Patents Examined by William F. Hamrock
  • Metallic salt pre-treatment of crosslinkable co-polymers for eliminating tackiness
    Patent number: 4334043
    Abstract: Crosslinkable polymers and co-polymers are treated with organo-metallic compounds, inorganic metallic salts, or lanthanides prior to crosslinking with free radical organic peroxide initiators in the presence of oxygen. This pre-treatment eliminates tackiness of the surface of the crosslinked polymer making the crosslinked polymer more commercially acceptable.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: June 8, 1982
    Assignee: Pennwalt Corporation
    Inventor: Jurgen Groepper
  • Diene rubber having anti-deteriorating function and process for production thereof
    Patent number: 4334044
    Abstract: By reacting a diene polymer having nitrile groups with an anti-deteriorating agent having at least one polar group selected from the group consisting of amino group and imino group in the presence of a catalyst, a diene rubber can be obtained in which said anti-deteriorating agent is chemically combined to the nitrile groups. Said rubber per se has resistance to deterioration and, at the same time, acts as an anti-deteriorating agent for other diene rubbers. The chemically combined anti-deteriorating agent is not extractable with solvent, so that said rubber has a stable resistance to deterioration and a stable anti-deteriorating action on other diene rubbers.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: June 8, 1982
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Teizo Kotani, Yasuhiko Takemura, Toshio Miyabayashi
  • Process for producing curable vinyl polymer having silyl group
    Patent number: 4334036
    Abstract: A curable vinyl polymer having at least one silyl group of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each a hydrogen or a monovalent hydrocarbon radical having 1 to 10 carbon atoms, X is a group selected from halogen, alkoxy, acryloxy, aminoxy, phenoxy, thioalkoxy and amino groups; and "a" is a whole number equal to 0, 1 or 2, and having molecular weight of between 200 and 30,000, preferably between 1,500 and 25,000; and method for producing same, and products comprised of same; and wherein said method comprises reacting hydrosilane represented by the formula: ##STR2## wherein the same designations as above apply, with a polymer having carbon-carbon double bonds in the terminal or side chains of the polymer in which the main chain is a vinyl polymer having a molecular weight of between 200 and 30,000, and at a temperature of between 50.degree. and 150.degree. C.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: June 8, 1982
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuya Yonezawa, Hisao Furukawa, Masaaki Azuma
  • Thermoplastic elastomer powder coatings
    Patent number: 4330672
    Abstract: A process for preparing fine powder particles of thermoplastic elastomer polymer is disclosed. This process comprises suspending thermoplastic elastomer solids in a poor solvent for the polymer using mild agitation and then admixing this suspension with a non-solvent for the polymer in the presence of high shear mixing. Powder particles having an average diameter of less than about 100 microns are obtained.
    Type: Grant
    Filed: October 28, 1980
    Date of Patent: May 18, 1982
    Assignee: Celanese Corporation
    Inventors: Martin J. Hannon, Rajal M. Vyas, Rudolph R. Schwarz
  • Impact-resistant thermoplastic molding materials with improved stress-cracking resistance
    Patent number: 4330641
    Abstract: Thermoplastic molding materials which contain a copolymer which has been made impact-resistant with a rubber. The copolymer is produced by polymerizing a mixture of a monovinyl-aromatic compound and an acrylic acid derivative or methacrylic acid derivative in the presence of a rubber. The folding materials contain a specific proportion of soft component. The diameter of the particles of the soft component, and the swelling index of the soft component, lie within a specific range, and the tensile strength of the molding material is higher than the yield strength.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: May 18, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Echte, Hermann Gausepohl, Helmut Jenne, Hans Mittnacht
  • Polymer bound multidentate complexes
    Patent number: 4330642
    Abstract: Polymer bound multidentate complexes are prepared by reacting pendant benzyl chloride and benzyl iodide groups on a variety of polymer supports, including crosslinked polystyrene, with 3,3'-iminodiproprionitrile and reducing the nitrile groups by treatment with, for example, a boron hydride-tetrahydrofuran complex to form the amine. The amine is a precursor for other ligand systems; for example, the primary amine groups formed condense with an aldehyde or ketone to yield five coordinate Schiff base ligands. The polydentate amine ligand systems are useful for synthesis of chelating agents for sequestering metal ions from solution for purification or concentration purposes. Metal complexes of these ligands with manganese, iron, cobalt, nickel, copper, and zinc can be prepared which are useful as heterogeneous oxidation catalysts.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: May 18, 1982
    Assignee: University of Illinois Foundation
    Inventors: John H. Gaul, Jr., Russell S. Drago
  • Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof
    Patent number: 4329435
