Patents Examined by William F. Hamrock
  • Patent number: 4302548
    Abstract: An ion exchange resin bed capable of hydraulic segregation into discrete zones of ion exchange resins having different ion exchange functionalities, the resins being produced by functionalizing fractions of a single batch or lot of precursor copolymer which have been segregated on the basis of differing hydraulic densities of the different sized particles, and the method for producing the same.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: November 24, 1981
    Assignee: Rohm and Haas Company
    Inventor: James S. Clovis
  • Patent number: 4302559
    Abstract: Copolymers of alpha-methylstyrene-type monomers and conjugated diene monomers are prepared by polymerizing an alpha-methylstyrene monomer using a first polar activator, adding a small amount of a conjugated diene monomer to cap the block of alpha-methylstyrene-type monomer polymer, and further adding a conjugated diene monomer and polymerizing with a second polar activator effective for copolymerization of residual alpha-methylstyrene-type monomer. The resulting copolymer can be coupled to form linear or radial block copolymers.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: November 24, 1981
    Assignee: Phillips Petroleum Co.
    Inventor: Floyd E. Naylor
  • Patent number: 4301259
    Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with linear organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: November 17, 1981
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Joginder Lal, Michael L. Senyek
  • Patent number: 4301258
    Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with cyclic organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: November 17, 1981
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Joginder Lal, Michael L. Senyek
  • Patent number: 4299922
    Abstract: Charged anion exchange resins, which are used for the removal of strong acid ions from water, are regenerated to their bicarbonate form by contacting them with an aqueous treating medium containing calcium carbonate and carbon dioxide.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: November 10, 1981
    Assignee: Kernforschungszentrum Karlsruhe, Gmbh
    Inventors: Wolfgang Holl, Karl-Ekkehard Sester, Siegfried H. Eberle, Heinrich Sontheimer
  • Patent number: 4298639
    Abstract: The invention provides a stable polymeric additive useful for improving the wet strength of a cellulosic substrate. The additive is a water-soluble cationic thermosetting polymer incorporating a plurality of extralinear glycidyl quaternary ammonium groups. The invention also comprises a method of making such an additive.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: November 3, 1981
    Assignee: Monsanto Company
    Inventor: Donald N. Van Eenam
  • Patent number: 4298715
    Abstract: A process for the production of a wet strength resin comprising polymerizing a diallylamine salt, separating unreacted monomer from the reaction mixture, reacting the diallylamine polymer with an epihalohydrin and finally adding an acid to stabilize the resin solution so obtained.
    Type: Grant
    Filed: March 1, 1978
    Date of Patent: November 3, 1981
    Assignee: Monsanto Company
    Inventor: Donald N. Van Eenam
  • Patent number: 4298710
    Abstract: An antistatic resin composition comprises 100 parts of a nitrile copolymer comprising 7 to 100% of a nitrile graft copolymer with a graft ratio of 4 to 50% obtained by graft-polymerizing a monomer mixture of a specific composition onto a rubber trunk polymer predominantly comprising a conjugated diolefin and/or an acrylate, and 0 to 93% of a nitrile random copolymer of a specific composition; and 0.05 to 10 parts of a surfactant added thereto. This antistatic resin composition, wherein the rubber trunk polymer forms a bridge structure, not only has, per se, an excellent antistatic property but also an antistatic property which undergoes substantially no change upon washing, for example, with water.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: November 3, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaki Ohya, Akio Kobayashi, Takeo Ogiwara, Yoshikatsu Satake
  • Patent number: 4298699
    Abstract: A fluorinated copolymer having ion-exchange group is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having a functional group of carboxylic acid group or a group which can be converted to carboxylic acid group in an aqueous medium in the presence of a polymerization initiator source. The fluorinated copolymer obtained by the copolymerization is treated with an alcohol at higher than 20.degree. C. in the form of particles before a molding. The melt flowability of the fluorinated copolymer is improved.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: November 3, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Tatsuro Asawa, Haruhisa Miyake, Masami Yamashita, Yoshio Sugaya
