Patents Represented by Attorney J. F. Hunt
  • Patent number: 4931164
    Abstract: Low temperature asphaltene fouling is inhibited in highly paraffinic crude oil, liquified hydrocarbon gases (e.g. LPG, condensates) and blends thereof by the incorporation of an inhibiting amount of an oil soluble overbased magnesium sulfonate.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: June 5, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Patent number: 4921749
    Abstract: A film having superior seal strength and barrier properties comprises a base layer comprising 70 to 97 weight % of a polyolefin, e.g. polypropylene, and 3 to 30% weight of a resin of lower molecular weight than the polyolefin, e.g. a hydrogenated petroleum resin. On at least one of the surfaces of the base layer is a 1 to 20 weight % of a film of a random copolymer of 80 to 99 weight % of propylene and 1 to 20 weight % of ethylene, for example, an isotactic propylene-ethylene copolymer.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: May 1, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Bernard L. L. Bossaert, Stefan B. Ohlsson, William F. M. J. Willems
  • Patent number: 4918123
    Abstract: High solids content, high molecular weight hydrophobe-containing cationic polymer products are prepared by an inverse (water-in-oil) emulsion process wherein the hydrophobic monomer is in the water phase. The resultant polymers have increased activity in oily water clean-up.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: April 17, 1990
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Henry W. Yang, Thomas J. Pacansky
  • Patent number: 4918112
    Abstract: An adhesive foam comprises a foamed mixture of a foamable homo- or co-polymer and a foamable olefin-unsaturated carboxylic acid copolymer, the mixture containing at least 3 weight percent of polymer units derived from the acid.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: April 17, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Guillaume J. Roox
  • Patent number: 4916192
    Abstract: A light color hydrogenated aliphatic hydrocarbon petroleum resin including a piperylene component and a chain transfer agent component useful as a tackifying agent, especially with copolymers. The resin of the invention has a softening point of about 0.degree.-40.degree. C., a number average molecular weight of from 100 to about 900, a low Gardner color of about 3 or less, and is formed by the aluminum chloride catalyzed polymerization of a feed stream essentially free of butadiene.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: April 10, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Steven G. Hentges
  • Patent number: 4902766
    Abstract: A light color aliphatic hydrocarbon petroleum resin including a piperylene component and a chain transfer agent component useful as a tackifying agent, especially with copolymers. The resin of the invention has a softening point of about 0.degree.-40.degree. C., a number average molecular weight of from 100 to about 900, a low Gardner color of about 3 or less, and is formed by the aluminum chloride catalyzed polymerization of a feed stream essentially free of butadiene.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: February 20, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Steven G. Hentges
  • Patent number: 4892905
    Abstract: Petroleum resins having a softening point from 10.degree. C. to 80.degree. C. obtained from C.sub.5 olefins and diolefines and one or more monovinyl aromatic compounds which contain from 10 to 30 wt. % of the aromatic are useful as tackifiers for carboxylated styrene butadiene copolymer to produce pressure sensitive additives especially aqueous based adhesive when the resin is in the form of an emulsion which is also claimed.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: January 9, 1990
    Assignee: Exxon Research & Engineering Company
    Inventors: Andre Lepert, Morris L. Evans, Lutz E. Jacob
  • Patent number: 4888391
    Abstract: A polyolefin composition of ethylene, propylene, or copolymers thereof having good paint retention and improved flexural modulus is described. The properties result from incorporation into said polyolefin of a discontinuous phase made up of an ethylene/lower alkyl (meth)acrylate/(meth)acrylic acid terpolymer. This composition is particularly useful for molding paintable auto parts.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: December 19, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Joseph D. Domine, Anton J. Buchner
  • Patent number: 4874447
    Abstract: A nonwoven web is prepared from a polymeric blend comprising at least one elastomer and at least one thermoplastic resin. The nonwoven web comprises fibers produced by melt blowing the polymeric blend. Conventional techniques are used to accomplish the melt blowing but due to high viscosity of certain elastomers it is frequently necessary to degrade the polymer blend priior to melt blowing. The nonwoven web exhibits improved extensibility, texture and hand.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: October 17, 1989
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Donald R. Hazelton, William J. Hodgson, Jr.
  • Patent number: 4866144
    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 aluminum alkyl.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: September 12, 1989
    Assignee: Exxon Research & Engineering Company
    Inventors: Steven A. Best, Bradley P. Etherton, Malcolm J. Kaus
  • Patent number: 4855382
    Abstract: A hot melt adhesive contains a copolymer of at least 50 wt. % ethylene containing hydroxyl functionality having a melt viscosity of from 1 to 100 Pa.s at 180.degree. C., an internally blocked polyisocyanate and a viscosity reducing agent such as a tackifier.
