Patents Examined by Lewis T. Jacobs
  • Process for processing thermoplastic polymers
    Patent number: 4925890
    Abstract: A process for enhancing the fabrication of thermoplastic polymers entailing the addition of from 0.01 to 1 part, per hundred parts of thermoplastic polymer, of a processing aid, said processing aid comprising a processing additive, such as a silicon or a polyol, and a processing adjuvant, such as a phosphate.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: May 15, 1990
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: Pak S. Leung, Errol D. Goddard, Fred H. Ancker
  • Interpenetrating polymer network of blocked urethane prepolymer, polyol, epoxy resin and anhydride
    Patent number: 4923934
    Abstract: A composition for use in forming an interpenetrating polymer network includes a blocked urethane prepolymer, a polyol, an epoxy resin and an epoxy catalyzing agent.
    Type: Grant
    Filed: January 5, 1989
    Date of Patent: May 8, 1990
    Inventor: Todd A. Werner
  • Epoxy compositions, and method of making same
    Patent number: 4923908
    Abstract: An epoxy resin composition, especially useful as an encapsulant and exhibiting a low dissipation factor, is prepared from a first component comprising an epoxy of a polyglycidal ether of a polyhydroxyl phenol and filler, and a second component comprising a cycloaliphatic acid anhydride curing agent, filler and catalyst. Each component is mixed separately under high shear, and the filler for each component comprises at least about 50 percent by weight. The two components are admixed, applied as an encapsulant, and cured at an elevated temperature.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: May 8, 1990
    Assignee: Zenith Electronics Corporation
    Inventors: Arthur J. Lostumo, Bernard M. Wiltgen
  • Epoxy resin powder coating composition with excellent adhesibility
    Patent number: 4923910
    Abstract: An epoxy resin powder coating composition with excellent adhesibility which comprises a bisphenol A type mixed epoxy resin having a number average molecular weight of from 800 to 2,000 comprising a mixture of a bisphenol A type epoxy resin having an average molecular weight of from 350 to 1,000 and a bisphenol A type epoxy resin having a number average molecular weight of from 2,500 to 8,000, an imidazole base compound, dicyandiamide, a pre-reacted product of an imidazole base compound with epoxy resin, and a filler.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: May 8, 1990
    Assignee: Somar Corporation
    Inventors: Katugi Kitagawa, Akira Shinozuka
  • Unsaturated polyester resins, a process for their preparation and compositions containing these polyester resins
    Patent number: 4921883
    Abstract: Unsaturated polyester resins having an acid number of from 0 to 50 and a hydroxyl number of from 10 to 150 which are composed of 0.6 to 0.8 moles of groups derived from maleic and/or fumaric acid, 0.2 to 0.4 moles of groups derived from norbornene dicarboxylic acid, 0.6 to 0.8 moles of groups derived from ethylene and/or propylene glycol, 0.2 to 0.4 moles of groups derived from diethylene glycol, 0.1 to 0.2 moles of groups derived from benzylalcohol and/or benzoic acid and 0 to 0.2 moles of groups derived from other alcohols, a process for their manufacture by a solvent-free or azeotropic esterification of said monomers and compositions which can be cured under influence of UV radiation, containing from 40 to 80 parts by weight of said polyester resins, from 20 to 60 parts by weight of styrene from 0.5 to 5 parts by weight of at least one photoinitiator and optionally known auxiliary agents and additives.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: May 1, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Meixner, Wolfgang Kremer, Manfred Muller
  • Powder coating compositions of polyepoxides and acrylic copolymers
    Patent number: 4921913
    Abstract: A thermosetting powder coating composition and a coated article are disclosed. The composition comprises a coreactable particulate mixture of an acid group-containing acrylic polymer and a compatible epoxy novolac resin and an incompatible epoxy resin. The compositions have a good balance of properties and are useful as coatings for appliance, general industrial and automotive applications.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: May 1, 1990
    Assignee: PPG Industries, Inc.
    Inventor: Paul H. Pettit, Jr.
