Patents Examined by Thomas Hamilton, III
  • Patent number: 5504157
    Abstract: A homogeneous polymer blend is disclosed containing components A and B. Accordingly A is about 1 to 30% by weight of a rigid, rod-shaped polymer having a persistence length of at least 10 nm and a ratio of molecular length to molecular diameter of at least 30, and B) is about 70 to 99% by weight of a flexible polymer which contains at least one member selected from the group consisting of non-ionic polar groups, ionic groups and groups convertible into ions. The flexible polymer is any one of polyolefins, polyacrylates, polyamides and polyurethanes. Component A) contains at least one chemically fixed member selected from the group consisting of non-ionic polar group, ionic group and a group convertible into ionic group, in an amount sufficient to render said A) and B) compatible one with the other.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: April 2, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Claus D. Eisenbach, Karl Fischer, Jorg Hoffmann
  • Patent number: 5502122
    Abstract: Molding materials comprise polyarylene ethers having terminal hydroxyl groups, polyarylene ethers having terminal groups which are not hydroxyl groups, polyarylene sulfides and furthermore fibrous or particulate fillers, rubber impact modifiers and additives or processing assistants.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: March 26, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Weber, Wolfgang Eberle
  • Patent number: 5494967
    Abstract: Compositions comprising two or more re-esterified ethylene-unsaturated ester copolymers, for example ethylene-vinyl acetate copolymers, improve the low temperature properties of fuel oils.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: February 27, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Ramah J. Brod, Brian W. Davies, Tuncel Ibrahim
  • Patent number: 5492760
    Abstract: A cross-linkable polymer composition containing a cross-linkable polymer having at least one hydrolysable silane group, a silanol condensation catalyst and a polybutadiene. The composition provides a cross-linked polymer having good water tree resistance properties, for use as insulation in electrical cables.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: February 20, 1996
    Assignee: AT Plastics Inc.
    Inventors: Haridoss Sarma, Alexander Shaikevitch
  • Patent number: 5491182
    Abstract: The present invention is directed to sizing compositions for use on glass fibers which are used to reinforce lamination resins used in the formation of glass laminates. The sizing compositions contain a low molecular weight, polymer latex prepared by polymerizing at least one monomer(s) selected from the group consisting of acrylic acid, methacrylic acid, C.sub.1 -C.sub.18 alkyl esters of acrylic acid, C.sub.1 -C.sub.18 alkyl esters of methacrylic acid, glycidyl acrylate, glycidyl methacrylate, C.sub.1 -C.sub.4 hydroxyalkyl esters of acrylic acid, C.sub.1 -C.sub.4 hydroxyalkyl esters of methacrylic acid, vinyl esters of saturated aliphatic monocarboxylic acids containing up to 10 carbon atoms, (meth)acrylamide and their N-substituted derivatives, vinyl ethers, N-vinyl lactams, halogenated vinyl compounds, alkyl vinyl ketones, (meth)allyl ester of saturated aliphatic monocarboxylic acids, vinyl compounds such as vinyl pyrrole, olefins, diesters of itaconic, maleic and/or fumaric acid, and styrene.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: February 13, 1996
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Charles R. Key, Yen-Jer Shih
  • Patent number: 5491194
    Abstract: The toughness of a thermoplastic, rigid polyurethane is markedly improved by incorporating a mass ABS resin such as styrene/butadiene rubber grafted with a copolymer of styrene and acrylonitrile. This toughened polyurethane is particularly useful in making structural automotive body parts and housings for electrical appliances.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 13, 1996
    Assignee: The Dow Chemical Company
    Inventors: David E. Henton, Augustin Chen, Paul J. Moses, Benjamin S. Ehrlich, Douglas E. Beyer
  • Patent number: 5489640
    Abstract: Disclosed are compositions having the characteristic of improved heat distortion temperature for compositions comprising a poly(phenylene ether) resin, a polyester resin, a polycarbonate resin, a reinforcing filler, and a heat enhancing non-fibrous filler in combination with a poly(tetrafluoroethylene) resin. The compositions may further comprise at least one additive from the group consisting of impact modifiers, non-elastomeric polymers of an alkenyl aromatic compound and an additive package. The flow of such compositions can be further improved with the addition of an optional flow promoting terpene phenol material without significant loss of the physical properties.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: February 6, 1996
    Assignee: General Electric Company
    Inventor: Geoffrey H. Riding
  • Patent number: 5488085
