Patents Represented by Attorney Lewis J. Young

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  • Modified styrenic polymer beads
    Patent number: 4661564
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: April 28, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • High strength foamed articles
    Patent number: 4661386
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: April 28, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • High strength foamed articles
    Patent number: 4659600
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: April 21, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Process for producing modified styrenic polymer beads for high strength foamed articles
    Patent number: 4659745
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: April 21, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Acrylic hot melt pressure sensitive adhesive compounds
    Patent number: 4656213
    Abstract: Acrylic pressure sensitive hot melt adhesives having improved creep resistance at ambient temperatures and desirable melt viscosity at elevated application temperatures are prepared by copolymerizing suitable acrylic and methacrylic acids and alkyl esters with 10-40 percent by weight of an acrylate or methacrylate terminated vinyl aromatic monomer based macromolecular monomer.Compounding these adhesives with suitable tackifiers and plasticizers produces adhesives having low molten viscosity and significantly better shear adhesion, tack, and peel adhesion than is possible with the uncompounded acrylic adhesives.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: April 7, 1987
    Assignee: Atlantic Richfield Company
    Inventor: James A. Schlademan
  • Modified styrenic polymer beads
    Patent number: 4652609
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: March 24, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Expandable polypropylene interpolymer particles
    Patent number: 4647593
    Abstract: A process for producing a polypropylene-polystyrene interpolymer which can be impregnated with a blowing agent and can then be expanded under normal conditions for polystyrene particles to low density, fine cell structure foams. The interpolymer is viscbroken during the polymerization of the styrene. The polypropylene is lubricated prior to formation of the interpolymer. The process forms particles which can be impregnated with blowing agent directly.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: March 3, 1987
    Assignee: Atlantic Richfield Company
    Inventors: Kristine M. Bartosiak, Michael W. Knauff
  • Novel coupling agent for star-block copolymers
    Patent number: 4640958
    Abstract: A new coupling agent has been disclosed which is acryloyl chloride. This coupling agent undergoes anionic polymerization through the acrylate unsaturation rather than anionic attack at the acid chloride.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: February 3, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Paul A. Mancinelli
  • Photocell assembly
    Patent number: 4636578
    Abstract: Photocell modules wherein one or more photocells are encapsulated within a thermoplastic polymeric pottant between the layers of a rigid or flexible laminate. The pottant is a graft copolymer of (a) at least one addition polymerizable backbone monomer having a glass transition temperature (T.sub.g) of less than 0.degree., (b) at least one addition polymerizable backbone monomer having a T.sub.g of 50.degree.-150.degree. C., and (c) a poly (vinyl aromatic) addition polymerizable macromonomer of 3,000-50,000 molecular weight having a T.sub.g of at least 30.degree. C. The pottant is highly light-transmissive, electrically insulating and provides excellent protection for the photocells and circuitry at low cost.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: January 13, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Stewart C. Feinberg
  • Purification of polymer solutions
    Patent number: 4636540
    Abstract: Cloudy material in organic diluent solutions of macromonomers, prepared by anionic polymerization with a lithium initiator and termination with a halogen-containing terminating agent is removed by treating the polymer solutions resulting from the polymerization with an adsorbent selected from an alkaline earth metal silicate, an ion exchange resin, and a mixture of the silicate and ion exchange resin composition, separating the solid material from the solutions, and isolating the macromonomer.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: January 13, 1987
    Assignee: Atlantic Richfield Company
    Inventor: David R. Warfel
  • Anti-static styrene polymer particles by coating
    Patent number: 4628068
    Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion and after molding into an article are produced by adding 0.1 to 0.4 parts of dialkyl bisalkoxylated quaternary ammonium salts per 100 parts of polymer particles by coating of the expandable polymer particles with the salts. The salts may be added as sole antistatic agent or in addition to the known internal additives which impart fastcool and antilump properties.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: December 9, 1986
    Assignee: Atlantic Richfield Company
    Inventors: Haven S. Kesling, Jr., James J. Harris
  • Process for producing modified styrenic polymer beads for high strength foamed articles
    Patent number: 4626554
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: November 29, 1985
    Date of Patent: December 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Process for producing modified styrenic polymer beads for high strength foamed articles
    Patent number: 4622346
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: November 29, 1985
    Date of Patent: November 11, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Expandable polypropylene interpolymer particles
    Patent number: 4622347
    Abstract: A process for producing a polypropylenepolystyrene interpolymer which can be impregnated with a blowing agent and can then be expanded under normal conditions for polystyrene particles to low density, fine cell structure foams. The interpolymer must be viscbroken, lubricated and stress relaxed in order to foam at 100.degree. C. to densities less than 2.0 pcf.
