Patents Represented by Attorney Dean F. Vance

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  • Olefin polymerization
    Patent number: 4451633
    Abstract: Completely polymerizing olefinic monomer feed, in contact with a coordination catalyst suitable for olefin polymerization, in a mold having the shape of the article, at conditions under which the polymer is produced as a coherent, useful article in the shape of the interior of the mold, and removing the article from the mold. This method permits the production of polyolefin articles which are difficult or impossible to produce from polyolefin powder or pellets by conventional methods, such as articles of polyolefins of such high molecular weight that the polymer would not be processable by a melt process; articles containing extremely high filler loading; articles containing interconnected reinforcement; and articles from molds which require substantial flows through narrow passages.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: May 29, 1984
    Assignee: Shell Oil Company
    Inventors: Thomas F. Brownscombe, Carl L. Willis
  • Manufacture of macrocyclic polyethers
    Patent number: 4435582
    Abstract: This invention deals with a process for the preparation of macrocyclic polyethers of the general formula: ##STR1## wherein x is 1-9; k is 0 or 1 and each R, which may be the same or different, represents a hydrogen atom or a lower alkyl or aryl group, or two R bonded to two adjacent carbon atoms form together with these carbon atoms a cyclic hydrocarbyl configuration, by reacting a compound of the general formula: ##STR2## with a sulphonyl halide in the presence of a base and a halogen-containing solvent, preferably chlorobenzene. The process is of special interest for the manufacture of 18-crown-6.
    Type: Grant
    Filed: April 9, 1981
    Date of Patent: March 6, 1984
    Assignee: Shell Oil Company
    Inventors: Wilhelmus J. Krijnen, Paulus A. M. Grotenhuis
  • Dispersant-VI improver product
    Patent number: 4427834
    Abstract: Lubricating oil additives having both dispersant and viscosity index-improving properties comprise a poly(polyalkenyl aromatic)nucleus, at least three hydrogenated conjugated diene homopolymer or copolymer arms linked to the nucleus, and at least one polymerized nitrogen containing polar compound arm linked to the nucleus.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: January 24, 1984
    Assignee: Shell Oil Company
    Inventor: Michael K. Martin
  • Flame retardant thermally insulating material
    Patent number: 4425440
    Abstract: The invention provides a flame retardant thermally insulating material which comprises cellular polymer particles and fly ash bound into a coherent mass by a dried synthetic polymer latex binder, and a process for providing between at least two spaced-apart surfaces a flame retardant thermal insulation in the form of such a material. The process has particularly useful application in the field of roof insulation in sloping roofs having spaced-apart outer and inner layers.
    Type: Grant
    Filed: September 3, 1982
    Date of Patent: January 10, 1984
    Assignee: Shell Oil Company
    Inventors: Roel Bloembergen, Jan A. Verhave
  • Process for forming oil-soluble product
    Patent number: 4409120
    Abstract: Lubricating oil additives having both dispersant and viscosity index-improving properties are prepared by contacting a star-shaped polymer having a poly(polyalkenyl aromatic) nucleus, at least three conjugated diene homopolymer or copolymer arms linked to the nucleus, and at least one polymerized nitrogen containing polar compound arm linked to the nucleus, with a rectant selected from p-toluenesulfonylhydrazide and hydrazine under conditions wherein the reactants release H.sub.2 N.sub.2, which adds across the residual double bonds in the polymer therein hydrogenating the aliphatic unsaturation and releasing N.sub.2 gas.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: October 11, 1983
    Assignee: Shell Oil Company
    Inventor: Michael K. Martin
  • Coupling process
    Patent number: 4408017
    Abstract: Lithium metal-terminated polymers of one or more alkadienes and of one or more monoalkenyl arenes are coupled by reaction with a coupling agent which has the general formula ##STR1## where X is hydrogen, halogen or an alkyl group and Y is halogen or an alkoxy group.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: October 4, 1983
    Assignee: Shell Oil Company
    Inventor: Michael K. Martin
