Patents Represented by Attorney A. J. Young

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  • 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
  • Fail-safe electrical-ground indicator
    Patent number: 4642554
    Abstract: A fail-safe electrical ground indicator is described which includes apparatus for testing whether a vessel or piece or equipment is adequately grounded. The indicator further includes grounded parallel resistors for checking the integrity of the test apparatus, means for making electrical contact between the test apparatus and each of the resistors one at a time, means for making electrical contact between the test apparatus and both resistors at the same time, means for determining whether an electrical current passing through the test apparatus and each of the resistors separately exceeds a specified value, and means for determining whether an electrical current passing through the test apparatus and all of the resistors exceeds the specified value.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: February 10, 1987
    Assignee: The Dow Chemical Company
    Inventor: Daniel A. Aucoin
  • 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
  • N-vinyl-2-oxazolidinones as reactive diluents in actinic radiation curable coatings
    Patent number: 4639472
    Abstract: An actinically curable composition containing (1) an oligomer having a molecular weight within the range of from about 200 to about 3000 and which is end capped with reactive functional groups to provide sites for free radical polymerization by actinic radiation and (2) as a reactive diluent, an N-vinyl-2-oxazolidinone in which the number 4 and 5 carbon atoms each have two constituents which are all independently selected from hydrogen and alkyl radicals having from 1 to 4 carbon atoms.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: January 27, 1987
    Assignee: The Dow Chemical Company
    Inventors: John G. Green, David G. Hunt
  • 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
  • Temperature measuring apparatus
    Patent number: 4630939
    Abstract: This invention relates to an apparatus and process for measuring the temperature of a fluid environment within a vessel. The apparatus features a chamber which opens into the vessel and thus contains a portion of the fluid environment. Structure is provided for preventing substantial convective movement between the portion of the fluid environment within the chamber and the remainder of the fluid environment. A temperature sensing device is also provided which is movable from a position within the chamber to a position into the remainder of the fluid environment for obtaining a temperature measurement. The chamber is maintained at a temperature cooler than that of the fluid environment. This invention also relates to a process for the periodic measuring of the temperature of a fluid environment in a vessel.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: December 23, 1986
    Assignee: The Dow Chemical Company
    Inventor: M. Dale Mayes
  • 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
  • Liquid phase chlorination of chlorinated methanes
    Patent number: 4614572
    Abstract: This invention relates to an improved liquid phase chlorination process for the chlorination of methyl chloride to preferentially produce methylene chloride. The chlorine is provided to the reaction mixture in a mole percent, based upon the total moles of chlorine and methyl chloride in the mix, which ranges from about 16 mole percent to about 2 mole percent.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: September 30, 1986
    Assignee: The Dow Chemical Company
    Inventors: Michael T. Holbrook, Thomas E. Morris
  • 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
  • Purification of polymer solutions
    Patent number: 4587330
    Abstract: Cloudy material in organic diluent solutions of polymers prepared by anionic polymerization with a lithium initiator is removed by treating the polymer solutions resulting from the polymerization with boric acid, separating the solid material from the solutions, and isolating the polymer.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: May 6, 1986
    Assignee: Atlantic Richfield Company
    Inventors: David R. Warfel, Harold L. Nicholson
  • Copolymers of terminally functional polymers
    Patent number: 4567239
    Abstract: The alkyllithium initiated preparation of terminally functional polymers in high yield is accomplished by first capping a macromolecular polymer with an alkylene sulfide prior to terminating the molecule with a halogenated compound containing a polymerizable moiety. The resulting macromolecular monomers are useful in the preparation of graft copolymers by copolymerizing the macromolecular monomers with monomers copolymerizable therewith.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: January 28, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Paul A. Mancinelli