Patents Assigned to Gulf Oil Corporation
  • Patent number: 4360044
    Abstract: Apparatus is provided for blending large batches of particulate polymers that are compositionally heterogeneous into batches that are compositionally uniform. The apparatus consists of a plurality of horizontally aligned cylindrical storage bins, a common feed line for feeding particulate polymer to each of the storage bins, and conveying means running under each of the storage bins to receive particulate polymer discharged from the bins. Each bin contains six or more vertically aligned partition walls that extend radially from the midpoint of the bin to the wall to divide the bin into at least six storage compartments of substantially equal volumetric capacity. The vertical partition walls differ in height in a regular descending order so that as material is charged to and fills one compartment, it overflows the shorter wall to fill the adjacent compartment. Upon being discharged from the bin, the contents of the several compartments of the bin are mixed to provide a more homogeneous batch of particles.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: November 23, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Peter M. Wisneski
  • Patent number: 4359556
    Abstract: Hot melt adhesive compositions are provided which contain 40-98 weight % of a thermoplastic polyamide resin derived from a dimer acid and a low molecular weight aliphatic diamine, and 2-60 weight % of an alkenyl succinic anhydride.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: November 16, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Pallavoor R. Lakshmanan, Benedict J. Monachino
  • Patent number: 4359552
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is an aliphatic hydrocarbon resin.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: November 16, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan
  • Patent number: 4359440
    Abstract: A process is disclosed for preparing a composite polymer film construction by a coextrusion process. An ethylene polymer or an isotactic propylene polymer is employed to form the surface layers and a blend of an ionomer resin and an alkenyl succinic anhydride is employed to form the intermediate layer.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: November 16, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Pallavoor R. Lakshmanan
  • Patent number: 4356238
    Abstract: Coated articles are disclosed in which a sheet of paper, aluminum foil, ethylene polymer, or isotactic propylene polymer is coated with a blend of an ionomer resin and an alkenyl succinic anhydride.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: October 26, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Pallavoor R. Lakshmanan
  • Patent number: 4355125
    Abstract: A process is disclosed for preparing stable aqueous dispersions of ionomer resins. Intimate fusion blends of 100 parts of an ionomer resin and about 5 to 900 parts of an alkenyl succinic anhydride (the alkenyl group containing about 16 to 52 carbon atoms) are heated and stirred with an aqueous alkaline medium.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: October 19, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Pallavoor R. Lakshmanan
  • Patent number: 4353418
    Abstract: Disclosed are a method and apparatus for the in situ retorting of oil shale and purification products comprising establishing an underground in situ retort containing a mass of rubblized matter comprising oil shale and establishing a flame front within the rubblized matter. Oxygen containing gas comprising at least about 90 weight percent oxygen and diluent are passed into the retort to support combustion and form combustion gases suitable for the retorting of the rubblized mass and formation of off-gas comprising hydrogen, hydrocarbons, and contaminants. Off-gas comprising hydrogen, hydrocarbons, and contaminants is recovered from the retort and hydrocarbons and contaminants are substantially separated from at least a portion of the off-gas to produce a purified gas stream comprising hydrogen.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: October 12, 1982
    Assignees: Standard Oil Company (Indiana), Gulf Oil Corporation
    Inventors: Gerald B. Hoekstra, David R. Christian
  • Patent number: 4340687
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is an alpha-methylstyrene/vinyl toluene copolymer.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: July 20, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan
  • Patent number: 4339382
    Abstract: In the manufacture of N-aryl or alkylthiocarbamoyl-2-amino-1H-isoindole-1,3-(2H)diones of the type represented by the structural formula ##STR1## by ring closure of a corresponding ortho-carbonyl substituted benzoylhydrazine thiocarboxamide, greatly improved yields are obtained by cyclization of a compound of the structural formula: ##STR2## by reaction under mildly basic conditions at ambient or room temperature in the presence of a non-reactive polar organic solvent and a hindered aliphatic amine.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: July 13, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Joel L. Kirkpatrick