    Type: Grant
    Filed: April 7, 1986
    Date of Patent: November 11, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Kent D. Fudge
  • Anti-static styrene polymer particles
    Patent number: 4622345
    Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion and after molding into an article are produced by adding 0.1 to 0.4 parts of trialkyl alkylalkoxylated quaternary ammonium salts, per 100 parts of polymer particles by coating of the expandable polymer particles with the salts. The salts may be added as sole antistatic agent or in addition to the known internal additives which impart fast-cool and anti-lump properties.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: November 11, 1986
    Assignee: Atlantic Richfield Company
    Inventors: Haven S. Kesling, Jr., James J. Harris
  • Anti-lumping styrene polymer particles for molding foams
    Patent number: 4609681
    Abstract: Expandable styrene polymer particles which have anti-stratification and anti-lumping properties during expansion are produced by dry blending styrene polymer particles in the presence of 0.01-0.04 parts of alkyl and alkylaryl ethers of polyethoxyethanol mono- and diesters of phosphoric acid per 100 parts of polymer particles. The esters may be added as sole anti-stratification or anti-lumping agent or in addition to known anti-lumping agents.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: September 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Alvin R. Ingram
  • Anti-static styrene polymer particles by impregnation
    Patent number: 4608394
    Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion are produced by adding 0.1 to 0.4 parts of alkyl and alkylaryl ethers of polyethoxyethanol mono- and diesters of phosphoric acid per 100 parts of polymer particles during impregnation of the polymer particles with blowing agents. The esters may be added as sole antistatic agent or in addition to the known internal additives which impart fast-cool and anti-lump properties.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: August 26, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Alvin R. Ingram
  • Anti-static styrene polymer particles by coating
    Patent number: 4603149
    Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion and after molding into an article are produced by adding 0.1 to 0.4 parts of dialkyl bisalkoxylated quaternary ammonium salts per 100 parts of polymer particles by coating of the expandable polymer particles with the salts. The salts may be added as sole antistatic agent or in addition to the known internal additives which impart fastcool and antilump properties.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: July 29, 1986
    Assignee: Atlantic Richfield Company
    Inventors: Haven S. Kesling, Jr., James J. Harris
  • Anti-static styrene polymer particles
    Patent number: 4599366
    Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion and after molding into an article are produced by adding 0.1 to 0.4 parts of trialkyl alkylalkoxylated quaternary ammonium salts, per 100 parts of polymer particles by coating of the expandable polymer particles with the salts. The salts may be added as sole antistatic agent or in addition to the known internal additives which impart fast-cool and anti-lump properties.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: July 8, 1986
    Assignee: Atlantic Richfield Company
    Inventors: Haven S. Kesling, Jr., James J. Harris
  • Anti-lumping styrene polymer particles for molding foams
    Patent number: 4588751
    Abstract: Expandable styrene polymer particles which have anti-stratification and anti-lumping properties during expansion are produced by dry blending styrene polymer particles in the presence of 0.01-0.04 parts of alkyl and alkylaryl ethers of polyethoxyethanol mono- and diesters of phosphoric acid per 100 parts of polymer particles. The esters may be added as sole anti-stratification or anti-lumping agent or in addition to known anti-lumping agents.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: May 13, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Alvin R. Ingram