Patents Examined by William F. Hamrock
  • Patent number: 4404256
    Abstract: Polymers having a substantially completely fluorinated surface of low surface energy and substantially free of oxygen and having a thickness up to about 200 Angstroms, the remainder of the polymer comprising a non-fluorinated polymer.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: September 13, 1983
    Assignee: Massachusetts Institute of Technology
    Inventors: Madhu Anand, Raymond F. Baddour, Robert E. Cohen
  • Patent number: 4381350
    Abstract: A process for obtaining a dense ion-exchange anionic resin and the product so obtained. The resin is of the type based on a co-polymer of styrene and divinylbenzene. The process involves a liquid phase treatment comprising contacting the resin with bromide in a liquid phase and simultaneously charging the liquid phase with gaseous chlorine while in contact with the resin for reaction to provide a styrene divinylbenzene copolymer ion-exchange anionic resin containing bromine and chlorine groups.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: April 26, 1983
    Assignee: Uranium Pechiney Ugine Kuhlmann
    Inventors: Edouard Grimaud, Maurice Troussier
  • Patent number: 4380590
    Abstract: Emulsion copolymer particles with diameters smaller than 1.5 micrometers and functionalized with cation exchange functional groups are prepared and suspended as emulsions in liquid media to form liquid cation exchange materials.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: April 19, 1983
    Assignee: Rohm and Haas Company
    Inventor: Berni P. Chong
  • Patent number: 4374206
    Abstract: Base stable aliphatic anion exchangers are produced by reacting a water soluble methacrylate ester quaternary amine monomer with a non-water soluble glycol dimethacrylate ester cross-linking monomer.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: February 15, 1983
    Assignee: Ionics Incorporated
    Inventors: Russel J. MacDonald, Russell B. Hodgdon
  • Patent number: 4373031
    Abstract: The reaction of vinylbenzyl chloride and N, N, N', N', 2-pentamethyl-1,2-propanediamine (PMPDA) produces a high capacity, base stable, crosslinked, anion exchange polymer useful especially when manufactured in sheet or membrane form for use in electrodialysis apparatus.
    Type: Grant
    Filed: September 25, 1980
    Date of Patent: February 8, 1983
    Assignee: Ionics, Incorporated
    Inventor: Warren A. Waite
  • Patent number: 4371670
    Abstract: Copolymers having a backbone of alternating polymer block and silicon units are described. The copolymers exhibit fire retardant properties.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: February 1, 1983
    Assignee: Atlantic Richfield Company
    Inventor: Le-Khac Bi
  • Patent number: 4369135
    Abstract: Adhesive compositions providing high bond strength, long shelf life, desirable flow characteristics and end use versatility are prepared by mixing a copolymer of olefinic monomers including maleic anhydride and/or derivatives thereof, plasticizer and at least one monofunctional compound which reacts with the copolymer to render it soluble in the resulting mixture and substantially soluble in the plasticizer. Water based, hot melt and pressure sensitive embodiments of such compositions are included.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 18, 1983
    Assignee: Monsanto Company
    Inventors: Albert W. Morgan, Roland G. Ribaudo
  • Patent number: 4369298
    Abstract: A cured resin consisting substantially of a first polymer unit derived from an unsaturated compound having two terminal vinyl groups consisting of bis(alkyleneoxyphenyl)-diacrylates or dimethacrylates, bis(alkyleneoxyphenyl)diallyl ethers, and bis(alkyleneoxyphenyl)diallyl carbonates, and a second polymer unit derived from another unsaturated compound radical-polymerizable with the first-mentioned unsaturated compound, said polymer units being bonded to each other at random.The aforesaid cured resin can be producted by copolymerizing an intimate mixture consisting substantially of at least one compound selected from the first-mentioned unsaturated compounds having two terminal vinyl groups and prepolymers thereof and at least one compound selected from other unsaturated compounds radical-copolymerizable with the first-mentioned unsaturated compounds and prepolymers thereof in the presence of a radical polymerization initiator.
    Type: Grant
    Filed: May 19, 1981
    Date of Patent: January 18, 1983
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Yasuji Kida, Kazuo Shikata
  • Patent number: 4368312
    Abstract: The invention concerns embedding media for producing essentially non-polar and polar embedding mediums. The non-polar embedding medium comprises ethylmethacrylate, n-hexylmethacrylate, triethyleneglycoldimethacrylate and a small amount of polymerization initiator. The polar embedding medium comprises 2-hydroxyethylacrylate, 2-hydroxypropylmethacrylate, n-hexylmethacrylate, triethyleneglycoldimethacrylate, and a small amount of polymerization initiator. The embedding mediums of the invention are particularly suitable for the preparation of a polymer embedded biological material for light or electron microscopic study of thin sections thereof. The embedding mediums can be polymerized at low temperature and UV light employed for initiating polymerization.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: January 11, 1983
    Assignee: Chemische Werke Lowi G.m.b.H.
    Inventor: Eric Carlemalm
  • Patent number: 4366267
    Abstract: Aluminum perchlorate, cupric perchlorate and chromic perchlorate are used as catalysts for acid catalyzed curable resins.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: December 28, 1982
    Assignee: The Quaker Oats Company
    Inventor: George S. Everett
  • Patent number: 4366261
    Abstract: Novel anion exchange resin composites having hydrous chromium III oxide (Cr.sub.2 O.sub.3. nH.sub.2 O) incorporated therein are useful in removing a wide array of polyvalent metal cations from aqueous solution.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: December 28, 1982
    Assignee: The Dow Chemical Company
    Inventor: Alvin F. Beale, Jr.
