Patents Examined by Lewis T. Jacobs
  • Patent number: 4997876
    Abstract: Flame-retarding composition for rendering self-extinguishing polymers, copolymers, mixtures of polymers and various polymeric materials, comprising a polymer, a copolymer, or a mixture of polymers of hydroxyalkyl-derivatives of isocyanuric acid and ammonium polyphosphate, and so-obtained self-extinguishing polymers and polymeric materials.
    Type: Grant
    Filed: January 18, 1989
    Date of Patent: March 5, 1991
    Assignee: V.A.M.P. S.r.l.
    Inventor: Luciano Scarso
  • Patent number: 4997863
    Abstract: A thermosetting resin composition suitable for forming an insulating layer to be interposed between two adjacent wiring patterns of a multilayer printed circuit board is disclosed which includes an aromatic epoxy resin having at least two epoxy groups, an aromatic polyamine mica having an average particle size of 50 .mu.m or less, and silica having an average particle size of 20 .mu.m or less, the average particle size of the silica being smaller than that of the mica, and the amount of the silica being 20-80% based on the total weight of the silica and the mica.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: March 5, 1991
    Assignee: Somar Corporation
    Inventors: Osamu Ogitani, Takashi Shimizu, Ryuichi Fujii
  • Patent number: 4997893
    Abstract: The present invention relates to graft copolymers based on at least one ethylenically unsaturated monomer containing perfluoroalkyl groups mixed with an acrylic, methacrylic, vinyl, maleic and/or styrene derivative and a melamine polycondensate as the graft substrate, which are suitable for oleophobic treatment of textiles, carpets, paper or leather and at the same time are effective hydrophobicity agents, and a process for their preparation.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: March 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Carlhans Suling, Friedrich Reich, Wilfried Kortmann, Klaus-Dieter Schultz, Manfred Fischer
  • Patent number: 4997860
    Abstract: A sand casting caking agent contains an acid-curable resin and an organosilicon compound of the general formula (I): ##STR1## in which R.sup.1 is hydrogen or an alkyl having from 1 to 6 carbon atoms, R is a substituted or nonsubstituted monovalent hydrocarbon group, Y is an alkoxy group having from 1 to 6 carbon atoms, n is an integer of from 1 to 6 and m is either 0 or 1. Casting molds containing the agent of the present invention exhibit superior moisture resistance.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: March 5, 1991
    Assignee: Toshiba Silicone Co., Ltd.
    Inventor: Keiji Kabeta
  • Patent number: 4996249
    Abstract: A process for improving the flowability of resin coated sand which comprises the use of a fluorosurfactant with the mixture of sand and resin. Also provided is a resin binder containing a fluorosurfactant and a foundry mix comprising foundry sand, a resin binder and a fluorosurfactant. The resins used are alkaline phenolic resole resins and acid-curable resins.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: February 26, 1991
    Assignee: Acme Resin Corporation
    Inventors: Calvin K. Johnson, Richard C. Cooke, Kwok-Tuen Tse
  • Patent number: 4996252
    Abstract: Disclosed is a novel blend of a water-dissipatable polyester material and an acrylic polymer. The acrylic polymer must be compatible with the polyester and can be optionally styrenated. The polyester is exemplified in having an acid component of from about 70 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof.The polymer blends are useful for preparing ink compositions having improved block resistance and water resistance.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: February 26, 1991
    Assignee: Eastman Kodak Company
    Inventors: Hieu D. Phan, Gary W. Carrier, Rebecca R. Stockl, Frank J. Tortorici, R. Gary Wulf
  • Patent number: 4994518
    Abstract: Molding compositions, easily shaped into useful articles having improved mechanical properties that are less anisotropic, contain (a) a thermotropic polymer, and (b) an inorganic filler material, such inorganic filler (b) being a crystalline inorganic filler of platelet shape having a mean diameter ranging from 0.5 to 400 .mu.m and a shape factor represented by the ratio: ##EQU1## which ranges from 10 to 90, and such inorganic filler (b) being present in an amount, expressed in % by weight of filler in the combined polymer+filler, ranging from 20% to to 60%, with the proviso that such amount ranges from above 50% to 60% when the mean particle diameter of the filler material is less than 20 .mu.m.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: February 19, 1991
    Assignee: Rhone-Poulenc Chimie
    Inventors: Alain Morin, Jean-Pierre Quentin
  • Patent number: 4994505
    Abstract: The invention relates to a binder composition comprising a low molecular weight poly (orthomethylolated) phenolic compound which is combined with a phenol formaldehyde novolac resin and cured in the presence of alkali and an organic ester. Low and high density aggregates can be added to the binder to produce foundry or refractory articles. The binder can also be applied, with or without aggregate, to paper, fabrics, or concrete.