    Abstract: A novel fluorinated copolymer is prepared by copolymerization of a fluorinated olefin with a novel sulfur containing fluorinated vinyl ether of the formula: ##STR1## wherein k is 0 or 1 and l is an integer of 3 to 5, which is prepared from starting materials which are also novel. Said copolymer is useful for preparation of a fluorinated cation exchange membrane having carboxylic acid groups and/or sulfonic acid groups which can be used advantageously in electrolysis of an aqueous alkali metal halide solution with improved electrolysis performance.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: May 11, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Novel fluorinated cation exchange membrane and process for producing the same
    Patent number: 4329434
    Abstract: A novel fluorinated cation exchange membrane containing carboxylic acid groups and sulfonic acid groups, both in the form of a specific pendant structure, the carboxylic acid groups being at least 20% on one surface of the membrane and gradually decreasing toward the innerside of the membrane, which membrane is useful in electrolysis of an aqueous alkali metal halide solution with advantageously stable performance for a long term under more severe operational conditions than those conventionally used. The membrane can be prepared from a novel copolymer of a fluorinated olefin with a novel sulfur containing fluorinated vinylether of the formula: ##STR1## wherein k is 0 or 1, l is an integer of 3 to 5, Z is --S-- or --SO.sub.2 -- and R is C.sub.1 -C.sub.10 alkyl, an aryl, Cl or C.sub.1 -C.sub.10 perfluoroalkyl.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: May 11, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kyoji Kimoto, Hirotsugu Miyauchi, Jukichi Ohmura, Mikio Ebisawa, Toshioki Hane
  • Process for polymerizing dienes
    Patent number: 4329439
    Abstract: The catalyst system disclosed herein comprises a combination or a chelate of a hydrocarbyl lithium compound with a dialkylaminoaldehyde dialkyl acetal having the formula R'.sub.2 N--A--CH(OR.sub.2) wherein R and R' are alkyl groups of 1-3 carbon atoms and A is a divalent aliphatic group of 1-10, preferably 1-3 carbon atoms, with a direct linkage of no more than 3 carbon atoms between the N and the --CH(OR).sub.2 group. This catalyst system is particularly useful in the polymerization of vinyl compounds such as ethylene, propylene, styrene, butadiene, etc. The process for the polymerization of conjugated dienes produces polymers of excellent properties. For example, with butadiene-1,3 and other appropriate conditions, polybutadiene with high percentages of 1,2-polybutadiene structure are produced.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: May 11, 1982
    Assignee: The Firestone Tire & Rubber Company
    Inventor: Delmar F. Lohr, Jr.
  • Polyperoxy compounds
    Patent number: 4328360
    Abstract: A polyperoxyketal compound is provided having at least one carboxy group, a hydrocarbon ester. An example of this compound is n-butyl gamma,gamma-bis(t-butylperoxy)valerate. This polyperoxyketal compound is used as a vulcanizing agent for thermoplastic polymers such as rubber and ethylene-propylene rubber.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: May 4, 1982
    Assignee: Pennwalt Corporation
    Inventors: Wilbur H. McKellin, James R. Kolczynski, Orville L. Mageli, Antonio J. D'Angelo
  • Solution of fluorinated polymer having carboxylic acid salt groups
    Patent number: 4327010
    Abstract: A solution of a fluorinated polymer having groups having the formula--COOMwherein M represents an alkali metal atom or a metal atom in group II a or II b of the periodic table or ammonium group or an amine group in a highly polar organic solvent.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: April 27, 1982
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Manabu Suhara, Kiyotaka Arai
  • Polyethylene terephthalate composition containing aliphatic plasticizer and nucleating agent
    Patent number: 4327007
    Abstract: A polyester composition comprising: the sodium salt of a hydrocarbon acid; and the ester of an aliphatic carboxylic acid having at least one carboxyl group and from 2 to 8 carbon atoms; and an alcohol having one hydroxyl group and from 1 to 10 carbon atoms. The sodium salt is preferably sodium stearate and the ester is preferably di(2-ethyl-hexyl)adipate. The composition can be filled and have impact modifiers.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: April 27, 1982
    Assignee: Allied Chemical Corporation
    Inventors: Nicholas Vanderkooi, Jr., Harold W. Tuller
  • Preparation of anion exchange resins by bromination of vinyl aromatic polymers
    Patent number: 4327191
    Abstract: Process for preparing anion exchange resins comprising polymerizing a vinyl aromatic compound having at least one alkyl group containing about 1 to 3 carbon atoms, alone or mixed with a copolymerizable monomer, optionally in the presence of a mineral support, followed by brominating the alkyl groups of the resulting polymer by means of an N-bromoamide or an N-bromoimide, and then aminating the brominated product obtained. The resulting anion exchange resins are useful in the chemical, pharamaceutical, food, and metallurgical industries.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: April 27, 1982
    Assignee: Rhone-Poulenc Industries
    Inventors: Adrien Dromard, Ramanadin
  • Scorch-safe acceleration of urethane vulcanization of unsaturated rubbers
    Patent number: 4324870
    Abstract: Improvements in scorch time of natural and synthetic rubber compositions in urethane crosslinking systems employing alkyl derivatives of dithiophosphoric acid as the scorch delay cure catalyst having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are alkyl having at least 12 carbon atoms, or connected together and forman alkylene group having at least 2 carbon atoms, and R.sub.3 is hydrogen or phenethyl.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: April 13, 1982
    Assignee: Uniroyal, Inc.