  • Patent number: 4365086
    Abstract: A polyperoxyketal having at least one carboxy group--an acid, hydrocarbon ester, a metal ion, or as part of an anhydride. Illustrations are: n-Butyl .gamma.,.gamma.-bis-(t-butylperoxy) valerate and Barium .gamma.,.gamma.-bis(t-butylperoxy) valerate. These polyperoxyketals are vulcanizing agents for thermoplastic polymers such as rubber and ethylenepropylene rubber.
    Type: Grant
    Filed: June 6, 1963
    Date of Patent: December 21, 1982
    Assignee: Pennwalt Corporation
    Inventors: Wilbur H. McKellin, Orville L. Mageli, Antonio J. D'Angelo
  • Patent number: 4365038
    Abstract: Novel compositions are provided which include a polyphenylene ether resin and EPDM-rubber polystyrene modified or polymerized with silicone oil which is free from unsaturated hydrocarbon groups. Included within the disclosure are methods of preparing and molding such compositions and the molded products obtained therefrom. The compositions provide molded products with substantially better room temperature properties, such as Izod impact and Gardner impact strengths, and surface appearance (gloss), than blends of polyphenylene ether with EPDM-polystyrene with no modifier or modified with an aliphatic mineral oil. Both Izod and Gardner impact strengths at low temperatures are also improved. Also included within the scope of the invention are reinforced and flame-retardant compositions of said polyphenylene ether resin and said EPDM-polystyrene polymerized with silicone oil.
    Type: Grant
    Filed: December 23, 1980
    Date of Patent: December 21, 1982
    Assignee: General Electric Company
    Inventors: Glenn D. Cooper, Arthur Katchman
  • Patent number: 4365042
    Abstract: There are provided novel compositions comprising blends of polyphenylene oxides with EPDM-silicone rubber, and optionally a polystyrene resin. The compositions when molded exhibit improved ductility and impact strength. Included within the disclosure are methods of preparing and molding the novel compositions and the molded products obtained therefrom.
    Type: Grant
    Filed: December 23, 1980
    Date of Patent: December 21, 1982
    Assignee: General Electric Company
    Inventors: Glenn D. Cooper, Arthur Katchman
  • Patent number: 4365023
    Abstract: A ternary block copolymer and a method for manufacturing it. The copolymer has a molecular structure consisting of a macro-molecule having a cation exchange group, a macro-molecule having an anion exchange group and another macro-molecule which does not have any ion exchange group. These macro-molecules are linked together into a straight chain.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: December 21, 1982
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Teruo Fujimoto, Mitsuru Nagasawa, Syotaro Ohno
  • Patent number: 4363897
    Abstract: The invention disclosed herein provides a novel thermally reversible copolymer having up to about 11 percent by weight of an N-(alkoxymethyl)acrylamide, a diene-containing synthetic rubber and a metal. The thermally reversible copolymer can be blended with conventional styrene-butadiene rubbers to improve the green strength thereof. Also disclosed herein is a process for improving the green strength of styrene-butadiene rubber which includes the steps of charging a reaction vessel with water, an emulsifier, an initiator, an N-(alkoxymethyl)-acrylamide monomer and a vinyl monomer where one is desired, purging the vessel with an inert gas, charging a diene monomer and an activator to the reaction vessel, polymerizing the monomers to form a copolymer latex, coagulating the latex with an aqueous metal salt to form a thermally reversible polymer and compounding the thermally reversible polymer with styrene-butadiene rubber.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: December 14, 1982
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Binnur Gunesin, Gary R. Hamed, Jung W. Kang, Donald N. Schulz
  • Patent number: 4362849
    Abstract: Butadiene is partially polymerized anionically in the presence of styrene to form a styrene-butadiene rubber of low styrene content. The resultant living polymer is terminated, butadiene removed, and optionally the styrene polymerized with or without additional styrene to form impact resistant styrene polymer.
    Type: Grant
    Filed: November 19, 1980
    Date of Patent: December 7, 1982
    Assignee: The Dow Chemical Company
    Inventors: Lu H. Tung, Larry L. Kirkby, Charles E. Lyons
  • Patent number: 4362826
    Abstract: A composition comprising a varnish of heat-resistant resin having active hydrogen in the molecule and a bismaleimide compound or derivative thereof admixed with the varnish affords a heat-resistant resin product of improved properties. Especially when a bismaleimide compound or derivative thereof is added to a varnish of polyimide resin having active hydrogen in the molecule and the composition is applied to a metal film substrate to form a resin film, the film has improved peel strength and, in itself, also has improved strength and elongation.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: December 7, 1982
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuya Yonezawa, Hirosaku Nagano
  • Patent number: 4362785
    Abstract: Polymers containing recurring 2,5-oxolanylene units wherein at least 60 percent of the units are joined directly to one another so as to provide segments consisting of at least 6 of said units.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: December 7, 1982
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: William J. Schultz, Alan R. Katritzky
  • Patent number: 4362837
    Abstract: Viscous, homogeneous and thermoreversible gels containing polymer chains are obtained by a process in which a solution of a prepolymer or polymer which contains at least one free acid group at each chain end in a non polar solvent selected among the aliphatic, alicyclic and aromatic hydrocarbons having a dielectric constant of less than about 3 is reacted at room temperature with a stoechiometric amount, based on the acid group content of the polymer, of a metal aliphatic alkoxide so as to neutralize all the free acid groups and a sufficient amount of the non polar solvent is distilled for removing, in a substantially quantitative manner, the aliphatic alcohol formed by said reaction.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: December 7, 1982
    Assignee: Unibra Societe Anonyme
    Inventors: Philippe T. Teyssie, Robert J. Jerome, Guy J. Broze