Patents Examined by Eugene C. Rzucidlo
  • Patent number: 4139501
    Abstract: Flexible polyurethane foam having reduced tendency to form burning embers when it is ignited and burned is provided by incorporating into the reaction mixture before foaming a derivative of melamine wherein one or more hydrogens have been replaced by hydroxymethyl and/or lower alkoxymethyl groups.In one embodiment, flexible polyurethane foams of increased flame retardance are also provided, by also incorporating a halogenated phosphorus ester into the reaction mixture before foaming.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: February 13, 1979
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Bernard Rudner, Thomas M. Noone, Peter D. Pauly
  • Patent number: 4132690
    Abstract: Adhesive polyamide resin compositions, such as hot melts, containing conventional components are improved by inclusion of a normally solid, homogeneous copolymer of ethylene and an unsaturated carboxylic acid having an acid number of at least about 100 and a number average molecular weight between 500 and 5,000.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: January 2, 1979
    Assignee: Allied Chemical Corporation
    Inventors: Tjeerd Eernstman, Christopher J. Auger, Emile M. Devroede
  • Patent number: 4128516
    Abstract: In the process for the gentle degasification of coagulation-sensitive PVC latices in a confined space under reduced pressure and stirring at elevated temperatures with steam injection onto the latex surface, the improvement consisting essentially of conducting said degasification at a selected temperature from C to C at a pressure corresponding to the boiling pressure of water at the selected temperature, stirring said latex by an inclined stirrer whereby a rolling action of said latex in said confined space is effected and introducing said steam into the gas space above said latex but directed along the surface of the confined space.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: December 5, 1978
    Assignee: Wacker-Chemie GmbH
    Inventors: Hans Geschonke, Rainer Rompeltien, Wolfgang Rummel
  • Patent number: 4128519
    Abstract: A water-based coating composition which may be air dried to form durable, fire resistant coatings includes dispersed vinylidene fluoride polymer particles, emulsified liquid epoxy resin and a dissolved emulsifying agent for said epoxy resin which agent is also capable of rapidly curing the epoxy resin upon removal of the water from the composition.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: December 5, 1978
    Assignee: Pennwalt Corporation
    Inventors: Edward J. Bartoszek, Alkis Christofas
  • Patent number: 4128520
    Abstract: Terpolymer emulsions comprising (1) an .alpha.,.beta.-unsaturated carboxylic acid (2) an alkyl ester of an .alpha.,.beta.-unsaturated carboxylic acid, and (3) an amide of an .alpha.,.beta.-unsaturated carboxylic acid or styrene or a derivative thereof of the formula ##STR1## in which R.sub.2 is hydrogen, methyl or ethyl are useful as thickening agents, particularly in butadiene-styrene latices.
    Type: Grant
    Filed: February 18, 1977
    Date of Patent: December 5, 1978
    Assignee: GAF Corporation
    Inventors: Eugene S. Barabas, Andrew Klein, Dru W. Alwani
  • Patent number: 4128530
    Abstract: 2-Mercapto phenol and/or 4-mercapto phenol are reacted with compounds containing olefinic unsaturation, for example, styrene and isobutylene, to form alkylthio phenolic antioxidants such as 2,6-di-tert.butyl-4-(tert.butylthio) phenol and 2,6-di(.alpha.-phenylethyl)-4-(.alpha.-phenylethylthio) phenol.