    Inventors: Yong S. Rim, Walter Nudenberg, Arnold N. Johnson
  • Flowable polyacrylonitrile power treated with essentially pure solvent
    Patent number: 4324707
    Abstract: A flowable polymeric extrusion powder consisting essentially of acrylonitrile polymer particles is provided at low temperature treated with a non-sticking amount of solvent. Sufficient solvent can be added to dissolve the polymer at elevated temperature, for instance, more than 120 parts by weight of dimethyl sulfoxide solvent can be added per hundred parts of dry polymer below ambient temperature.
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: April 13, 1982
    Assignee: Mobil Oil Corporation
    Inventor: Gordon P. Hungerford
  • Vinylidene chloride polymer microgel powder lacquer coating composition and substrates coated therewith
    Patent number: 4324714
    Abstract: A lacquer coating composition containing a crosslinked vinylidene chloride polymer microgel powder which is recovered from a latex obtained by emulsion polymerizing about 85 to 92 parts by weight of vinylidene chloride, about 8 to 15 parts by weight of a copolymerizable ethylenically unsaturated comonomer, and a minor amount of a copolymerizable crosslinking polyfuntional comonomer. Coatings prepared from such lacquers have excellent barrier and heat-sealing properties.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: April 13, 1982
    Assignee: The Dow Chemical Company
    Inventors: Dale S. Gibbs, James F. Sinacola, Dan E. Ranck
  • Quaternization process for ion exchange membranes
    Patent number: 4322501
    Abstract: A process is disclosed for quaternizing reactive substituent haloalkyl groups in hollow fiber polymer membranes wherein such haloalkyl groups are reacted with an amine quaternizing agent in the presence of an electrolyte compound and, preferably, in the presence of a cationic quaternary ammonium halide surfactant. In addition, there is disclosed a process of quaternizing the reactive haloalkyl groups in anisotropic hollow fiber polymer membranes by contacting and permeating a solution of an amine quaternizing agent from the surface of the membrane which is to be exposed to a dialysis feed solution.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: March 30, 1982
    Assignee: Monsanto Company
    Inventors: Cheng H. Lee, Jay M. S. Henis
  • Fast curing phosphate modified anaerobic adhesive compositions
    Patent number: 4322509
    Abstract: The precipitation from solution of amine phosphate salts is materially inhibited by incorporating at least one carboxylated nitrile elastomer into compositions containing at least one tertiary dimethylaryl amine and at least one unsaturated organic monoester of phosphoric acid.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: March 30, 1982
    Assignee: Lord Corporation
    Inventor: Denis J. Zalucha
  • Reactive polyester resin-plasticizer composition
    Patent number: 4322505
    Abstract: A reactive polyester resin composition comprising a polyester resin having ethylenically unsaturated terminal groups, and a reactive, aliphatic plasticizer compatible with the resin and having ethylenically unsaturated terminal groups. By virtue of the terminal ethylenic unsaturation, the composition can be cross-linked with, e.g., styrene to form a tough, flexibilized, corrosion resistant polymer. The high level of corrosion resistance is maintained notwithstanding the impressive degree of flexibility imparted to the composition.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: March 30, 1982
    Assignee: Phillips Petroleum Company
    Inventor: Eugene F. Jacobs
  • Nitrile barrier resins and process for their manufacture
    Patent number: 4322510
    Abstract: Impact-resistant polymers having excellent color, clarity and low permeability to gases and vapors are prepared by polymerizing in a specified manner an olefinically unsaturated nitrile such as acrylonitrile, an ester of an olefinic acid such as methyl acrylate, or a vinyl ester such as vinyl acetate, and a vinyl aromatic monomer such as styrene optionally in the presence of a diene rubber.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: March 30, 1982
    Assignee: The Standard Oil Company
    Inventors: William J. Miloscia, John A. Turnbaugh, Brandford E. Giddings