Patents Assigned to Exxon Chemicals Patents Inc
  • Heterogeneous lewis acid-type catalysts
    Patent number: 5874380
    Abstract: A solid state insoluble salt catalyst system for the carbocationic polymerization of olefin monomer in the presence of a polar or non-polar reaction medium, which comprises (a) solid state catalyst component comprising at least one salt of a strong acid and a carbocationically active transition metal selected from Groups III A, IV A, V A and VI A of the Periodic Table of Elements, wherein said salt is insoluble in the reaction medium; and (b) cocatalyst component effective for promoting the carbocationic polymerization.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: February 23, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Frank Joung-Yei Chen, Herve Cheradame, Jon Edmond Stanat, Gerard Rissoan
  • Hydrocarbon treatment
    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
  • Polyolefin-substituted amines grafted with poly(aromatic-n-monomers) for olegaginous compositions
    Patent number: 5871554
    Abstract: Novel polymers comprising polyolefin-substituted amines grafted with aromatic N-containing monomers such as aniline, have been found to provide oil soluble polymers having dispersant and antioxidant properties in oleaginous compositions, including fuel and lubricating oils. The polymers of this invention are further useful in electrical applications. These materials are formed by a process which comprises: (a) contacting an amine compound having at least two reactive nitrogen moieties with at least one long chain hydrocarbon-substituted reactant in an amount and under conditions sufficient to form a N-containing polymer adduct containing reactive amine groups, and (b) contacting the N-containing polymer adduct with at least one aromatic N-containing monomer under polymerization conditions to graft said N-containing polymer adduct with aromatic N-containing polymer segments.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: February 16, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Abhimanyu Onkar Patil, Robert Dean Lundberg, Antonio Gutierrez
  • Method for increasing the static coefficient of friction in oleaginous compositions
    Patent number: 5872082
    Abstract: A method of increasing the static coefficient of friction of an oleaginous composition, such as an ATF, comprising adding to a major portion of an oil of lubricating viscosity a friction increasing amount of an oil soluble friction increasing reaction product comprising (a) an oil soluble substituted or unsubstituted, saturated or unsaturated, branched hydrocarbyl group containing from about 12 to about 50 total carbon atoms, (b) a linking group, and (c) a nitrogen-containing polar group, wherein the polar group contains at least one nitrogen atom and, optionally, contains at least one atom selected from the group consisting of boron, oxygen and sulfur atoms, and wherein the polar group is linked to the branched hydrocarbyl group through the linking group.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: February 16, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Raymond Frederick Watts, Ricardo Alfredo Bloch, Antonio Gutierrez, Roger Keith Nibert, Jack Ryer
  • Dispersants derived from heavy polyamine and second amine
    Patent number: 5872084
    Abstract: A Koch functionalized product, which is the reaction product of at least one hydrocarbon with carbon monoxide and a nucleophilic trapping agent, is derivatized with a heavy polyamine and a second amine. The hydrocarbon is a hydrocarbon compound or a hydrocarbon polymer. A heavy polyamine is a mixture of polyamines containing small amounts of lower polyamine oligomers such as tetraethylene pentamine and pentaethylenehexamine and containing primarily oligomers with more than 6 nitrogens and more extensive branching. Rubber seals embrittlement is reduced or minimized.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: February 16, 1999
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Jacob I. Emert, Joseph V. Cusumano, David C. Dankworth, William D. Diana, William B. Eckstrom, Keith R. Gorda, Antonio Gutierrez, Jon E. Stanat, Warren A. Thaler, Stephen Zushma
  • Method for recovering phthalic anhydride/maleic anhydride mixtures by distillation
    Patent number: 5869700
    Abstract: A process for recovering phthalic anhydride and maleic anhydride from a maleic anhydride-rich vapor phase oxidation product comprising the step of: contacting the vapor phase oxidation product with: (i) at least one by-product stream having a freezing point which is lower than the freezing point of pure phthalic anhydride; and/or (ii) 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.; wherein a vapor-to-liquid weight ratio in the range between about 2 to 20 is exhibited within the contacting means, thereby forming a liquid phase phthalic anhydride product having a phthalic anhydride concentration in the range between about 50-100 wt. % and a first vapor stream.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: February 9, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Larry O. Jones, James J. Baiel
  • Method of producing rigid foams and products produced therefrom
    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
  • Automatic transmission fluids of improved viscometric properties
    Patent number: 5866519
    Abstract: This invention provides a composition and method for producing partial synthetic automatic transmission fluids having improved shear-stability and low temperature properties without the need to incorporate polymeric viscosity modifiers.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: February 2, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Raymond Frederick Watts, Ricardo Alfredo Bloch
  • ZSM-22 zeolite
    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
  • Sulfur and thiol removal from reactive hydrocarbons
    Patent number: 5866749
    Abstract: Sulfur and mercaptans in reactive hydrocarbon streams are removed by contacting the hydrocarbons at mild temperatures with a hydrogen reduced metal oxide such as a hydrogen reduced copper, zinc and/or aluminum oxide.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: February 2, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Di-Yi (John) Ou
  • Copolymers of ethylene and germinally disubstituted olefins
    Patent number: 5866665
    Abstract: Substantially random ethylene copolymers containing at least 3.0 mole percent of geminally disubstituted olefin monomers are described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and R.sub.3 and R.sub.4 are, independently, essentially linear hydrocarbyl groups having from 1 to 30 carbon atoms, or more, and containing one carbon atom bound directly to R.sub.2. The copolymers can be prepared by coordination polymerization by means of contacting at least one geminally disubstituted olefin monomer and ethylene, optionally with one or more other coordination polymerizable monomers, with a catalyst system comprising a monocyclopentadienyl, heteroatom-containing Group 4 transition metal catalyst component.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: February 2, 1999