    Type: Grant
    Filed: August 3, 1988
    Date of Patent: August 8, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Gerard M. Vanhaeren
  • Patent number: 4853432
    Abstract: An adhesive comprising a copolymer and an optionally hydrogenated light color petroleum hydrocarbon resin including an aromatic hydrocarbon component useful for tackifying block copolymers is described which has a softening point of about 0.degree. C. to about 40.degree. C., a number average molecular weight (Mn) of from 350 to 600 and a molecular weight distribution (Mw/Mn) of from 1:1 to about 2.0.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: August 1, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Mary E. Ahner
  • Patent number: 4851489
    Abstract: Generally, linear polyethylene containing long chain branching is obtained by polymerizing ethylene in the presence of a catalyst comprising a transition metal compound such as titanium chloride, an organoaluminum compound represented by the formula R.sub.1 R.sub.2 AlR.sub.p wherein R.sub.1 and R.sub.2 are the same or different hydrocarbyl groups having from 1 to 18 carbon atoms and R.sub.p is a polymeric hydrocarbyl group containing long chain branching aluminum alkyl cocatalyst.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: July 25, 1989
    Assignee: Exxon Research & Engineering Company
    Inventor: Dennis B. Malpass
  • Patent number: 4848564
    Abstract: A film for use as a rubber bale wrap includes a thermoplastic containing a release agent and having a microembossed surface to provide the film with a gloss of 10 or less.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: July 18, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Andor Scheller, Gerald A. Le Grange, Norman E. Luker
  • Patent number: 4849483
    Abstract: A process for producing a catalyst component for polymerization of olefins which comprises contacting (a) a metal oxide with (b) a magnesium alkoxide, contacting the resulting contact product with (c) a halogen-containing compound, and finally contacting the resulting contact product with (d) a titanium compound.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: July 18, 1989
    Assignee: Toa Nenryo Kogyo K.K.
    Inventors: Mamoru Tachikawa, Masato Sakuma, Satoshi Ueki, Chihiro Imai, Tokuo Makishima
  • Patent number: 4845182
    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: February 4, 1988
    Date of Patent: July 4, 1989
    Assignee: Exxon Research & Engineering Company
    Inventors: Chiaki Tochinai, Tadanao Kohara, Sadayoshi Budo, Hiroaki Masuda, Takayoshi Yoshida
  • Patent number: 4839422
    Abstract: An adhesive composition which contains a thermoplastic elastomer which includes ethylene propylene rubber, ethylene propylene diene monomer, polyisobutylene butyl rubber, ethylene vinyl acetate graft copolymers thereof with C.sub.3 to C.sub.10 unsaturated mono- and polycarboxylic acids, a tackifying resin and a di- or polyamine cross-linking agent having 2-10 carbon atoms, which is useful as a hot melt or pressure sensitive adhesive having enhanced higher temperature properties.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: June 13, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Kenneth O. McElrath, Martha L. Robertson, Wai Y. Chow
  • Patent number: 4832747
    Abstract: Bitumen emulsions, usually having a relatively low average particle size, can be continuously and speedily prepared by a process comprising feeding emulsion components into the first of at least two static mixers, arranged in series. The product is passed from the first mixer to the second mixer maintained at a temperature lower than that prevailing in the first mixer and below the boiling point of water. The final emulsion product is obtained from the outlet of the second mixer. Bitumen emulsions of up to 70 wt. % bitumen of mean particle size of from 2 to 8 microns are also described.
    Type: Grant
    Filed: March 15, 1988
    Date of Patent: May 23, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Jean Marchal
  • Patent number: 4824921
    Abstract: Resins having an improved combination of softening point and tackifying properties together with good color and heat stability are obtained by Freidel-Crafts copolymerization of 4 to 80 wt. % of a C.sub.5 /C.sub.6 unsaturated feed; 5 to 55 wt. % of a terpene and 3 to 55 wt. % of an unsaturated aromatic compound.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: April 25, 1989
    Assignee: Exxon Research & Engineering Company
    Inventor: Quoc Luvinh
  • Patent number: 4820876
    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: May 27, 1987
    Date of Patent: April 11, 1989
    Assignee: Exxon Research & Engineering Co.
    Inventors: Hugo J. C. Nuttens, Gerard Van Haeren