Patents Examined by William F. Hamrock
  • Patent number: 4310451
    Abstract: The free-flow characteristics and processing performance of filled, rigid powder compositions of mass-polymerized PVC resin are improved by incorporating a minor quantity of glycerin into the formulation during the blending operation, said quantity of glycerin ranging from about 0.1 part to 0.5 part per 100 parts of resin, by weight.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: January 12, 1982
    Assignee: Diamond Shamrock Plastics Corporation
    Inventors: Gerald W. Ernest, James R. DeFife
  • Patent number: 4310398
    Abstract: Surface-coating binders based on a copolymer which contains tertiary amino groups and blocked isocyanate groups and is water-soluble or water-dispersible as a result of being at least partially salified with an acid. The copolymer contains, as copolymerized units, an olefinically unsaturated compound which possesses a tertiary amino group, an N-(1-alkenyl)-isocyanate which is blocked with a CH-, OH- or NH-acidic blocking agent, and another olefinically unsaturated compound, with or without one or more copolymerizable olefinically unsaturated compounds which possess hydrogen atoms which are reactive toward isocyanate groups, and has a mean molecular weight of from 1,000 to 20,000. The novel surface-coating binders are used for the cathodic electrocoating of metallic articles.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: January 12, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Gimpel, Heinrich Hartmann, Hans-Uew Schenck
  • Patent number: 4310640
    Abstract: A composition comprising (a) an organic compound having at least one hydrolyzable silyl group and (b) an organic amine and/or an alkali metal hydroxide. The composition is curable upon exposure to moisture, and has superior properties, such as hardness, toughness and stain resistance, when used for example as a coating. The composition can be utilized as a coating material.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: January 12, 1982
    Assignee: Kanegafuchi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Yasushi Kato, Hisao Furukawa, Shoichi Matsumura, Saori Nakatsuka
  • Patent number: 4309516
    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: June 3, 1977
    Date of Patent: January 5, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William J. Schultz, Alan R. Katritzky
  • Patent number: 4309517
    Abstract: Hydrocarbyl esters of N-cyclopropyl-N-hydrocarbylcarbamic acids, such as ethyl N-benzyl-N-cyclopropylcarbamate, are effective coupling agents for conjugated diene polymerization systems employing an alkali metal-based initiator.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: January 5, 1982
    Assignee: Phillips Petroleum Company
    Inventor: Kishore Udipi
  • 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
  • Patent number: 4308364
    Abstract: Lactones derived from gamma-hydroxy acids are employed as coupling agents for polymers derived from alkali metal-initiated polymerizations. These coupling agents provide effective coupling without formation of undesirable by-products.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: December 29, 1981
    Assignee: Phillips Petroleum Company
    Inventor: Kishore Udipi
  • Patent number: 4308363
    Abstract: Halogenation of organic polymers having pendant anhydride groups as such, or when said halogenation is followed by reaction of the pendant anhydride groups with nucleophiles, yields novel halogenated derivatives of said polymers.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: December 29, 1981
    Assignee: The Dow Chemical Company
    Inventor: Walter L. Vaughn
  • Patent number: 4308365
    Abstract: An improved reactive adhesive for bonding rubber to rubber or rubber to other substrates such as metal or plastic, comprises an effective mixture of (a) an ionomer resin comprising a copolymer of ethylene, vinyl or polyoxymethylene monomer with a pendant carboxylic acid-containing compound, and (b) a poly-C-nitroso compound. The ionomer resin may be one which has been metal-or quaternary ammonium-neutralized and may be dispersed in water or the like, along with the poly-C-nitroso compound. Preferably, the poly-C-nitroso compound comprises para-dinitrosobenzene. The ionomer may, for example, comprise a polyethylene-methacrylic acid copolymer which has been neutralized with sodium, zinc, or the like. Preferably, the poly-C-nitroso compound is present in a concentration of at least about 15 parts per 100 parts by weight of said ionomer and, most preferably, between about 35 and about 80 parts per 100 parts by weight of said ionomer resin.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: December 29, 1981
    Assignee: Whittaker Corporation
    Inventor: Richard W. Czerwinski
  • Patent number: 4307210
    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: March 24, 1980
    Date of Patent: December 22, 1981
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Binnur Gunesin, Gary R. Hamed, Jung W. Kang, Donald N. Schulz
  • Patent number: 4307211
    Abstract: Preparation of an ethylene-ethyl acrylate-acrylic acid terpolymer by hydrolysis of ethylene-ethyl acrylate copolymer in an inert atmosphere at a temperature of from about 150.degree. C. to about 450.degree. C. and a pressure of from about 3 to about 300 kg/cm.sup.2.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: December 22, 1981
    Assignee: Union Carbide Corporation
    Inventors: Yukio Ito, Kazuyuki Isobe, Kiroku Tsukada, Fumio Tsuruwaka
