Patents Examined by J. Ziegler
  • Organic pigments
    Patent number: 4403063
    Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: September 6, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Process for the preparation of a modified hydrocarbon resin
    Patent number: 4401791
    Abstract: A process for the preparation of a modified hydrocarbon resin free of indene. This resin is suitable for use as a binder in a printing ink. It is made from a hydrocarbon resin which is relatively unsuitable for use as a binder in a printing ink.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: August 30, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Kurt Hultzsch, Albert Rudolphy
  • Polymeric adducts with pendant polymerizable double bonds, their preparation and use as reactive thickeners in improved anaerobic compositions
    Patent number: 4401793
    Abstract: Novel stable anaerobic compositions are prepared which contain, as a novel reactive thickener, a polymerizable polymeric adduct having pendant double bonds which is dissolved in a polymerizable monomeric diluent. The anaerobic compositions show improved performance properties. The thickener is prepared by reacting an anhydride-containing polymer with an excess of a C.sub.2 -C.sub.5 hydroxyalkyl acrylate or methacrylate (e.g. hydroxyethyl and hydroxypropyl methacrylate), optionally in the presence of (meth)acrylate monomers which are not reactive with the anhydride groups of the polymer and which act as an additional diluent. The polymer may be prepared by conventional free radical polymerization techniques using maleic, citraconic, and/or itaconic anhydride and an ethylenically unsaturated monomer (e.g. C.sub.1 -C.sub.10 alkyl acrylates or methacrylates or styrene).
    Type: Grant
    Filed: September 4, 1981
    Date of Patent: August 30, 1983
    Assignee: National Starch And Chemical Corporation
    Inventors: Wen B. Chiao, Dilip K. Ray-Chaudhuri
  • Thermosetting resinous binder compositions, their preparation, and use as coating materials
    Patent number: 4401774
    Abstract: A thermosetting binder composition for coating, comprising:(I) (1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g;(2) A non-acidic polyester of a polycarboxylic acid crosslinking agent having more than one .beta.-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons.For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: August 30, 1983
    Assignee: Shell Oil Company
    Inventors: Petrus G. Kooymans, Johannes J. M. H. Wintraecken, Werner T. Raudenbusch, Josepha M. E. Seelen-Kruijssen, Gerardus C. M. Schreurs
  • Comfort additive for acrylic fibers
    Patent number: 4399091
    Abstract: A process for improving the comfort of garments made from acrylonitrile polymer filaments by incorporating in the filaments, a polymer obtained by cross-linking a polyether with an isocyanate.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: August 16, 1983
    Assignee: BASF Wyandotte Corporation
    Inventors: Stephen E. Eisenstein, Edward M. Dexheimer
  • Thermosetting resinous binder compositions, their preparation and use as coating materials
    Patent number: 4397990
    Abstract: A thermosetting binder composition for coating, comprising:(1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g;(2) A non-acidic polyester of a polycarboxylic acid cross-linking agent having more than one .beta.-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons.For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: August 9, 1983
    Assignee: Shell Oil Company
    Inventors: Petrus G. Kooymans, Johannes J. M. H. Wintraecken, Werner T. Raudenbusch, Josepha M. E. Seelen-Kruijssen, Gerardus C. M. Schreurs
  • Denture-base resin composition and method for using the same
    Patent number: 4398007
    Abstract: The denture-base resin composition of the present invention contains a liquid component obtained by incorporation of 0.5 to 20% by weight of a particular silane compound and 0.5 to 10% by weight of a unsaturated carboxylic acid into a methyl methacrylate monomer. Examples of the silane compound used in the present invention includes .gamma.-glycidoxypropyltrimethoxysilane, .gamma.-glycidoxypropyltriethoxysilane, .gamma.-methacryloxypropyltriethoxysilane, etc. The liquid component may be mixed with a methyl methacrylate polymer in a mixing ratio (by weight) of 1:3 to 3:1.
    Type: Grant
    Filed: October 22, 1980
    Date of Patent: August 9, 1983
    Assignee: G-C Dental Industrial Corp.
    Inventors: Takao Kubota, Shigenobu Kusakai
  • Compositions
    Patent number: 4397982
    Abstract: Novel thermoplastic molding compositions of a polycarbonate, a linear low density polyolefin, a multiphase composite interpolymer of an acrylate and a methacrylate are disclosed which have good impact strengths and reprocessability.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: August 9, 1983
    Assignee: General Electric Company
    Inventors: Omar M. Boutni, Ping Y. Liu
  • Eraser and process for its manufacture
    Patent number: 4393022
    Abstract: An eraser based on polyvinyl chloride having particles of a crosslinked polymeric natural or synthetic rubber embedded in the polyvinyl chloride structure. Such erasers have high strength and good aging resistance. Additionally, conventional softeners in the eraser do not undergo significant migration and consequently, the eraser does not smudge. A process for manufacturing the eraser is also disclosed.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: July 12, 1983
    Assignee: J. S. Staedtler
    Inventor: Werner Handl
  • Polymeric blends
    Patent number: 4393170
    Abstract: A polymeric blend containing (a) copolymer of lactone with conjugated diene or monovinylarene or both conjugated diene and monovinylarene, (b) acrylic ester polymer, and (c) coumarone-indene resin. A polymeric blend as described above also containing (d) conjugated diene monovinylarene teleblock copolymer.
