Patents Represented by Attorney J. F. Hunt
  • Patent number: 4810574
    Abstract: An adhesive comprising a copolymer and a light color petroleum hydrocarbon resin including an aromatic hydrocarbon component useful for tackifying copolymers is described. The resin used has a softening point of about 0.degree. C. to about 40.degree. C., a number average molecular weight (Mn) of from 100 to 600 and a molecular weight distribution (Mw/Mn) of from 1:1 to about 1.3. Adhesives having outstanding properties result.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: March 7, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Mary E. Ahner
  • Patent number: 4770782
    Abstract: Elimination of gel/emulsion formation such as occurs during liquid-liquid extractions of elastomeric olefin polymers is accomplished by the introduction of a cationic polyelectrolyte into the extraction system. The removal of catalyst residues from a solution of elastomeric olefin polymers by means of aqueous extraction, which can be accompanied by gel/emulsion formation, is facilitated by the presence of a cationic polyelectrolyte such as melamine-formaldehyde resin cationic colloids whereby a useful polymer product is obtained.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: September 13, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Joyce M. Wilkins, David E. Breslin
  • Patent number: 4769261
    Abstract: A seal layer for use in large institutional-sized retort pouches comprises an ABA film structure wherein the A layers are each composed of a blend of a minor amount of an elastomer and a major amount of a polyolefin, and the B layer is composed of a blend of a major amount of an elastomer and a minor amount of a polyolefin. Retort pouches made with this ABA film structure as the seal layer exhibits improved impact strength.
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: September 6, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Donald R. Hazelton, Lawrence K. Locke
  • Patent number: 4769279
    Abstract: Low viscosity ethylene acrylic copolymers and blends thereof with other fiber-forming polymers for spunbond and melt blown nonwoven applications. Ethylene/alkyl (meth) acrylate, especially ethylene/methyl acrylate copolymers are found to be suitable for fiber-forming operations, especially melt blowing when the melt index is at least about 10. Blends of the copolymer with other fiber-forming polymers are especially suitable for fiber-forming operations. The nonwoven products of the copolymers and blends of the invention show a good degree of elongation making them especially suitable for certain fabric applications and new uses. The nonwoven fabrics are comprised of fibers of the copolymers and blends, having a diameter of about 1-40 microns. Larger fibers may also be formed by various techniques.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: September 6, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Blair A. Graham
  • Patent number: 4767485
    Abstract: Extrusion coating with high line speeds of up to 600 mpm may be achieved without sacrificing the adhesion of the coating to the substrate by using an ethylene copolymer with up to 3% by weight copolymer, preferably 0.5 to 2.5% by weight VA, as the coating polymer. The extrusion temperature is in the region of incipient degradation, but maintained below the level which gives undesired degradation leading to odor or discoloration.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: August 30, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventor: Dirk J. M. Michiels
  • Patent number: 4766100
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, an oxygen-containing compound, an acyl halide, titanium tetrachloride and Cl.sub.2, Br.sub.2 or an interhalogen compound and treating the solids with an organometallic compound of a Group IIa, IIb or IIIa metal.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: August 23, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Steven A. Best, Bradley P. Etherton, Malcolm J. Kaus
  • Patent number: 4766169
    Abstract: Petroleum resins having a softening point from 10.degree. C. to 80.degree. C. obtained from C.sub.5 olefines and diolefines and one or more monovinyl aromatic compounds contain from 10 to 30 wt. % of the aromatic are useful as tackifiers in a combination with carboxylated styrene butadiene copolymer to produce aqueous based pressure sensitive adhesives.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: August 23, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Andre Lepert, Morris L. Evans, Lutz E. Jacob
  • Patent number: 4762797
    Abstract: A method for easily and quickly determining the tendency of a petroleum fraction (oil or resid) to foul in refinery equipment comprises determining the ratio of the saturates or aromatics (polar, neutral or total): asphaltenes for the petroleum in question and comparing this ratio with a plot of ratios and fouling tendencies for a set of prior oils or resids. It has been found that the ratio and the relationship to fouling are completely consistent and reproducible phenomenon which thereby provide a rapid means for a substantially quantitative measure of fouling tendency.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: August 9, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Patent number: 4757114
    Abstract: Petroleum Resins particularly effective for use as tackifiers for hot melt adhesives and in tackifiers for solvent-based pressure sensitive adhesives are prepared by a processWherein (1) a C.sub.8 - and/or C.sub.9 aromatic unsaturated hydrocarbon-containing feed (optionally containing up to 18 wt. % or C.sub.4 or C.sub.5 unsaturated aliphatic hydrocarbons) is first polymerized completely and thereafter a C.sub.5 -aliphatic unsaturated hydrocarbon-containing feed is added, polymerization continued and the reactor effluent stripped to obtain the resin. The order of polymerization may be reversed.
