornelia Huybrechts, Philip Luc Buskens, Georges Marie Karel Mathys, Luc Roger Marc Martens
  • Patent number: 5731486
    Abstract: A method for producing 3-methyl-2-pentene which is substantially free of any other C.sub.6 olefin, except 2-ethyl-1-butene, by first producing a stream that contains 2-ethyl-1-butene from the trimerization of ethylene, and second by recovering the 2-ethyl-1-butene as 3-methyl-2-pentene via etherification, separation of the ether, and decomposition of the ether back to predominantly 3-methyl-2-pentene with some 2-ethyl-1-butene.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: March 24, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Dan E. Hendriksen, Gerald G. McGlamery, Michael J. Keenan, Derrick D. Pete
  • Patent number: 5718734
    Abstract: Compositions comprising (a) an ethylene-mixed unsaturated ester copolymer or (b) two or more ethylene-unsaturated ester copolymers differing in their ester chains improve the low temperature properties of fuel oils.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: February 17, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Brian William Davies
  • Patent number: 5716915
    Abstract: Additives having certain hydrocarbyl groups improve the low temperature properties of hydrocarbon oils.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: February 10, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Gerald Ivan Brown, Lain More, Robert Dryden Tack, Brian William Davies, Derek A. Towe
  • Patent number: 5698747
    Abstract: Ethers, for example those produced by acid-catalyzed dehydration of alcohols, are freed from esters by treatment with an alkoxide, and are especially suitable as drilling fluid components.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: December 16, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Allen David Godwin, Georges Marie Karel Mathys
  • Patent number: 5674300
    Abstract: Wax crystal modifiers for fuel oils are derived from ethylene-alpha olefin polymers with terminal unsaturation, preferably obtained by polymerization in the presence of a metallocene catalyst, optionally together with other cold flow improvers.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: October 7, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Andrew Matthew McAleer, Gerald Peter Yearwood
  • Patent number: 5672800
    Abstract: In a process for the oligomerization of C.sub.2 -C.sub.12 -alkenes, an alkene-containing feedstock having a water content of from 0.05 to 0.25 molar %, based on the hydrocarbon content of the feedstock, is passed over a zeolite catalyst. Improved alkene conversion and catalyst life are obtained compared to processes in which non-hydrated feedstocks are used.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: September 30, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Georges Marie Karel Mathys, Luc Roger Marc Martens, Marleen Augusta Baes, Johannes Petrus Verduijn, Diane Renata Cornelia Huybrechts
  • Patent number: 5663388
    Abstract: A process for forming acids from aldehydes which comprises reacting an oxo aldehyde with water in the presence of an acid-forming catalyst and in the absence of hydrogen, and at a pressure of about 0.1 to 6.99 MPa and a temperature of about 93.degree. to 205.degree. C., thereby converting aldehyde to an oxo acid.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: September 2, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jose M. Vargas, Magdiel Agosto
  • Patent number: 5631330
    Abstract: Non liquid-crystalline esterphenol-capped liquid polymer and polyol compositions in combination with an amino crosslinking agent endow coating compositions containing them with the ability of providing films having superior properties. The esterphenol-capped polymers and polyols can be prepared by direct esterification of hydroxybenzoic acid without its decarboxylation.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 20, 1997
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Albert I. Yezrielev, William E. Wellman, Ralph M. Kowalik, George A. Knudsen, Michael G. Romanelli
  • Patent number: 5593466
    Abstract: Crude oils, lubricating oils or fuel oils have their flow point improved by adding to the crude oil, lubricating oil or fuel oil a minor proportion by weight of a polymer containing the repeating units: ##STR1## where x is an integer and y is 0 or an integer and wherein in the total polymer x+y is at least two.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: January 14, 1997
    Assignee: Exxon Chemical Patents Inc
    Inventors: Robert D. Tack, Kenneth Lewtas
  • Patent number: 5578091
    Abstract: Compounds of general formula (I) wherein X and Y are the same or different and are selected from the group consisting of SO.sub.3 (--), --CO--, --C(O)O(--), --R.sup.4 --C(O)O--, --NR.sup.3 C(O)--, --R.sup.4 O--, --R.sup.4 --C(O)O--, --R.sup.4 -- and --NC(O)--, R.sup.4 being --(CH.sub.2).sub.m -- where m is from 0 to 5 and R.sup.3 is defined below; X.sup.1 and Y.sup.1 are the same or different and are selected from the group consisting of (a), R.sup.1 and R.sup.2 being independently selected from the group consisting of alkyl, alkoxy alkyl or polyalkoxyalkyl groups that contain at least 10 carbon atoms in their main chain, and R.sup.3 being a hydrocarbyl group, each R.sup.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: November 26, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Graham Jackson, Rodger F. Andrews