  • Catalyst preparation
    Patent number: 4400576
    Abstract: Catalysts for the isomerization of n-paraffins are prepared by treating mordenite with an acid solution comprising Na- or K-ions and thereafter with a solution of an NH.sub.4 -compound, mixing the thus treated mordenite with an inert binder material on which a Group VIII noble metal has been deposited and finally shaping the resulting mixture under high pressure.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: August 23, 1983
    Assignee: Shell Oil Company
    Inventor: Gerrit J. den Otter
  • Process for making linear polyethers
    Patent number: 4359589
    Abstract: An improved process for making linear polyethers having a relatively narrow molecular weight distribution comprises contacting a monoepoxide with a salt selected from the group consisting of fluoborate, fluophosphate, fluoantimonate and fluoarsenate salts of a metal selected from the group consisting of alkali metals, alkaline earth metals, lead, nickel, aluminum, cadmium, cobalt, tin, zinc and copper in the presence of a hydroxyl-containing compound at a controlled temperature of about -78.degree. C. to less than +20.degree. C. and in the absence of any additional acid.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: November 16, 1982
    Assignee: Shell Oil Company
    Inventor: Thomas F. Brownscombe
  • Synergistic co-nucleants for butene-1 polymer compositions
    Patent number: 4359544
    Abstract: The crystallization from the melt of an isotactic butene-1 homopolymer composition, isotactic butene-1-ethylene copolymer or isotactic butene-1-propylene copolymer composition is promoted by adding a small amount of stearamide and high density polyethylene as nucleating agents. The two nucleating agents cooperate in a synergistic fashion, resulting in much faster processing rates.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: November 16, 1982
    Assignee: Shell Oil Company
    Inventors: Charles C. Hwo, John A. Martone
  • Fluidized bed reactor for exothermic reactions
    Patent number: 4359448
    Abstract: A reactor for exothermic reactions provided with bundles of narrow axial cooling pipes, mounted between distributing and collecting drums ("steam headers") provided with tube sheets. The distributing drums are placed symmetrically around the outlet end of a central axial coolant inlet pipe, recovering from top to bottom of the reactor. A feed gas inlet at the bottom branches into feed pipes with a quantity of nozzles, in order to allow the gas to fluidize a mass of catalyst particles.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: November 16, 1982
    Assignee: Shell Oil Company
    Inventors: Pieter J. Schuurman, Marius B. Teekens
  • Catalyst preparation
    Patent number: 4359409
    Abstract: Catalysts for the isomerization of n-paraffins are prepared by treating mordenite with an acid solution comprising Na- or K-ions and thereafter with a solution of an NH.sub.4 -compound, mixing the thus treated mordenite with an inert binder material on which a Group VIII noble metal has been deposited and finally shaping the resulting mixture under high pressure.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: November 16, 1982
    Assignee: Shell Oil Company
    Inventor: Gerrit J. den Otter
  • Retort-sterilizable pouch
    Patent number: 4359495
    Abstract: In a retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable polymer layer, and a heat-resistant resin layer, the heat-sealable layer is the cracked product of the blend of a poly(propylene-ethylene) copolymer and an ethylene-vinyl acetate copolymer. This heat-sealable layer composition has improved flow properties and may be extrusion-coated onto a metal film substrate at high speeds.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: November 16, 1982
    Assignee: Shell Oil Company
    Inventors: Carl W. Schroeder, Joseph R. Webster
  • Lube oil additive
    Patent number: 4358565
    Abstract: A modified hydrogenated star-shaped polymer comprising a nucleus, e.g., divinylbenzene, with polymeric arms linked to it is prepared by grafting a hydrogenated star-shaped polymer with a nitrogen-containing polymerizable polar organic compound, e.g., 2-vinylpyridine or 4-vinylpyridine. Such polymers are useful as viscosity index improvers for lube oil compositions, and also possess dispersancy.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: November 9, 1982
    Assignee: Shell Oil Company
    Inventor: Rudolf J. A. Eckert