    Type: Grant
    Filed: January 25, 1974
    Date of Patent: December 5, 1978
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Kirkwood S. Cottman
  • Patent number: 4128601
    Abstract: Low pressure molding compositions comprising a thermosetting resin and a thermoplastic resin are thickened with a combination thickening agent within a specific concentration range to retard rapid initial thickening of the molding compositions.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: December 5, 1978
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: John J. McCluskey
  • Patent number: 4127542
    Abstract: A storage stable polyester based polyurethane composition is provided which contains from about 0.05 to 0.75 percent by weight of an organic epoxide compound which has a molecular weight of not less than 60.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: November 28, 1978
    Assignee: American Cyanamid Company
    Inventors: Samuel Kaizerman, Ajaib Singh
  • Patent number: 4127460
    Abstract: A radiation-curable aqueous emulsion coating composition which cures to provide a nonadherent surface is provided by emulsifying droplets of liquid alkyl hydrogen polysiloxane in water, the water having dispersed therein a radiation-curable polyethylenically unsaturated tertiary amine, such as an amine polyacrylate, at least partially neutralized with a solubilizing acid. The aqueous emulsion preferably includes a photosensitizer rendering the composition curable with ultraviolet light.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: November 28, 1978
    Assignee: DeSoto, Inc.
    Inventors: Joseph E. Gaske, Eugene S. Packer, George J. England
  • Patent number: 4126527
    Abstract: Relatively water insoluble hydroxy functional monoethylenic polyethers or polyesters of monoethylenic carboxylic acids or hydroxy aklys esters thereof are formed by adducting the monoethylenic acid or its hydroxy ester with an anhydride selected from monoepoxides, lactones, or mixtures thereof in the presence of a Lewis acid catalyst, such as BF.sub.3 etherate, at a temperature below that at which the unsaturation is consumed, typically about C. These adducts are of low volatility and of low toxicity and can be radiation cured in admixture with polyacrylates to form coatings having improved resistance to elevated temperature exposure.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: November 21, 1978
    Assignee: Mobil Oil Corporation
    Inventor: Marvin L. Kaufman
  • Patent number: 4125505
    Abstract: Poly (oxypropylene-oxyethylene) polyols containing predetermined amounts of both internal and cap ethylene oxide are employed to form polymer/polyols which exhibit enhanced compatibility for low molcular weight chain extenders such as, for example, ethylene glycol and butanediol. Polyurethane elastomers having satisfactory modulus characteristics are prepared from the polymer/polyol-chain extender mixture, and the resulting elastomers possess unexpected hydrolytic stability.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: November 14, 1978
    Assignee: Union Carbide Corporation
    Inventors: Frank E. Critchfield, Richard M. Gerkin, Leslie E. Hawker
  • Patent number: 4124547
    Abstract: A method of forming an impression sleeve on an impression packer for use in obtaining impressions in wells, the impression sleeve being formed of a mixture of partially cured synthetic nitrile rubber, natural rubber smoked sheet, silica powder and rubber processing oil.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: November 7, 1978
    Assignee: Chevron Research Company
    Inventors: Stanley O. Hutchison, Glenn W. Anderson, Gordon L. Newby
  • Patent number: 4123403
    Abstract: Aqueous polymer microsuspensions having controlled particle size and narrow particle size distribution are prepared by a continuous process comprising the steps of (a) forming a heterogeneous composition having a discontinuous aqueous phase and a continuous polymer phase; and (b) converting the resulting polymer-continuous heterogeneous composition to a water-continuous heterogeneous composition.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: October 31, 1978
    Assignee: The Dow Chemical Company
    Inventors: Gregory L. Warner, Douglas E. Leng
  • Patent number: 4122056
    Abstract: Finely-divided dispersed solids are prepared by the emulsion polymerization in the presence of a free radical catalyst of a major amount of an ethylenically unsaturated monomer or mixture of monomers and a minor amount of a hydroxy-terminated organic compound having from one to eight hydroxyl groups, an oxyethylene content of from about 15 to 80 weight percent, a hydroxyl equivalent weight of from 250 to 10,000 and containing a polymerizable carbon-to-carbon double bond. The resulting polymeric solids are particularly useful in the preparation of reinforced polymer compositions.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: October 24, 1978
    Assignee: BASF Wyandotte Corporation
    Inventors: Gerhard Gustav Ramlow, Louis Celeste Pizzini, John Thomas Patton, Jr., John Richard Murphy, John Eugene Davis
  • Patent number: 4122052
    Abstract: An emulsion composition prepared by the emulsion polymerization of a polymerizable vinyl monomer in the presence of an emulsifier characterized in that the emulsifier is a neutralized copolymer of (A) a monomer prepared by being allowed at least one glycidyl ester of arcylic acid and methacrylic acid to react with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) .alpha.,.beta.-ethylenically unsaturated acid and (C) an unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: October 24, 1978
    Assignee: Kansai Paint Company, Limited
    Inventors: Tetsuo Aihara, Yasuharu Nakayama, Yoshio Yamashita, Tadashi Watanabe, Isao Toyomoto
  • Patent number: 4121025
    Abstract: The invention provides means for controlling the degradation of vinyl polymers by incorporating therein at least one non-ionic organo-soluble complex of a metal having an atomic number from 22 to 29, 40 to 47 or 57 to 79, the complex being activatable by light and optionally heat to give a more photo-oxidatively active form of the said metal, in an amount such as to cause degradation of the polymer at the end of the desired life of the composition.