    Abstract: Polymer polyols prepared by a semi-batch process using a small amount of a seed polymer polyol are disclosed. The final polymer polyol has a broader particle size distribution as compared to an identically prepared polymer polyol prepared in the absence of the seed polymer polyol. The polymer polyols are suitable for use in producing polyurethanes, particularly polyurethane foams.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: January 30, 1996
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: John E. Hayes, Donald W. Simroth, Xinhua Zhou
  • Patent number: 5486398
    Abstract: There is described a low flammability carpet floor covering comprising a backing material, a tied-in pile yarn, and a back finish, wherein the pile yarn comprises low flammability synthetic fibers, the backing material comprises normal or low flammability synthetic fibers, and the back finish comprises a polyurethane composed of the radicals of the formulae I to VII:--CO--A1--CO-- (I)--CO--A2--CO-- (II)(--O--).sub.n --A3--(COOH).sub.m (III)--O--B1--O-- (IV)--O--B2--(O--).sub.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: January 23, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Manfred Weber, Gerhard Schwarz
  • Patent number: 5484858
    Abstract: The properties of polyphenylene ether-polyamide mixtures can be improved by the addition of polysiloxane compounds.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: January 16, 1996
    Assignee: General Electric Company
    Inventors: Hendrikus J. E. Smits, Roelof van der Meer, Adelbert H. L. Groothuis
  • Patent number: 5484838
    Abstract: The invention is a molded thermoplastic article having a modified electrical conductivity and hence being particularly adapted for electrostatic painting. The article is composed of a composition comprising a polymer blend of at least two polymers and electrically conductive carbon black. The polymer blend comprises a crystalline polymer and an amorphous or semi-crystalline polymer, the crystalline polymer comprising at least about 35 weight percent of the blend.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: January 16, 1996
    Assignee: Ford Motor Company
    Inventors: Jeffrey H. Helms, Edmund J. Blais, Mo-Fung Cheung
  • Patent number: 5482999
    Abstract: The invention relates to a mixture of a polyphenylene ether resin and a styrene-containing polymer or copolymer, in which at least a part of the polyphenylene ether resin is modified with reactive groups of a first type and at least a part of the styrene-containing polymer or copolymer is modified with reactive groups of a second type which are capable of reacting with the reactive groups of the first type. The invention further relates to articles formed from the said mixture, which have a good combination of low surface gloss and mechanical properties.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: January 9, 1996
    Assignee: General Electric Company
    Inventors: Sarah E. Morgan, Charles F. Pratt, Cinzia A. R. di Fede, Julia A. J. M. Verdult-van Aert
  • Patent number: 5483002
    Abstract: Propylene polymers containA) a semicrystalline propylene homopolymer having a melting point of 125 to 165.degree. C. and a glass transition temperature which is greater than -10.degree. C. andB) a semicrystalline propylene homopolymer having a melting point below 130.degree. C. and a glass transition temperature which is less than or equal to -10.degree. C. or a non-crystallizing propylene homopolymer having a glass transition temperature which is less than or equal to -10.degree. C.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Stephan Seelert, Franz Langhauser, Jurgen Kerth, Patrik Muller, David Fischer, Gunther Schweier
  • Patent number: 5480721
    Abstract: Multilayer structures comprising at least a fluorinated thermoplastic and a non-fluorinated thermoplastic wherein the adhesive intermediate layer comprises a fluorinated thermoplastic, a non-fluorinated thermoplastic and an ionomer which comprises copolymers having reactive groups salified or not; the amount of reactive groups in the ionomer copolymer being preferably higher than 3% by weight, in general between 8-35%.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: January 2, 1996
    Assignee: Ausimont, S.p.A.
    Inventors: Massimo Pozzoli, Giandomenico Vita, Larry L. Chapoy
  • Patent number: 5480692
    Abstract: A process to increase resistance to tearing in a heat-resettable material involves extruding a polymer of a specified crosslinking density to produce a plastic web. After cooling the plastic web is heated by creating a temperature decreasing towards its core and stretched at core temperature below crystalline melting temperature of partially crystalline and crystalline polymers resulting in a distribution of orientation over the full section of the plastic web. Resistance to tearing will be essentially increased in this manner based on a simple, low-cost production process.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: January 2, 1996
    Assignee: Stewing Nachrichtentechnik GmbH & Co.
