Patents Represented by Attorney, Agent or Law Firm John F. Hunt
  • Patent number: 6177387
    Abstract: A synthetic ester composition exhibiting low odor, and high thermal and oxidative stability which comprises the reaction product of: (a) a polyol which comprises at least dipentaerythritol, e.g., technical grade pentaerythritol and mixtures of technical grade pentaerythritol or dipentaerythritol and monopentaerythritol; and (b) a mixture of monocarboxylic acids comprising at least one linear acid selected from the group consisting of between C5-C10 acids and at least one branched acid selected from the group consisting of C7-C9 acids, wherein the amount of C5 and C6 acids is between about 20 to 45 weight %, based upon the total amount of said mixture of monocarboxylic acids, and wherein said synthetic ester composition has a viscosity of at least 4 cSt at 99° C., a viscosity of less than about 8,000 cSt at 40° C., and a pour point of at least as low as −54° C.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: January 23, 2001
    Assignee: Exxon Chemical Patents Inc
    Inventors: Richard Henry Schlosberg, Carolyn Boggus Duncan, David Wayne Turner, Thomas Lee Ashcraft, Jr., William Joseph Munley, Jr.
  • Patent number: 5922920
    Abstract: A method is provided for preparing organic hydroperoxides by oxidizing aryl alkyl hydrocarbons having a benzylic hydrogen with an oxygen containing gas using as a catalyst an oxo (hydroxo) bridged tetranuclear metal complex having a mixed metal core, one metal of the core being a divalent metal selected from Zn, Cu Fe, Co, Ni, Mn or mixtures thereof and another metal being a trivalent metal selected from In, Fe, Mn, Ga, and Al.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: July 13, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jeffrey Evans Bond, Sergiu Mircea Gorun, George William Schriver, Robert Timothy Stibrany, Thomas Henry Vanderspurt, Grayson Hall Via, Baoshan Zhang, Jihad Mohammed Dakka
  • Patent number: 5877358
    Abstract: In the process of hydrogenating a crude aldehyde product formed from the oxo process into a crude alcohol product, which process includes: feeding the crude aldehyde product into a first reactor which contains a hydrogenation catalyst, thereby forming a first hydrogenated product; feeding the first hydrogenated product from the first reactor through at least one intermediate reactor, each intermediate reactor being connected in series and containing a hydrogenation catalyst, thereby forming at least one intermediate hydrogenated product; and feeding the intermediate hydrogenated product from a last intermediate reactor to a final reactor which contains a hydrogenation catalyst, thereby forming the crude alcohol product; the improvement including a step wherein: at least a portion of the first hydrogenated product is recycled to the first hydrogenation reactor; or at least a portion of the intermediate hydrogenated product is recycled to the first hydrogenation reactor or an intermediate reactor upstream of th
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: March 2, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Ronald D. Garton, Donald Q. Brown, Magdiel Agosto
  • Patent number: 5874661
    Abstract: The average degree of branching of a branched olefin feedstock is reduced by skeletal isomerization in contact with a molecular sieve.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: February 23, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Wim Herman Verrelst, Luc Roger Marc Martens, Georges Marie Karel Mathys
  • 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: 5866626
    Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate; (b) a polyol; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate and the polyol; and (d) a blowing agent comprised at least partially from a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: February 2, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu
  • Patent number: 5847018
    Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate; (b) a polyol; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate and the polyol; and (d) a blowing agent comprised at least partially from a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: December 8, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu
  • Patent number: 5817722
    Abstract: Polyesterdiols having low viscosities of less than 3500 cps, high content of non-volatile matter in excess of 96 wt %, and narrow molecular weight distribution of less than about 1.4 are prepared by esterification of one or more aliphatic dicarboxylic acids or ester derivatives thereof using at least a 1.5 molar excess of one or more aliphatic diols until an acid number of less than 20 is achieved, and stripping excess diol from the polyesterdiol reaction product. Where esterification catalyst is used, catalyst is substantially removed prior to stripping excess unreacted diol from polyesterdiol reaction product. The polyesterdiols so produced are useful as (i) curable components in thermosettable resin compositions, particularly compositions essentially free of volatile organic solvent and also containing a crosslinking agent and a reactive hardening agent: and/or (ii) useful as coatings, paints and adhesives, providing coatings with very low content of volatile organic compounds.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: October 6, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Albert Ilya Yezrielev, Konstantinos R. Rigopoulos, Richard William Ryan, Karen K. Kuo, George Andrew Knudsen
  • Patent number: 5817607
    Abstract: A biodegradable lubricant which is prepared from: about 60-99% by weight of at least one biodegradable synthetic ester base stock which comprises the reaction product of: a branched or linear alcohol having the general formula R(OH).sub.n, wherein R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms and n is at least 2; and mixed acids comprising about 30 to 80 molar % of a linear acid having a carbon number in the range between about C.sub.5 to C.sub.12, and about 20 to 70 molar % of at least one branched acid having a carbon number number in the range between about C.sub.5 to C.sub.13 ; wherein the ester base stock exhibits the following properties: at least 60% biodegradation in 28 days as measured by the Modified Sturm test; a pour point of less than -25.degree. C; and a viscosity of less than 7500 cps at -25.degree. C; about 1 to 20% by weight lubricant additive package; and about 0 to 20% of a solvent.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: October 6, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Carolyn B. Duncan, Leah K. Meade
  • Patent number: 5798319