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Timothy Daniel Shaffer, Jo Ann Marie Canich, Kevin Richard Squire
  • Fuel economy additive and lubricant composition containing same
    Patent number: 5863873
    Abstract: A lubricant composition capable of improving the fuel economy of an internal combustion engine and comprising a base oil as a major component and from about 2 to about 15 wt. %, based on the weight of composition, of a fuel economy improving additive having a viscosity greater than the viscosity of the bulk lubricant and being selected such that the lubricant is characterized by (1) a positive deviation from that of a theoretical line when the elastohydrodynamic (EHD) film thickness thereof is plotted against entrainment speed on a log basis, and by (2) a traction coefficient under both hydrodynamic and mixed lubrication conditions which is lower than it would have been if the fuel economy improving additive were not present in the lubricant is disclosed.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: January 26, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventor: Charles Herbert Bovington
  • Micro particles
    Patent number: 5863516
    Abstract: The present invention relates to colloidal suspensions of discrete particles of colloidal zeolite and a method for preparing such zeolite from clear tetraalkylammonium stabilized aluminiumsilicate solutions. Smaller amounts of well defined and controlled metal hydroxide solutions are added to these alumiumsilicate solutions to enable the synthesis of a specific zeolite as well as to control zeolite yield. The colloidal suspensions are characterized by an average particle size of less than 250 nanometers and preferably, less than 200 nanometers together with the fact that the particle size distribution expressed as the geometric standard deviation is less than 1.30 and preferably less than 1.20. Zeolite sols synthesized according to this invention display Tyndall light scattering typical for colloidal suspensions as well as a very low rate of sedimentation due to the small particle size.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: January 26, 1999
    Assignee: Exxon Chemical Patent Inc.
    Inventors: Jan-Erik Otterstedt, Per Johan Sterte, Brian J. Schoeman
  • Polymerization catalyst systems, their production and use
    Patent number: 5863853
    Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst system of the invention provides for a supported bulky ligand transition metal catalyst system which when utilized in a polymerization process substantially reduces the reactor fouling and sheeting particularly in a gas phase polymerization process.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: January 26, 1999
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: George Alan Vaughan, Anthony Nicholas Speca, Patrick Brant, Jo Ann Marie Canich
  • Metal carboxylates
    Patent number: 5861523
    Abstract: Basic zirconium carboxylates of branched chain aliphatic monocarboxylic acids having 5 to 10 carbon atoms are disclosed. The carboxylates may be used, inter alia, as driers for paints and inks.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: January 19, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Sylvain Leontina Edmond Reyniers, Karen S'Jegers
  • Dilute process for the polymerization of non-ethylene .alpha.-olefin homopolymers and copolymers using metallocene catalyst systems
    Patent number: 5859159
    Abstract: An improved process for the homopolymerization and copolymerization of .alpha.-olefins utilizing highly dilute .alpha.-olefin feedstreams to effect high conversions and catalyst efficiencies in the production of non-ethylene copolymers. The instant invention is particularly adaptable to polymerizing the .alpha.-olefin content of commercially available refinery feedstreams such as Raffinate-2.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: January 12, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Albert Rossi, Salvatore Rea, Jon E. Stanat, Linda K. Wright, Kenneth L. Kaufman, Jeffrey W. Frederick, Robert Martin Koros, Harold Wilbur Margo
  • Fuel oil compositions
    Patent number: 5858028
    Abstract: The lubricity of low sulphur fuels is enhanced by incorporation of a lubricity enhancing additive in combination with an ethylene-unsaturated ester copolymer.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: January 12, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Brian William Davies, Rinaldo Caprotti, Brid Dilworth
  • Automatic transmission fluids with improved transmission performance
    Patent number: 5858935
    Abstract: Power transmitting fluids, especially automatic transmission fluids, possess improved properties such as antiwear, durability, antioxidation, and shift-time performance by incorporation of high viscosity polyalphaolefins.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: January 12, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventors: Raymond F. Watts, Manoj Tandon
  • Zeolite L preparation
    Patent number: 5855863
    Abstract: Binderless particles of zeolite L of very high mechanical strength are prepared by a process which comprises forming a mixture by reacting substantially binderless particles of zeolite L, preferably as shaped particles such as extrudates, with an aqueous alkaline solution containing sources of alkali metal, at least 50 mole % of which is potassium, and aluminium to obtain the desired particles of very high mechanical strength. The zeolite L thus obtained can form part of a dehydrocyclisation and/or isomerisation catalyst.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 5, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Johannes Petrus Verduijn
  • Lubricating oil dispersants derived from heavy polyamine
    Patent number: 5854186
    Abstract: A Koch functionalized product, which is the reaction product of at least one hydrocarbon with carbon monoxide and a nucleophilic trapping agent is derivatized with a heavy polyamine. A heavy polyamine is a mixture of polyamines comprising small amounts of lower polyamine oligomers such as tetraethylene pentamine and pentahexamine but primarily oligomers with more than 6 nitrogens and more extensive branching.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: December 29, 1998
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Joseph V. Cusumano, David C. Dankworth, William D. Diana, William B. Eckstrom, Jacob I. Emert, Keith R. Gorda, Antonio Gutierrez, Jon E. Stanat, Warren A. Thaler, Stephen Zushma