  • Patent number: 4338416
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is a terpene resin.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: July 6, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan
  • Patent number: 4338171
    Abstract: Coating compositions are provided which consist of a polymerizable ethylenically unsaturated material having included therein as a photoinitiator a di- or tetraester of 3,4,3',4'-benzophenone tetracarboxylic acid or a diester of 4,4'-benzophenone dicarboxylic acid.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: July 6, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Walter P. Barie, Jr., Thomas F. Huemmer, Pallavoor R. Lakshmanan
  • Patent number: 4338415
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is an aromatic hydrocarbon resin.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: July 6, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan
  • Patent number: 4338414
    Abstract: Hot melt adhesive compositions are provided which contain (a) about 10-30 weight % of an alkenyl succinic anhydride, (b) about 20-60 weight % of an ethylene copolymer, and (c) about 10-40 weight % of a tackifying resin which is a polystyrene resin.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: July 6, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Vikramkumar Acharya, Pallavoor R. Lakshmanan
  • Patent number: 4338257
    Abstract: Novel compounds having the structural formula ##STR1## in which R is H or agriculturally acceptable salts thereof, or C.sub.1 to C.sub.4 alkyl and R.sup.1 and R.sup.2 are hydrogen or C.sub.1 to C.sub.4 alkyl, alkoxy or carbalkoxy, halogen, thiocyano, hydroxy, phenoxy, methylenedioxy or methylthio are useful as plant growth regulators, particularly to increase fruit set with minimum deformative side effects.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: July 6, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Natu R. Patel
  • Patent number: 4337298
    Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (4) optionally a tackifying resin such as a glyceryl ester of a rosin acid.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Patent number: 4337297
    Abstract: Blends of thermoplastic polymers which may be coextruded to form bonding layers in film laminates contain (a) a copolymer of ethylene with a lower alkyl acrylate or methacrylate or vinyl acetate, (b) a chlorinated ethylene polymer and optionally (c) a tackifying resin.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Patent number: 4337110
    Abstract: The applicants have provided laminates prepared by (a) impregnating a glass fabric with an N-methyl-2-pyrrolidone solution of a compound having the structure of Formula A shown in FIG. 1 of the drawings, (b) heating the impregnated glass fabric to remove solvent therefrom and to covert the amic acid groups to imide groups, and (c) assembling a plurality of the impregnated glass fabrics from (b) and heating the assembly under pressure to a temperature in the range of 177.degree.-260.degree. C.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Patricia A. Antonoplos, William J. Heilman
  • Patent number: 4335044
    Abstract: A novel class of compounds which are useful as plant growth regulators is disclosed, having the general structural formula: ##STR1## R.sup.1 is; C.sub.1 to C.sub.4 alkyl, nitro or halo and n is zero or an integer from 1 to 4R.sup.2 is; C.sub.1 to C.sub.4 alkyl, or benzyl, n' is zero, 1 or 2 andAr is; naphthyl, phenyl or phenyl bearing thereon from one to three of the substituents: cyano, benzyloxy, nitro, bromo, chloro, trifluoromethyl and C.sub.1 to C.sub.4 alkyl, alkenyl, alkoxy alkylthio and alkyl-substituted amino.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: June 15, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Loren W. Hedrich
  • Patent number: 4331815
    Abstract: In the manufacture of an N-benzyl-N-isopropyl amide by reaction of N-benzyl-N-isopropylamine with an acid chloride, the amide product is obtained in better purity and yield by employing excess benzylisopropylamine as the acid accepting agent and recovering the amine for re-use by reacting the amine hydrochloride by-product with aqueous sodium hydroxide.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: May 25, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Roger P. Cahoy
  • Patent number: 4331467
    Abstract: A new substance which is useful as a plant growth regulator is 3-imino-2-(1-methyl-3-phenylthioureido)isoindolin-1-one, which may also exist in tautomeric form as 1-(2-cyanobenzoyl)-2-methyl-4-phenylthiosemicarbazide. Formative effects and increased fruit set are obtained by application of the growth regulator to crop plants.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: May 25, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Charles G. Gibbs