  • Patent number: 4298713
    Abstract: A process for producing an ethylene copolymer having a density of from 0.900 to 0.945 g/cm.sup.3 by copolymerizing in two steps a predominant amount of ethylene with a minor amount of an alpha-olefin containing at least 3 carbon atoms at room temperature to not more than about 100.degree. C. under a pressure of about 1 to about 100 kg/cm.sup.2 in the presence of a catalyst composed of (A) a titanium catalyst component supported on a magnesium compound and (B) an organoaluminum compound; characterized in that said copolymerization is carried out in(i) a first step where about 0.01 to about 50 g, per gram of the titanium catalyst component (A), of the alpha-olefin containing at least 3 carbon atoms is polymerized, said catalyst further comprising an organic acid ester (C), and then(ii) a second step where the final product of ethylene copolymer is formed in an amount more than about 100 times the weight of the polymer formed in the first step.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: November 3, 1981
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Yoshinori Morita, Akinori Toyota, Norio Kashiwa
  • Patent number: 4297452
    Abstract: A novel process is disclosed for increasing the amount of grafted polymer formed during the production of polyamide-modified macroporous polystyrene/divinylbenzene cross-linked beads. Greater selectivity for oxazolination and/or oxazination (grafting) of the chloromethylated polystyrene (CMPS) beads over homopolymer formation is achieved by forming an iodized cross-linked vinyl-addition polymer which is then contacted with an excess of oxazoline or oxazine until up to about 50 percent of said oxazoline or oxazine monomer is reacted. Subsequent hydrolysis of these polyamide-modified resins produces polyamine anion-exchange resins which exhibit greater than 2 times the weak base capacities of conventional anion-exchange resins.
    Type: Grant
    Filed: January 4, 1980
    Date of Patent: October 27, 1981
    Assignee: The Dow Chemical Company
    Inventors: Robert J. De Koch, Gerald C. Kolb, James W. Lalk
  • Patent number: 4297464
    Abstract: Orthoesters are used to couple living homopolymers of monovinylarenes.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: October 27, 1981
    Assignee: Phillips Petroleum Co.
    Inventor: William J. Trepka
  • Patent number: 4297445
    Abstract: A method for continuous production of block copolymers having a block of propylene homopolymer and blocks of polymer of ethylene. The block copolymers produced thereby. In a first stage a first reaction mixture containing a polymer of ethylene is produced with continuous transfer of a portion of this reaction mixture along with propylene monomer and a catalyst modifier into a second stage in which a block copolymer having a block of propylene homopolymer and blocks of polymer of ethylene is produced. In preferred embodiments the polymer of ethylene is ethylene homopolymer and/or ethylene-propylene random copolymer.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: October 27, 1981
    Assignee: Phillips Petroleum Co.
    Inventors: James N. Short, Donald D. Norwood
  • Patent number: 4297450
    Abstract: Hot melt type traffic paint compositions contain as binders partially ring-hydrogenated resins derived by hydrogenating from 20 to 70% of the aromatic rings of an aromatic hydrocarbon resin obtainable by polymerization in the presence of a Friedel-Crafts catalyst of fractions prepared so as to have a conjugated diolefin content of not more than 1.0 wt % and in a ratio of not more than 3.0% with respect to the total amount of polymerizable ingredients and a total content of indene and its alkyl derivatives of not more than 4.0 wt % and in a ratio of not more than 12.0% with respect to the total amount of polymerizable ingredients, said fractions obtained by distillation of cracked oil fractions which have boiling points in the range from 140.degree. to 220.degree. C. and are prepared by cracking of petroleum. These traffic paint compositions provide a favorable antiweathering property, heat resistance and flow characteristics.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: October 27, 1981
    Assignee: Nippon Oil Co. Ltd.