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: February 19, 1991
    Assignee: Borden, Inc.
    Inventor: Arthur H. Gerber
  • Patent number: 4994506
    Abstract: Asbestos-free brake lining comprising phenolic resin and usual fillers and in addition an amount of a synthetic hydrated calcium silicate particle of xonotlite with a substantially spherical morphology and a mean diameter of 50 to 70 .mu.m with an open inner structure and an outer shell with a close limited crystal structure with pore openings of up to 10.sup.-7 m in the outer shell.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: February 19, 1991
    Assignee: Redco N.V.
    Inventors: Octavian Anton, Alfred Eckert, Armin Eckert
  • Patent number: 4994516
    Abstract: Hot melt adhesives comprising ethylene/vinyl acetate copolymer, wax, and a resin containing 5 to 80 wt. % of units derived from olefinically unsaturated aromatic compounds, 5 to 80 wt. % of units derived from C.sub.5 or C.sub.6 olefines or diolefines or a mixture thereof, and from 7 to 45% of units derived from a terpene. The hot melt adhesive composition has improved color and compatibility over ethylene/vinyl acetate copolymer and wax blends containing resins of significant portions of cyclopentadiene or dicyclopentadiene. The hot melt adhesive of the invention also show improved adhesive properties on substrate such as glass and aluminum.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: February 19, 1991
    Assignee: Exxon Research & Engineering Company
    Inventor: Quoc Luvinh
  • Patent number: 4992489
    Abstract: Epoxy resin systems readily available for curing by the application of an induction heat energy source comprising a silica-filled, low viscosity epoxy resin in combination with an iron oxide or a steel powder.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: February 12, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Rajan Eadara, Robert F. Armbruster
  • Patent number: 4992514
    Abstract: A composition having at least 50% by weight polyamide and a liquid crystalline polymer capable of forming an optically anisotropic melt above 200.degree. C. Such compositions are transformed by deformation at temperatures below the melting point and above the glass transition temperature of the polyamide. Shaped bodies made thereby have excellent tensile strength and elongation at break characteristics.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: February 12, 1991
    Assignee: EMS-Inventa AG
    Inventors: Hans-Joachim Schultze, Hanns-Joerg Liedloff
  • Patent number: 4992528
    Abstract: A graphite fiber reinforced polymer matrix is layed up, cured, and thermally aged at about 750.degree. F. in the presence of an inert gas. The heat treatment improves the structural integrity and alters the electrical conductivity of the materials. In the preferred embodiment PMR-15 polyimides and Celion-6000 graphite fibers are used.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: February 12, 1991
    Assignee: The United States of America, as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Kenneth J. Bowles, Carl E. Lowell
  • Patent number: 4992516
    Abstract: Cathodically depositable paint binders based on epoxy resin/amine adducts modified with diamine bridges which carry longer-chained substituents are described. The diamine bridges are the reaction products of diprimary amines and mono- and diepoxy compounds. The modified epoxy resin/amine adducts have low viscosities and low glass transition temperatures in spite of their high molecular weights. The stoved films, even with higher film thickness, have flawless surfaces and excellent mechanical properties.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: February 12, 1991
    Assignee: Vianova Kunstharz, A.G.
