Patents Represented by Attorney Lewis J. Young

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  • Tertiary ethers as blowing agents for foam polymer systems
    Patent number: 5075346
    Abstract: The use of tertiary ethers as blowing agent allows the preparation of lower density foams from many types of polymeric materials.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: December 24, 1991
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Fred M. Sonnenberg, Joseph A. Verdol
  • Purification, impregnation and foaming of polymer particles with carbon dioxide
    Patent number: 5049328
    Abstract: A process for making high-purity foam moldings without the use of organic blowing agents involves the use of inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens.The process involves the simultaneous impregnation and purification of the polymers with or without foaming. If foaming is not done in the extractor, the polymeric particles can be foamed in pre-expanders or expanded and molded in downstream equipment.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: September 17, 1991
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Bernard H. Meyer, Joseph C. Kinslow
  • Reducing lustrous carbon in the lost foam process
    Patent number: 5041465
    Abstract: The evaporative casting of molten metals has been shown to produce casting having smooth surfaces with significantly less sign of carbon deposits thereon by using a polystyrene containing a high temperature peroxide, tert-butyl cumyl peroxide.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: August 20, 1991
    Assignee: Arco Chemical Technology, Inc.
    Inventor: Fred M. Sonnenerg
  • Method of controlling the pyrolysis rate of a plastic foam
    Patent number: 5035275
    Abstract: The thermal shrinkage and pyrolysis rate of plastic foam moldings are successfully controlled by coating the expandable plastic beads used in the preparation of the moldings with varying amounts of substantially water-insoluble inorganic siliceous materials. The plastic foam moldings are useful as patterns in an evaporative casting process, wherein the molding is vaporized and replaced by molten metal.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: July 30, 1991
    Assignee: Arco Chemical Technology, Inc.
    Inventor: Takeshi Yamaguchi
  • Polymerization of tetrahydrofuran with fuming sulphuric acid and a complex anion cocatalyst
    Patent number: 5001277
    Abstract: Tetrahydrofuran has been polymerized and copolymerized to form polymers of 1000 to 10,000 molecular weight using fuming sulfuric acid with a cocatalyst selected from salts of Group VA metal halides and superacid salts. The cocatalyst salts may be, for example, NaPF.sub.6, NaSbF.sub.6, and LiO.sub.3 SCF.sub.3.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: March 19, 1991
    Assignee: Arco Chemical Technology, Inc.
    Inventor: Jonathan L. Schuchardt
  • Method for enhancing thermal expandability of direct-injection foams
    Patent number: 4925606
    Abstract: The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: May 15, 1990
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Peter S. Francis, Thomas M. Chapman
  • Tetrahydrofuran purification
    Patent number: 4918204
    Abstract: Purification of tetrahydrofuran from the dehydrocyclization of 1,4-butanediol in the presence of an organic acid catalyst has been accomplished by the extractive distillation of crude tetrahydrofuran containing water using monopropylene glycol as an extractive solvent.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: April 17, 1990
    Assignee: Arco Chemical Technology, Inc.
    Inventors: T. Thomas Shih, Te Chang
  • Reimpregnation of plastic foam particles with CO.sub.2
    Patent number: 4911869
    Abstract: The process of making foam moldings without the use of organic blowing agents involves the use of inorganic gases such as carbon dioxide, nitrogen, air, solid carbon dioxide and other pneumatogens. Because of the rapidity with which these gases diffuse out of the polymer particles, it is necessary to pre-expand the particles and then reimpregnate the particles with the same or different gas.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: March 27, 1990
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Bernard H. Meyer, Joseph C. Kinslow
  • Preparation of discrete particles of polyalkylene carbonate
    Patent number: 4853462
    Abstract: The selection of the proper solvent systems for polyalkylene carbonates which completely dissolve the polymer at high temperatures but are non-solvents at lower temperatures allows one to obtain discrete particles of the polymers suitable for many applications, processing and handling. The particles size can be controlled from about 30 to about 3000 microns in diameter.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: August 1, 1989
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Donald E. Hostetler, Michael J. Cannarsa, Haven S. Kesling, Jr., Hsiang-Ning Sun
  • Dibutylin compounds in styrene monomer polymerization
    Patent number: 4853445
    Abstract: In the suspension polymerization of styrene monomers in water using suitable suspension stabilizers, the only modifier needed has been found to be organotin compounds in amounts from 10 to 1000 ppm based on monomer. The product beads have a narrow bead size distribution.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: August 1, 1989
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Bernard H. Meyer, Joseph C. Kinslow, Paul E. Arch, D. Harper Meek
  • Melt processable aliphatic polycarbonate terpolymers
    Patent number: 4851507
    Abstract: The addition of a small amount of a second epoxide to the copolymerization of ethylene oxide or propylene oxide with carbon dioxide can give a melt processable polyalkylene carbonate terpolymer which can be processed without extensive thermal decomposition. This invention has particular utility in thermoplastic applications such as injection molding, blow molding, and film manufacture.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: July 25, 1989
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Haven S. Kesling, Jr., Michael J. Cannarsa, Hsiang-Ning Sun
  • Isopentane as blowing agent to improve coffee retention in foam cups molded from expandable polystyrene
    Patent number: 4840759
    Abstract: Cups have been molded from expandable styrene polymer particles having a portion or all of the blowing agent replaced by isopentane. Cups molded from these beads were coffee leak tested and generally exhibited enhanced retention of coffee.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: June 20, 1989
    Assignee: Arco Chemical Technology, Inc.