    Inventors: Hisatake Sato, Masaharu Makino, Hideo Hayashi
  • Patent number: 4295844
    Abstract: An improved process for the thermal stabilization of an acrylic fibrous material or film is provided. The fibrous material or film initially is contacted with aniline provided at an elevated temperature. Such aniline treatment (as described) has been found to render the fibrous material or film capable of undergoing thermal stabilization on a more expeditious basis. Subsequently the resulting fibrous material or film is heated in an oxygen-containing atmosphere at a temperature of approximately 200.degree. to 360.degree. C. until a stabilized fibrous material or film is formed.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: October 20, 1981
    Assignee: Celanese Corporation
    Inventor: Steven B. Warner
  • Patent number: 4296151
    Abstract: Surfaces of articles formed from (1) normally solid polymers of aliphatic mono-1-olefins and (2) elastomeric and resinous polymers of conjugated dienes and vinyl-substituted aromatic compounds are conditioned by contact with a fluorine-containing gas under conditions and for a period of time sufficient to render the surface receptive to adhesives, coatings, paints, inks, decorations, and the like. The fluorine-containing gas can be pure or admixed with up to about 99 volume percent inert gas.
    Type: Grant
    Filed: June 12, 1980
    Date of Patent: October 20, 1981
    Assignee: Phillips Petroleum Company
    Inventor: Harold D. Boultinghouse
  • Patent number: 4296008
    Abstract: A sealant composition possessing an excellent balance of properties including good tack, low melt viscosity and a cohesive failure mechanism in the 180.degree. peel test comprises a selectively hydrogenated monoalkenyl arene/conjugated diene block copolymer component having certain block molecular weights, tackifying resin, plasticizers and silane coupling agent.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: October 20, 1981
    Assignee: Shell Oil Company
    Inventors: David J. St. Clair, Earle E. Ewins, Jr.
  • Patent number: 4294943
    Abstract: A process for preparing a fluorine-containing polymer having carboxyl groups, which comprises subjecting a fluorine-containing polymer having sulfonyl halide groups bonded to it to an oxidation reaction at a temperature of not more than 250.degree. C.; and a process for electrolysis, using as a diaphragm a member of the polymer obtained by the above process.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: October 13, 1981
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Yasuharu Onoue, Toshikatsu Sata, Akihiko Nakahara, Junichi Itoh
  • Patent number: 4293661
    Abstract: A reaction product of an acrylate resin containing glycidyl groups and secondary mono-amines containing hydroxyl groups, obtained by reacting of said acrylate resin of copolymerized, statistically distributed units of(A) 3 to 30% by weight of the glycidyl ester of (meth)acrylic acid and/or of vinyl glycidyl ether;(B) 0 to 20% by weight of at least a hydroxy C.sub.2 -C.sub.4 alkyl ester of (meth)acrylic acid;(C) 5 to 80% by weight of at least an optionally substituted styrene, methyl methacrylate, (meth)acrylonitrile or any mixture thereof;(D) 5 to 70% by weight of an acrylic acid C.sub.1 -C.sub.12 -alkyl-or of a methacrylic acid C.sub.2 -C.sub.12 -alkyl ester or any mixture thereof; and(E) 0 to 10% by weight of an .alpha.,.beta.-mono-olefinically unsaturated monocarboxylic or dicarboxylic acid containing from 3 to 5 carbon atoms or of a maleic acid C.sub.2 -C.sub.14 -mono ester or any mixture thereof,with at least one secondary mono-amine containing at least one secondary hydroxyl group.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: October 6, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Probst, Michael Sonntag, Gunter Kolb
  • Patent number: 4292228
    Abstract: Physical properties particularly including tensile modulus and heat-distortion temperature of high nitrile copolymer resins are improved by including therein a processing aid, such as tetra chloro phthalic anhydride, and a filler material, such as clay.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: September 29, 1981
    Assignee: The Standard Oil Company
    Inventor: Ralph E. Isley