    Inventors: Rudolf Schipfer, Gerhard Schmolzer, Gunther Monschein, Gerhard Meglitsch
  • Patent number: 4990577
    Abstract: The invention provides a liquid coating composition curable at ambient temperature comprising a compound having at least 2 acryloyl groups or methacryloyl groups and an amino compound having a primary amino group which is blocked with an aldehyde or ketone, said amino compound being an aliphatic or cycloaliphatic amine containing 2-24 carbon atoms or an adduct of a molecular weight of 300-1500 of an epoxy compound or isocyanate compound or .alpha.,.beta.-ethylenically unsaturated carbonyl compound and a primary amine having a group reacting with said epoxy compound or isocyanate compound or .alpha., .beta.-ethylenically unsaturated carbonyl compound. A process for coating a substrate with such composition is also provided.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: February 5, 1991
    Assignee: Akzo N.V.
    Inventors: Arie Noomen, Paul M. Vandevoorde, Tamme Bartels, Gerardus J. W. M. Maters, Winsenty L. S. Pilaszek
  • Patent number: 4990554
    Abstract: A polyolefin composition is disclosed, which comprises a polyolefin and an inorganic filler, wherein the polyolefin composition comprising (A) 75 to 97% by weight of a polyolefin component comprising (a) 90-65 parts by weight of a polymer composition comprising a crystalline polypropylene component and an ethylene-propylene random copolymer component and having an ethylene content of 7% by weight or less and/or a propylene homopolymer and (b) 10 to 35 parts by weight of a polyethylene having a melt index of not lower than 10 g/10 min., said melt index being from 1.0 to 50 times that of the polymer (a), and (B) 25 to 3% by weight of a fibrous inorganic filler having an average fiber diameter of 0.1 to 0.8 micrometer and an aspect ratio of 20 to 60.The polyolefin composition is capable of providing, upon molding, articles having good surface appearance, in particular glossiness and improved mechanical strengths with less warping and deformation.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: February 5, 1991
    Assignee: Idemitsu Petrochemical Company Limited
    Inventors: Manabu Nomura, Ryozo Tomomatsu, Toshifumi Shimazaki
  • Patent number: 4990550
    Abstract: Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 .mu.m are uniformly dispersed in polyamide matrix phases.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: February 5, 1991
    Assignees: Tonen Sekiyukagaku Kabushiki Kaisha, Nippondenso Co., Ltd.
    Inventors: Kunio Iwanami, Kissho Kitano, Kiyotada Narukawa, Kenichi Aoki, Yukihiko Yagi, Masato Sakuma, Takashi Mikami, Masami Esaki, Fumio Kato, Koji Egashira, Hiroyuki Wakabayashi
  • Patent number: 4990579
    Abstract: Crosslinking cationic paint binders, preferably cathodically depositable paint binders comprising (poly)-2-hydroxyalkylurea compounds as a crosslinking agent are described. The 2-hydroxyalkylureas are obtained by reacting organic polyisocyanates with secondary beta-hydroxyalkylamines. The crosslinking agents of the invention permit film formation in the stoving range of about 140.degree. C., which is particularly favorable for water-based paints. Additionally, selective semi-blocking which is made possible through the difference in reactively between the NCO-groups of individual polyisocyanates is enhanced through use of the secondary amino groups, in comparison to through use of hydroxyl groups which are conventionally used.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: February 5, 1991
    Assignee: Vianova Kunstharz, A.G.
    Inventor: Willibald Paar
  • Patent number: 4988756
    Abstract: The tendency of poly(arylene sulfide) resin to cause mold corrosion upon molding is inhibited by mixing, prior to said molding, the poly(arylene sulfide) resin and lithium sulfite alone, or a combination of lithium sulfite and alkali earth metal carbonates, alkali metal or alkaline earth metal borates, or mixtures thereof.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: January 29, 1991
    Assignee: Phillips Petroleum Company
    Inventor: Van C. Vives
  • Patent number: 4988772
    Abstract: Graft and block copolymers of polyalkylvinyl ether and polyoxazoline moieties can be used as polymeric compatibilizers.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: January 29, 1991
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Judy S. Riffle, Gurudus D. Sinai-Zingde