    Type: Grant
    Filed: July 22, 1981
    Date of Patent: July 12, 1983
    Assignee: Phillips Petroleum Company
    Inventor: John R. Haws
  • Polyvinyl butyral ink formulation
    Patent number: 4391867
    Abstract: Ink formulation based on polyvinyl butyral and useful for printing polyvinyl butyral sheeting provides both improved blocking and improved glass adhesion through increased hydroxyl content in the polyvinyl butyral of the ink formulation.
    Type: Grant
    Filed: February 8, 1980
    Date of Patent: July 5, 1983
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventors: Burton N. Derick, Robert E. Moynihan, Jon W. Wolfe
  • Flame retardant polycarbonate composition
    Patent number: 4391935
    Abstract: An improved flame retardant polycarbonate composition of an aromatic carbonate polymer in admixture with an organic alkali metal salt or an organic alkaline earth metal salt or mixtures thereof, which composition has in admixture therewith a fluorinated polyolefin.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: July 5, 1983
    Assignee: General Electric Company
    Inventors: Charles A. Bialous, John B. Luce, Victor Mark
  • Novel alloy compositions and products
    Patent number: 4389444
    Abstract: New polymer alloy compositions of a thermoplastic-elastomeric block copolymer and copolyester, and films prepared therefrom are described. The films have superior properties, including resistance to attack by organic solvents.
    Type: Grant
    Filed: April 14, 1981
    Date of Patent: June 21, 1983
    Assignee: Johnson & Johnson
    Inventor: Ralf Korpman
  • Blends of polyphenylene ether resins and styrene-tert-butylstyrene copolymers
    Patent number: 4389511
    Abstract: Homogeneous blends of polyphenylene ether resin and copolymers of styrene and 4-tert-butylstyrene are described. Rubber modifiers can be included in the copolymer or the blend. The blends are moldable into highly ductile articles having higher heat distortion temperature.
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: June 21, 1983
    Assignee: General Electric Company
    Inventors: Glenn D. Cooper, Arthur Katchman
  • Polyethylene terephthalate blends
    Patent number: 4388446
    Abstract: Thermoplastic compositions comprising, in intimate admixture, 10 to 90 weight percent of polyethylene terephthalate and from 90 to 10 percent of a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic imide. These compositions display desirable thermal properties, particularly elevated heat deflection temperatures.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: June 14, 1983
    Assignee: Ethyl Corporation
    Inventors: Edwin D. Hornbaker, Jesse D. Jones
  • Thermoplastic elastomer blends with bitumen
    Patent number: 4387175
    Abstract: Thermoplastic elastomer compositions of the present invention comprise a blend of from about 10 to about 50 parts by weight of a crystalline 1-olefin polymer, from about 80 to about 15 parts by weight of a styrene-butadiene rubber, and from about 5 to about 50 parts by weight of bitumen. The thermoplastic blends have unexpectant increases in properties, especially tear strength, tensile strength, high temperature (100.degree. C.) tear strength, and smooth surfaces when injection molded. Moreover, the bitumen lowers the injection molding pressure, thus enabling larger parts to be molded. The compositions, which may be partially cured, also have excellent aging properties. The compositions are a true thermoplastic in that they can be repeatedly processed and yet maintain their good physical properties.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: June 7, 1983
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Georg G. A. Bohm, Lee E. Vescelius, Gary R. Hamed
  • Method for the preparation of alkenyl aromatic monomer nitrile copolymer reinforced with rubbery copolymer
    Patent number: 4387179
    Abstract: In the mass polymerization of an alkenyl aromatic nitrile rubber polymer blend such as ABS by the mass polymerization technique, improved physical properties are obtained in the resultant polymer by the incorporation of water into the mass polymerization process. During polymerization the pressure of the system must be maintained sufficiently high to prevent vaporization of the water.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: June 7, 1983
    Assignee: The Dow Chemical Company
    Inventor: Yun-Chung Sun
  • Thermoplastic molding materials containing polymers with polyphenylene ether groups and styrene polymers
    Patent number: 4387189
    Abstract: Thermosplastic molding materials which contain styrene polymers and polyphenylene ethers whose phenolic hydroxyl groups have been reacted with reactive copolymers.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: June 7, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Juergen Hambrecht, Herbert Naarmann, Hans Schuster
  • Thermoplastic elastomer blends with bitumen
    Patent number: 4385142
    Abstract: Thermoplastic elastomer compositions of the present invention comprise a blend of from about 10 to about 50 parts by weight of a crystalline 1-olefin polymer, from about 80 to about 15 parts by weight of a styrene-butadiene rubber, and from about 5 to about 50 parts by weight of bitumen. The thermoplastic blends have unexpectant increases in properties, especially tear strength, tensile strength, high temperature (100.degree. C.) tear strength, and smooth surfaces when injection molded. Moreover, the bitumen lowers the injection molding pressure, thus enabling larger parts to be molded. The compositions, which may be partially cured, also have excellent aging properties. The compositions are a true thermoplastic in that they can be repeatedly processed and yet maintain their good physical properties.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: May 24, 1983
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Georg G. A. Bohm, Lee E. Vescelius, Gary R. Hamed
  • Impact resistant vinyl ester resin and process for making same
    Patent number: RE31310
    Abstract: Vinyl ester resins with improved impact resistance and other benefits and advantages may be obtained by a process modification wherein up to 20 percent of the unsaturated monocarboxylic acid, which is reacted with a polyepoxide, is replaced by an equivalent amount of a liquid carboxy terminated polydiene rubber capable of reacting with epoxy groups to form a chemically bound molecule. .Iadd.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: July 12, 1983
    Assignee: The Dow Chemical Company
    Inventor: Daniel J. Najvar