  • Patent number: 4307218
    Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: December 22, 1981
    Assignee: The General Tire & Rubber Company
    Inventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal
  • Patent number: 4306955
    Abstract: The thin rubbery layer resulting from the photopolymerization of a thin layer of an aqueous solution of acrylic monomer(s) is face surface coated with a coating of an alkali metal sulfite and/or metabisulfite, and is then shredded, dried and ground to provide acrylic polymer/copolymer from which virtually all residual monomer has been depleted and which is well suited for use as a polymeric flocculant.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: December 22, 1981
    Assignee: Rhone-Poulenc Industries
    Inventors: Jean Neel, Jean Boutin
  • Patent number: 4306031
    Abstract: A weakly acidic cation exchange resin which is obtainable by a reaction of glyoxylic acid and a polyvinyl alcohol cross-linked by cross-linking groups each containing two or more carbon atoms, and has an exchange capacity of 3 meq/g or greater and a swelling volume of 10 ml/g or smaller, as well as a process for producing such cation exchange resin.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: December 15, 1981
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Takaharu Itagaki, Hidenaga Ouchi
  • Patent number: 4305856
    Abstract: A thermoplastic resin composition excellent in heat cycle property which comprises 100 parts by weight of a polycarbonate resin blended or not with an ABS type resin in an amount of not more than 95% by weight based on the combined weight of the polycarbonate resin and the ABS type resin and 0.05 to 3.0 parts by weight of an organo-silicon compound.
    Type: Grant
    Filed: July 9, 1980
    Date of Patent: December 15, 1981
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Hajime Sakano, Mikio Kodama, Toshihiro Shoji
  • Patent number: 4304888
    Abstract: This application is concerned with improved processes for the preparation of polyvinyl imidazolines and polyvinyl tetrahydropyrimidines by reacting polyacrylonitriles with alkylene diamines in the presence of carbon dioxide.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: December 8, 1981
    Assignee: The Gillette Company
    Inventors: Anthony J. Calvert, Eric C. Collingwood
  • Patent number: 4303765
    Abstract: A process for the production of storable 2-chloro-1,3-butadiene/sulphur copolymers by peptization using sulphur containing petizing agents, wherein a compound corresponding to the following general formula:R.sub.1 --S.sub.n --R.sub.1whereinn represents an integer having a value of from 2 to 10, preferably from 3 to 8 and, more particularly, from 4 to 6; and R.sub.1 represents a C.sub.6 -C.sub.14 aryl radical, a C.sub.6 -C.sub.14 aryl-C.sub.1 -C.sub.3 alkyl radical or a heterocycle containing from 1 to 3 hereto atoms, such as N, which may be the same or different and which may optionally be substituted;optionally in combination with a nucleophilic substance, is added to the latex and peptized at from 5.degree. to 100.degree. C. and at pH of from 14 to 3.
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: December 1, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rudiger Musch, Rudiger Schubart, Wilhelm Gobel, Gottfried Pampus
  • Patent number: 4303763
    Abstract: Unsaturated ethylene polymers and processes for preparing and using the same. These polymers are characterized by the process, comprising the step of reacting a saturated, linear polyethylene directly with a diene monomer in the melt phase, the diene monomer having from 1 to about 10 carbon atoms and being present in an amount up to about 5 weight percent of the melt composition. The reaction occurs under mild conditions, including atmospheric pressure and temperatures in the range of between about 250.degree. F. and about 400.degree. F. Moreover, no chemical or irradiant initiation is required. Processes for using these unsaturated polymers in cross-linking and addition reactions are also disclosed, involving reacting such polymers with a saturated, linear polyethylene or with some other polymeric or nonpolymeric functional group susceptable of free-radical addition reaction, the functional component being present in an amount of between about 20 weight percent and about 40 weight percent of the melt phase.
    Type: Grant
    Filed: January 17, 1980
    Date of Patent: December 1, 1981
    Assignee: RESDEV, Inc.
    Inventor: Marvin L. Beasley
  • Patent number: 4302558
    Abstract: A graft copolymer is obtained by graft-polymerizing a vinyl or vinylidene monomer onto a rubber trunk polymer which comprises a polyalkylene oxide monomer comprising 4 to 500 alkylene oxide groups together with an ethylenic unsaturation, and a conjugated diene and/or an alkyl acrylate. This graft copolymer alone or in a mixture thereof with another thermoplastic resin, because of the presence of the polyalkylene oxide monomer unit incorporated in the rubber trunk polymer, provides a resin composition possessing excellent antistatic property, which, practically, is not lowered by washing.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: November 24, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaki Ohya, Akio Kobayashi, Takeo Ogiwara, Yoshikatsu Satake
  • Patent number: 4302568
    Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: November 24, 1981
    Assignee: The General Tire & Rubber Co.
    Inventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal