Patents Represented by Attorney J. F. Hunt
  • Patent number: 4690958
    Abstract: The inclusion of a substantially saturated dicarboxylic acid, anhydride or ester substituted with at least one hydrogen and carbon containing group of at least 30 carbon atoms and optionally an acidic C.sub.2 and/or C.sub.3 olefin polymer or copolymer of molecular weight 500 to 30,000 having an acid number from 30 to 300 wt. % of a resin in a resin based hot melt road marking formulation containing aggregate gives a formulation of improved colour and melt viscosity.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: September 1, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Olivier H. V. Lacoste, Alain De Regel, Hidenori Fujiwara, Raymond C. C. Yap
  • Patent number: 4684707
    Abstract: Petroleum resins of lightened color while retaining satisfactory melting point and compatibility are provided by a process which comprises catalytically polymerizing an aromatic petroleum cracked or reformed fraction, e.g. an aromatic stream boiling between 80.degree. C. and 260.degree. C., sequentially treated with sulfuric Acid followed by distillation to provide an aromatic feedstock portion which is blended with an aliphatic petroleum cracking or reforming fraction feedstock portion containing cationically polymerizable hydrocarbons, less than 0.5 weight percent of cyclodienes and a pentadiene-1,3 to cyclodiene weight ratio of greater than 50, preferably at least 200 in the presence of a Friedel-Craft catalyst into a petroleum resin of lightened color and softening point in the range of 90.degree. C. to 115.degree. C.
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: August 4, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Morris L. Evans
  • Patent number: 4683268
    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: February 18, 1986
    Date of Patent: July 28, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Mary E. Ahner
  • Patent number: 4677176
    Abstract: A 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: February 18, 1986
    Date of Patent: June 30, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Morris L. Evans, Steven G. Hentges
  • Patent number: 4673619
    Abstract: An oriented film is prepared by crosslinking a sheet of polyethylene (preferably HDPE) containing particulate inorganic slip and antiblock additions to provide maximum crosslinking at the surfaces of the sheet and minimum orientation at its middle layer portion, and thereafter heating and stretching the film to obtain an oriented HDPE of high clarity film of improved moisture proof.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: June 16, 1987
    Assignee: Toa Nenryo Kabushiki Kaisha
    Inventors: Yasushi Itaba, Tadao Yoshino, Yutaka Yoshifuji, Keichiro Saito, Jyoichi Tabuchi
  • Patent number: 4650829
    Abstract: Hydrogenated hydrocarbon resins from cyclopentadiene and/or substituted cyclopentadiene of softening point below 90.degree. C. and having a (Tg) as from 35 to 70 lower than the softening point with less than 12 wt. % of the resin having a molecular weight above 1000 are particularly useful as tackifiers in pressure sensitive adhesives especially in hydrogenated styrene/butadiene/styrene block copolymer adhesive formulations where their use can obviate the need for plasticizing oil.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: March 17, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventors: Bernard Bossaert, Andre Lepert, Jacques Lechat, Vincent L. Hughes, Raymond C. C. Yap
  • Patent number: 4636340
    Abstract: An oriented film is prepared by crosslinking a sheet of polyethylene (preferably HDPE) containing particulate inorganic slip and antiblock additions to provide maximum crosslinking at the surfaces of the sheet and minimum orientation at its middle layer portion, and thereafter heating and stretching the film to obtain an oriented HDPE of high clarity film of improved moisture proof.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: January 13, 1987
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Yasushi Itaba, Tadao Yoshino, Yutaka Yoshifuji, Keichiro Saito, Jyoichi Tabuchi
  • Patent number: 4636555
    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 a C.sub.5 /C.sub.6 unsaturated feed and 5 to 30 wt. % of para methyl styrene.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: January 13, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventors: Quoc Luvinh, Jacques Lechat, Morris L. Evans, Andre Lepert
  • Patent number: 4629766
    Abstract: An improved method for making hydrogenated petroleum resins by subjecting the resin to hydrogenation in the presence of a sulfided nickel (2 to 10 wt. %)--tungsten (10 to 25 wt. %) catalyst supported on a gamma-alumina having fresh catalyst surface area ranging from 120 to 300 m.sup.2 /g under a hydrogen pressure of 150 to 200 atmospheres and at a temperature in the range 250.degree. C. to 330.degree. C. and the resins so produced.
    Type: Grant
    Filed: June 13, 1985
    Date of Patent: December 16, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Alberto Malatesta, Bernard Bossaert, Jacques Mourand
  • Patent number: 4623698
    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 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: March 28, 1985
    Date of Patent: November 18, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Lutz E. Jacob, Andre Lepert, Morris L. Evans
  • Patent number: 4608173
    Abstract: A filter of a nonwoven fabric capable of removing particles from a fluid has attached to the fibers of said fabric a polymeric substance having a functional group capable of adsorbing said particles. In a preferred embodiment the filter is used to remove carbonaceous particles from a hydrocarbon liquid.
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: August 26, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Koh Watanabe, Michihide Tokashiki, Sadao Wada