    Abstract: A lubricant which is prepared from at least one synthetic ester composition exhibiting thermal and oxidative stability which comprises the reaction product of 3,5,5-trimethyl-1-hexanol and an acid or anhydride; and a lubricant additive package; whereby the incorporation of an antioxidant in the lubricant additive package for the purpose of maintaining oxidative and thermal stability of the crankcase lubricating oil formulation to at least 20 minutes as measured by HPDSC at 220.degree. C., 3.445 MPa air and 0.5 wt. % dioctyl diphenyl amine can be either reduced or eliminated. The synthetic ester composition preferably exhibits the following additional properties: a metals content of 10 ppm or less metals based on the total synthetic ester composition, an ash content of 15 ppm or less ash based on the total synthetic ester composition, a total acid number of 0.05 mg KOH/g or less, and a volume resistivity of at least about 1.times.10.sup.11 ohm cm.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: August 25, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard Henry Schlosberg, David Wayne Turner, Martin Anthony Krevalis, William Joseph Munley, Jr., Haven Scott Aldrich
  • Patent number: 5783168
    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: October 16, 1996
    Date of Patent: July 21, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Johannes Petrus Verduijn, Luc Roger Marc Martens
  • Patent number: 5780556
    Abstract: The present invention provides an amino curable polyester oligomer composition having low viscosity and a narrow molecular weight distribution comprising one or a mixture of oligomers (a) and (b): ##STR1## wherein R is the residue of at least one aliphatic, cycloaliphatic or mixed aliphatic/aromatic polycarboxylic-acid having from 2 to about 20 carbon atoms, R.sub.1 is the residue of at least one aliphatic, cycloaliphatic or mixed aliphatic/cycloaliphatic polyol having from 2 to about 20 carbon atoms, A is a radical of the formula: ##STR2## B is a radical of the formula: ##STR3## wherein R.sub.4 is H, OH, halogen or an organic radical containing 1 to 4 carbon atoms, R.sub.5 is a direct bond or an organic radical containing 1 to 20 carbon atoms and R.sub.6 is an organic radical containing 2 to 20 carbon atoms, n is a number averaging from greater than 0 up to less than 2 and p is a number averaging from about 0.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 14, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Albert Ilya Yezrielev, Konstantinos R. Rigopoulos, Vijay Swarup
  • Patent number: 5763678
    Abstract: An exothermic chemical reaction, for example, hydroformylation, is carried out in a series of loop reactors. Fresh reactant feed is supplied not only to the first reactor in the series but also to the second reactor, thereby achieving improved overall throughput while maintaining a stable temperature in at least the first reactor.
    Type: Grant
    Filed: May 1, 1996
    Date of Patent: June 9, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventors: Hubertus Jozeph Beckers, Jan Martin De Rijke, Ronald Dean Garton
  • Patent number: 5759941
    Abstract: A process for making a catalyst product which comprises reacting dialkyltin oxide with an alcohol and the corresponding alkyl carbamate at a temperature in the range between about 160 to 190.degree. C. and at an autogenous pressure, wherein the catalyst product comprises dialkyltin dialkoxide in the range between about 50 to 100 mole % based on the tin species of the catalyst product.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: June 2, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventor: Ramzi Yanni Saleh
  • Patent number: 5750750
    Abstract: A complex alcohol ester which comprises the reaction product of an add mixture of the following: a polyhydroxyl compound represented by the general formula:R(OH).sub.nwherein R is any aliphatic or cyclo-aliphatic hydrocarbyl group and n is at least 2, provided that the hydrocarbyl group contains from about 2 to 20 carbon atoms; a polybasic acid or an anhydride of a polybasic acid, provided that the ratio of equivalents of the polybasic acid to equivalents of alcohol from the polyhydroxyl compound is in the range between about 1.6:1 to 2:1; and a monohydric alcohol, provided that the ratio of equivalents of the monohydric alcohol to equivalents of the polybasic acid is in the range between about 0.84:1 to 1.2:1; wherein the complex alcohol ester exhibits a pour point of less than or equal to -20.degree. C., a viscosity in the range between about 100-700 cSt at 40.degree. C. and having a polybasic acid ester concentration of less than or equal to 70 wt. %, based on the complex alcohol ester.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: May 12, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Carolyn Boggus Duncan, Paul R. Geissler, David Wayne Turner, William Joseph Munley, Jr., Martin A. Krevalis
  • 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: 5730844
    Abstract: A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature of about 130.degree. C.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: March 24, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: James J. Baiel, Larry O. Jones
  • Patent number: 5731443
    Abstract: A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature in the range of about 130.degree. C. or greater with a first stream comprising maleic anhydride and/or at least one compound selected from the group consisting of: citraconic anhydride, benzoic acid and phthalic anhydride in a rectification tower such that a substantial portion of the phthalic anhydride contained within the vapor phase oxidation product transfers from the vapor phase to a liquid phase and the by-products contained in the first stream which are more volatile than phthalic anhydride transfer from the liquid phase to the vapor phase and wherein a vapor-to-liquid weight ratio in the range between about 5 to 20 is exhibited within the rectification tower, thereby forming a liquid phase phthalic anhydride product having a phthalic anhydride concentration in the range between about 50-100 wt. %, preferably 90-100 wt.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: March 24, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Herbert Peter Dengler, James Joseph Baiel
  • Patent number: 5718808
    Abstract: A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature of about 130.degree. C. or greater with a first stream comprising a solvent having a boiling point in the range between about 150.degree. to 350.degree. C. and a freezing point of less than 40.degree. C.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: February 17, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: James J. Baiel, Larry O. Jones, Ralph D. Gray, Jr., Magdiel Agosto