    Inventors: Paul E. Arch, Edwin H. Niemann
  • Polyalkylene carbonate hot melt adhesive
    Patent number: 4833036
    Abstract: Copolymers or terpolymers of carbon dioxide and at least one epoxide are found to be useful in formulations for adhesive compositions. Polarity due to the carbonate group and non-polarity due to the alkylene groups in the resulting polyalkylene carbonates makes it possible to adhere a large number of different surfaces such as steel, aluminum, fluoropolymers, and polyesters to themselves or to each other.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: May 23, 1989
    Assignee: ARCO Chemical Technology, Inc.
    Inventors: Michael J. Cannarsa, Haven S. Kesling, Jr., Donald E. Hostetler, Terence A. Cooper, Hsiang-Ning Sun
  • Preparation of unsaturated polyesters using bis-hydroxyalkyl esters of aromatic dicarboxylic acids
    Patent number: 4812553
    Abstract: The novel polyesters are prepared by direct esterification of bis-hydroxyalkyl esters of aromatic diacids with unsaturated diacids or their anhydrides. These polyesters differ from the prior art polyesters in that they have alternating structures of saturated and unsaturated esters.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: March 14, 1989
    Assignee: Arco Chemical Technology, Inc.
    Inventor: Stephen H. Harris
  • Isopentane as blowing agent to improve coffee retention in foam cups molded from expandable polystrene
    Patent number: 4798749
    Abstract: Cups have been molded from expandable styrene polymer particles having a portion or all of the blowing agent replaced by isopentane. Cups molded from these beads were coffee leak tested and generally exhibited enhanced retention of coffee.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: January 17, 1989
    Assignee: Arco Chemical Company
    Inventors: Paul E. Arch, Edwin H. Niemann
  • Ternary blends of polyvinyl chloride
    Patent number: 4798868
    Abstract: Disclosed are modable polyblends comprising a polyvinyl chloride resin blended with a copolymer of an unsaturated dicarboxylic acid moiety and a monomer copolymerizable therewith and an interfacial modifier to form a blend having improved mechanical and physical porperties. The dicarboxylic acid copolymer may be with or without rubber modifiers.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: January 17, 1989
    Assignee: Arco Chemical Company
    Inventors: Frank E. Lordi, Peter J. Vanderpool
  • Reduction of catalyst usage in epoxide/CO.sub.2 polymerization
    Patent number: 4789727
    Abstract: The catalyst efficiency of zinc carboxylate catalyst in the copolymerization of alkylene oxides with carbon dioxide to form polycarbonates has been increased by the addition of a small amount of certain diepoxides to the reaction.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: December 6, 1988
    Assignee: Arco Chemical Company
    Inventor: Hsiang-Ning Sun
  • Use of rubbery copolymers to decrease coffee leakage in foam cups
    Patent number: 4785022
    Abstract: Various rubber polymers and copolymers have been added as a coating to seed beads of vinyl aromatic polymers. Cups molded from these beads were coffee leak tested and generally exhibited enhanced retention of coffee.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: November 15, 1988
    Assignee: Arco Chemical Company
    Inventors: Fred M. Sonnenberg, Dennis M. Hajnik
  • Soluble epoxide/carbon dioxide copolymerization catalysts
    Patent number: 4783445
    Abstract: Catalysts which are soluble in a variety of solvents are prepared by reacting zinc compounds with anhydrides in the presence of an alcohol or by reacting zinc salts with a monoester of a dicarboxylic acid. These catalysts can be added as a solution to a mixture of epoxides and carbon dioxide to prepare polyalkylene carbonates.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: November 8, 1988
    Assignee: Arco Chemical Company
    Inventor: Hsiang-Ning Sun
  • Method for enhancing thermal expandability of direct-injection foams
    Patent number: RE34123
    Abstract: The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: November 10, 1992
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Peter S. Francis, Thomas M. Chapman