  • Process for reducing the total sulfur content of a high CO.sub.2 -content feed gas
    Patent number: 4356161
    Abstract: In the process for reducing the total sulfur content of a high CO.sub.2 -content feed gas stream, the feed gas is first passed to an absorption column. The unabsorbed, high CO.sub.2 -content gas is then routed to a reduction step where it is combined with Claus off-gases and the sulfur compounds are reduced to H.sub.2 S. The treated gas is then passed to a second absorption column and the unabsorbed gas is vented to the atmosphere. The fat solvent from both absorption columns is stripped in a common stripper and the stripped gas is passed to a Claus unit for conversion to elemental sulfur.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: October 26, 1982
    Assignee: Shell Oil Company
    Inventors: Harold J. McNamara, Joan A. Schilk
  • Catalytic dewaxing process
    Patent number: 4343692
    Abstract: An improved process for catalytically hydrodewaxing a petroleum feedstock selected from a petroleum distillate or residual fraction, by contact of the feedstock and hydrogen with a catalyst is disclosed where the catalyst is a synthetic ferrierite zeolite having incorporated therewith at least one metal selected from the group consisting of Group VI B, Group VII B and Group VIII metals.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: August 10, 1982
    Assignee: Shell Oil Company
    Inventor: Bruce H. C. Winquist
  • Filler material
    Patent number: 4336301
    Abstract: A filler material for thermoplastic polymers which increases the flexural modulus of the resulting filled system along with increasing the percent elongation to fracture is prepared by mixing a major amount of a mica-like, mineral sheet silicate and a minor amount of an additive such that the resulting surface of the sheet silicate possesses protrusions or nodules.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: June 22, 1982
    Assignee: Shell Oil Company
    Inventor: Robert B. Shaw
  • Plastic bituminous compositions
    Patent number: 4332703
    Abstract: Plastic bituminous compositions comprising(a) 100-30 % w of a mixture of1. 45-99.8 % w of a bituminous component having a penetration of less than 800 (0.1 mm) at 25.degree. C.,2. 0.1-30 %w of a lithium salt of a C.sub.10 -C.sub.40 (hydroxy) fatty acid, and3. 0.1-25 %w of a thermoplastic polymer, and(b) 0-70 %w of a filler having excellent self-adhesive properties even when applied on wet or wetted surfaces. They are cold applicable and shear-stable.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: June 1, 1982
    Assignee: Shell Oil Company
    Inventors: Jan Lijzenga, Gerrit Van Gooswilligen, Thomas C. Blanken
  • Elastosol pastes
    Patent number: 4331581
    Abstract: A process for forming a paste suitable for the preparation of dispersions and coatings is disclosed, said process comprising (1) dissolving a selectively hydrogenated monoalkenyl arene (A) - conjugated diene (B) block polymer in a first solvent, which first solvent is a good solvent for both the A blocks and the B blocks, (2) adding a second solvent to the solution, wherein said second solvent is a good solvent for the A blocks and a poor solvent for the B blocks, therein forming a suspension of micelles, and (3) adding a third solvent to the suspension of micelles, wherein said third solvent is a poor solvent for both the A blocks and the B blocks, therein forming an elastosol paste.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: May 25, 1982
    Assignee: Shell Oil Company
    Inventor: Sol Davison
  • Nitrogen oxide removal process
    Patent number: 4328194
    Abstract: A process for the selective reduction of nitrogen oxide in a combustion effluent gas stream is disclosed wherein the gas stream is contacted with sulfur at a temperature of about 445.degree. C. to 2000.degree. C., therein converting the NO to N.sub.2 and the sulfur to SO.sub.2.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: May 4, 1982
    Assignee: Shell Oil Company
    Inventor: Norm C. Samish
  • Translucent impact polymers
    Patent number: 4309515
    Abstract: Vinyl aromatic compositions having improved impact and translucency are prepared by the interpolymerization of a monovinyl aromatic monomer and a high cis-content polybutadiene rubber in the presence of certain free-radical initiators.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: January 5, 1982
    Assignee: Shell Oil Company
    Inventor: Larry S. Corley