    Type: Grant
    Filed: November 19, 1985
    Date of Patent: July 12, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Chiaki Tochinai, Tadanao Kohara, Sadayoshi Budo, Hiroaki Masuda, Takayoshi Yoshida
  • Patent number: 4752587
    Abstract: A method for determining the fouling tendency of an asphaltene containing petroleum stream such as crude oil by the use of thin layer chromatography. The chromatogram of a crude oil formed in the presence of an asphaltene antisolvent which exhibits a fouling tendency developed a distinct, dark ring or disk.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: June 21, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Patent number: 4751187
    Abstract: A method for determining the fouling tendency of an asphaltene containing hydrocarbon stream such as crude oil by the use of thin layer chromatography. The chromatogram of a crude oil exhibiting a fouling tendency developed a distinct, dark ring or disk.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: June 14, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Patent number: 4749757
    Abstract: A suspending agent system, a polymerizable reaction mixture, and a polymerization reaction process for producing high bulk density resin on a consistent basis by incorporating in the reaction mixture prior to initiation of the reaction about 1-250 parts per million by weight of polymerization inhibitor and also including about 0.001-0.1 parts by weight based on the weight of VCM of a highly hydrolyzed PVA. Preferred PVA's have a 4 weight percent aqueous solution viscosity of 30-100 centipoise and an effective polymerization inhibitor is diethylhydroxylamine. Bulk densities may be increased from about 3-10% depending upon the size of the reaction and the particular ingredients chosen.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: June 7, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Calvin K. Schram, Joseph Serratore, James R. Wallace
  • Patent number: 4743494
    Abstract: A process for producing a hydrophilic polyolefin nonwoven fabric which comprises treating with a plasma a nonwoven fabric composed of fibers of a polyolefin containing more than 0.1 parts by weight of hindered amine compound for 100 parts by weight of polyolefin.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: May 10, 1988
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Masato Komatsu, Kiyotada Narukawa, Noboru Yamamoto
  • Patent number: 4738897
    Abstract: A solid polymeric body comprising a polymer matrix containing a water-soluble reagent leachable into a fluid containing condensed water, said matrix being reagent permeative and insoluble in said fluid containing condensed water and the said body preferably having a softening point substantially above that of the temperature of the fluid environment in which it is to be employed is useful for the introduction of an additive reagent into said fluid particularly when said fluid is located in a subterranean formation.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: April 19, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Lee A. McDougall, John C. Newlove, John A. Haslegrave
  • Patent number: 4737265
    Abstract: Oil is dehydrated and/or desalted by the influence of a dewatering and desalting formulation which can be characterized as an admixture of (i) a demulsifier preferably an alkylene oxide alkyl phenol-formaldehyde condensate such as a poly ethoxylated nonylphenolformaldehyde condensate and (ii) a deoiler which is usefully a polyol such as ethylene glycol or poly (ethylene glycol) of Mw ranging from 106 to 44,000 and preferably ethylene glycol.The aqueous formulation may usefully contain a cosolvent such as isopropanol.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: April 12, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Philip Merchant, Jr., Sylvia M. Lacy
  • Patent number: 4728683
    Abstract: Ethylene-vinyl acetate copolymers having a melt index of 700-10,000 and a vinyl acetate content of from 1-40% by weight (based on the copolymer) are used as components of bitumenous binder compositions for the surface dressing of roads to improve the temperature range of their operability, the particular EVA's are also found to have good compatibility with the types of bitumen used.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: March 1, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jozef A. F. Smits, Marc P. Plaindoux
  • Patent number: 4714749
    Abstract: This invention relates to pressure sensitive adhesive formulations which include a saturated midblock thermoplastic elastomer such as a block copolymer of polystyrene and hydrogenated polydiene such as Kraton.RTM. G and a fully saturated tackifying resin derived from petroleum feedstock polymerized in the presence of aluminum chloride and having a Mn ranging from 400 to 800, a softening point of 40.degree. to 70.degree. C. and a glass transition temperature less than 45.degree. C. whereby the adhesive formulations have a rolling ball tack of less than 10 cm., a 180.degree. peel of from 1 to 4 pounds per inch, a 90.degree. quick stick of from 0.5 to 2.0 pounds per inch and a Polyken probe tack of higher than 400 g/cm.sup.2 with a formulation containing 100 to 180 phr of the saturated tackifying resin.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: December 22, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventors: Vincent L. Hughes, Ralph W. Looney
  • Patent number: 4707530
    Abstract: Ethylene is homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting together a porous particulate material, an organic magnesium compound, a halogen or interhalogen compound and titanium tetrachloride.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: November 17, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventor: Burnett H. Johnson
  • Patent number: 4701506
    Abstract: Ethylene and alpha-olefins are homopolymerized or copolymerized with another olefin monomer in the presence of a catalyst system comprising an organo metal cocatalyst and a titanium-containing catalyst component, said titanium-containing catalyst component being obtained by reacting in the presence of a porous particulate material, a halogen, an organic magnesium compound, an oxygen-containing compound, titanium tetrachloride and treating the solids with an organometallic compound of a Group IIa, IIb or IIIa metal.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: October 20, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Agapios K. Agapiou, Michael E. Muhle, Myron B. Kurtzman
  • Patent number: 4698450
    Abstract: Synthetic polyethylene wax having low molecular weight of 250 to 3000 and a density of 0.930 to 0.950 is prepared in a high pressure process at pressures of at least 800 bar using a carbonyl compound such as acetaldehyde as chain transfer agent. The resulting wax with incorporated CO has good compatibility in hot melt systems, and may be stripped to remove light ends, increase density and crystallinity and improve thermal stability.
    Type: Grant
    Filed: January 15, 1985
    Date of Patent: October 6, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventors: Hugo J. C. Nuttens, Gerard VanHaeren