    Inventors: Norbert Nicolai, Heinz Koppe, Thomas Schwabe, Jurgen Vogel
  • Patent number: 5475054
    Abstract: A resin composition comprising (A) a polyphenylene ether resin, (B) a polyolefin resin, and optionally (C) an elastomer, and (D) an aliphatic polycarboxylic acid derivative represented by the following general formula:(R.sub.1 O).sub.m R(COOR.sub.2).sub.n (CORN.sub.3 R.sub.4).sub.swherein R represents a saturated hydrocarbon group having 2 to 20 carbon atoms with a linear or branched chain; R.sub.1 represents a hydrogen atom or an alkyl, aryl, acyl or carbonyldioxy group having 1 to 10 carbon atoms; each R.sub.2 represents a hydrogen atom or an alkyl or aryl group having 1 to 20 carbon atoms; R.sub.3 and R.sub.4 each represents a hydrogen atom or an alkyl or aryl group having 1 to 10 carbon atoms; m represents a number equal to 1 or 2; (n+s) is larger than or equal to 2 and, n and s are each larger than or equal to 0; (OR.sub.1) is in an alpha or beta position with respect to a carbonyl group, and in which at least two carbonyl groups are separated by 2 to 6 carbon atoms.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: December 12, 1995
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroomi Abe, Kenji Nagaoka, Takashi Sanada
  • Patent number: 5468530
    Abstract: High molecular weight thermoplastic molding materials are obtainable by mixingA) 20-80% by weight of a polyphenylene ether andB) 0-70% by weight of conventional additives and processing assistantsinto a melt ofc) 10-80% by weight of a low molecular weight polyamide having a viscosity number of from 40 to 185 ml/gand subsequently carrying out solid-phase postcondensation.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: November 21, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Gotz, Axel Gottschalk
  • Patent number: 5464903
    Abstract: Gel, or unfluxed PVC grains commonly present in PVC plasticized with high molecular weight ethylene copolymer plasticizers, can be reduced by using an improved production process which involves substituting a modifier, which is partially crosslinked high molecular weight ethylene copolymer, for a portion of the non-crosslinked high molecular weight ethylene copolymer plasticizer. Preferably the modifier also contains a small mount of a low molecular weight plasticizer to counteract the effect of viscosity increase which the partially crosslinked ethylene copolymer otherwise would produce.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: November 7, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George H. Hofmann
  • Patent number: 5461109
    Abstract: A golf ball having a coating of a water-based, water-reducible polyurethane, and a related method of forming a coating on a golf ball which avoids the problems of foaming of the coating. The coating is formed by the addition of a first component comprising a compound having hydroxyl functionality, an organic solvent, an optical brightener and water, to a second component comprising an aliphatic polyisocyanate and an organic solvent. In addition, a method of forming a top coat on a golf ball having a SURLYN.RTM. outer layer which avoids the use of a primer coat or adhesion promoting layer is disclosed.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: October 24, 1995
    Assignee: Guardsman Products, Inc.
    Inventors: Marvin A. Blair, Richard A. Ford
  • Patent number: 5460870
    Abstract: A structure is disclosed comprising a layer of polyurethane foam bonded to at least one layer of another material, especially a layer of fibreglass matte, a layer of cellulosic material e.g. cardboard, and/or a layer of polyurethane foam. The layers are bonded together with an adhesive of polyethylene or polypropylene that has been grafted with an ethylenically unsaturated dicarboxylic acid or anhydride thereof, the adhesive containing at least 0.03% by weight of said acid or anhydride. The structure exhibits a temperature for heat-fail resistance in shear of at least 90.degree. C. In embodiments, the polyurethane foam is a rigid polyurethane foam, and the polyethylene and polypropylene have been grafted with fumaric acid, maleic acid or maleic anhydride. As an example, the structure is comprised of a layer of fibreglass matte, at least one layer of polyurethane foam and a layer of fibreglass matte, the layers being bonded together with the adhesive.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: October 24, 1995
    Assignee: Du Pont Canada Inc.
    Inventor: Trevor C. Arthurs