    Type: Grant
    Filed: July 20, 1971
    Date of Patent: October 17, 1978
    Inventor: Gerald Scott
  • Patent number: 4120837
    Abstract: Molding compositions, based on unsaturated polyester resins, unsaturated monomers, catalysts, inorganic and/or organic fillers and/or reinforcing agents, dyestuffs and/or pigments, lubricants and optionally inhibitors, containing a siloxane of the formula ##STR1## wherein A IS 0 OR 1b is a number from 1 to 500, provided that when a is 0, b must be equal to or greater than 3 and the compound is a cyclosiloxane,R.sup.1 is hydrogen, alkyl or trimethylsilyl,R.sup.2 is alkyl of 8 to 32 carbon atoms, --R.sup.4 OCOR.sup.5, or --R.sup.4 OR.sup.6, where R.sup.4 is a bivalent radical, R.sup.5 is alkyl of 12 to 22 carbon atoms and R.sup.6 is alkyl of 8 to 22 carbon atoms, provided that up to 80 mole % of the above-mentioned radicals defining R.sup.2 may be methyl and provided further that at least one R.sup.2 per molecule is other than methyl, andR.sup.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: October 17, 1978
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Werner Schafer, Hans-Albrecht Scholz, Siegfried Wilhelm
  • Patent number: 4119593
    Abstract: High solids, low energy cure coating compositions of aliphatic polyepoxides, monocarboxylic acid compounds as initiator and stannous salts as catalysts.
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: October 10, 1978
    Assignee: Union Carbide Corporation
    Inventors: Oliver Wendell Smith, Joseph Victor Koleske
  • Patent number: 4119602
    Abstract: Disclosed herein are aqueous dispersions of blocked hydrophilic polyether urethane prepolymers and codispersions thereof with synthetic polymer latices. Also disclosed are methods of preparing the dispersions as well as polyurethane coatings and films prepared therewith. The dispersion/codispersions are characterized by good mechanical stability and resistance to freeze - thaw cycles. Coatings, films and impregnated articles prepared therefrom possess good physical properties. Coatings and films prepared from codispersions containing acrylic latex possess physical properties, chemical solvent resistance, etc. comparable to solvent-based urethanes.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: October 10, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Irving E. Isgur, Robert R. Alexander, Thomas P. Moy
  • Patent number: 4119594
    Abstract: According to a preferred practice of the invention, thermoset polyurethanes are molded from a mixture of solid particles of hydroquinone di-(beta-hydroxyethyl)ether (HQEE) and zinc stearate dispersed in a liquid mixture of a polyether polyol and a liquid form of diphenylmethane diisocyanate. The use of the HQEE chain extender and the zinc stearate catalyst provides a unique one-shot molding mixture that is relatively unreactive at room temperature, but polymerizes and cures rapidly upon heating. It has a pot life of at least several hours and is suitable for use in injection molding equipment generally used in processing thermoplastic material.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: October 10, 1978
    Assignee: General Motors Corporation
    Inventors: Stanley A. Iobst, Howard W. Cox