  • Hydrophilic silicone rubber article and process for its preparation
    Patent number: 4920184
    Abstract: Hydrophilic silicone rubber article, the surface of which is hydrophilized partly or completely by reaction (equilibration reaction) with organosiloxanes, the organosiloxanes being synthesized by the reaction of SiH-group-containing siloxanes with allyl compounds which contain protected OH groups. These articles are particularly useful as contact lenses and intraocular lenses.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: April 24, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Horst Schafer, Gerhard Kossmehl, Walter Neumann
  • High strength epoxy tooling compositions
    Patent number: 4920161
    Abstract: A high strength, room temperature curable epoxy tooling compositions containing interstitially-matched filler systems for making cast-to-size forming tools for metal sheet stamping. The composition can be fully cured by at least one aliphatic amine catalyst in twelve hours producing a rigid article having a tensile strength of at least 40 MPa and a compressive strength of at least 100 MPa.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: April 24, 1990
    Assignee: General Motors Corporation
    Inventors: Chen-Shih Wang, Richard P. Atkins, Elio Eusebi, Thomas J. Dearlove
  • Ionizable paints for use especially as anti-lightning paints
    Patent number: 4920163
    Abstract: A paint for use on surfaces subject to lightning strikes includes a film-forming binder and a pigment, the pigment comprising at least one alkali metal salt or alkaline earth metal salt with a low first ionization potential, of a mono- or polyfunctional organic acid, carbonic acid or a polymer having an acidic group, the pigment being present in an amount sufficient to render the paint ionizable under the action of a strong electric current.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: April 24, 1990
    Assignee: Centre Nationale d'Etudes Spatiales
    Inventors: Jean-Claude Guillaumon, Louis J. C. Blet
  • Electrocoating composition of a polyamine self-condensed epoxy adduct and coatings produced thereby
    Patent number: 4920162
    Abstract: The invention relates to a novel electrocoating composition for metallic substrates that exhibits "thick-build" protective properties at "medium-build" thicknesses. It is composed of a self-addition epoxy resin-polyamine adduct, a blocked isocyanate cross-linker, a polyglycol-polyamine grind resin, a plasticizer, an anti-cratering agent and pigments.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: April 24, 1990
    Inventors: Peter D. Clark, John A. Gilbert, Gunther Ott, Dieter Ruhl, David J. Santure
  • Colored and wear-resistant decorative coating based on epoxy resin and for use on floors and on panels, and method of obtaining it
    Patent number: 4920002
    Abstract: The coating is constituted by a uniform mixture of solvent-free epoxy resin containing the usual additives, solid glass microbeads, and pigment-colored aluminum flakes, said coating thus being pigmented in its bulk, translucent, and glittering in durable manner. The flakes are advantageously colored using a colored and irridescent epoxy varnish. The coating is suitable for application in a single coat and the single coat may be from 1 mm to 5 mm thick. It is obtained by spreading the uniform mixture of the various components on a key-providing undercoat which is initially applied to the surface to be coated. The mixture is obtained by using pre-measured quantities.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: April 24, 1990
    Assignee: Societe Francaise Bitumastic
    Inventors: Christian Cussot, Jean-Didier Delage
  • Friction resistant composition
    Patent number: 4920159
    Abstract: The present invention is a composition comprising a friction resistant filler and a cyanato group containing phenolic resin which has repeating units of the formula: ##STR1## wherein p is 0 or an integer of one or more, q is an integer of one or more, and X is a radical selected from the group consisting of: --CH.sub.2 --, --CO--, --SO.sub.2 --, ##STR2## with --CH.sub.2 -- preferred. R is the same or different and is selected from the group consisting of hydrogen and methyl radicals and composition based on phenolic triazine resins derived therefrom.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: April 24, 1990
    Assignee: Allies-Signal Inc.
    Inventors: Sajal Das, Dusan C. Prevorsek, Seong K. Rhee, William J. Bulger
  • Adhesive containing isocyanate-terminated polyurethane prepolymer and epoxy resin
    Patent number: 4918119
    Abstract: A moisture-hardening flocking adhesive composition for application to elastomers. The adhesive contains an isocyanate terminated polyurethane prepolymer, an aromatic dinitroso compound and an essentially hydroxyl-free epoxy resin having an epoxide value of from about 0.45 to about 0.75. The composition is essentially free of highly volatile organic solvents. The composition is characterized as having improved storage stability and provides excellent adhesion between elastomeric substrates and flocking fibers, even after exposure to water.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: April 17, 1990
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Hans-Guenter Seltmann, Hans-Josef Hoffmann, Hartmut Lippert
  • Composition comprising vinyl ester, unsaturated urethane and polybasic acid
    Patent number: 4918150
    Abstract: An activation energy-curable resin composition comprising as an essential ingredient a resin obtained by reacting (a) a reaction product of a novolak-epoxy compound and an unsaturated monocarboxylic acid, (b) a reaction product of a diisocyanate and a poly(meth)acrylate having a hydroxyl group per moleucle and (c) at least one of an aromatic, aliphatic or alicyclic polybasic acid (or an anhydride thereof).
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: April 17, 1990
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Shigeru Sakakibara, Shunji Arimoto
  • Reaction curable composition and artificial marble
    Patent number: 4916172
    Abstract: A reaction curable composition comprising a curable component, a polymerization initiator for curing the curable component and from 30 to 90% by weight, based on the total composition, of inorganic fillers, wherein the curable component is a combination of a polyfunctional allylcarbonate monomer or its precondensate, an unsaturated polyester and a reactive diluent, or a combination of a partially cured product of at least two of such three components and the rest of such three components, if any.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: April 10, 1990
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Takao Hayashi, Kazuhiko Kameda
  • Polycarbonate homopolymer-based fiber compositions and method of melt-spinning same and device
    Patent number: 4916207
    Abstract: Novel polycarbonate homopolymers and implantable bioresorbable medical devices fabricated therefrom.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: April 10, 1990
    Assignee: Allied-Signal, Inc.
    Inventors: William J. Boyle, Jr., Frank Mares, Kundan M. Patel, Reginald T. Tang
  • Resin composition for absorbing electromagnetic waves
    Patent number: 4912143
    Abstract: A resin composition containing potassium based single crystal fibers for absorbing electromagnetic waves.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: March 27, 1990
    Assignee: Tong Yang Nylon Co., Ltd.
    Inventors: Tae O. Ahn, Kyoung N. Park, Beom S. Kim
  • Acid-functional polymers from hydroxy polymers and cyclic anhydrides
    Patent number: 4912160
    Abstract: Stable, non-aqueous solvent solutions of acid-functional polymers are prepared by:(a) reacting, in the presence of an esterification catalyst, a hydroxy-functional acrylic polymer with a cyclic carboxylic anhydride at a reaction temperature from about 35.degree. C. to about 76.degree. C. thereby forming an acid-functional polymer having ester groups and carboxylic acid groups; and(b) maintaining the reaction of the anhydride and hydroxyl groups until the desired amount of acid functionality on the acid-functional polymer has been obtained; and then(c) adding to said acid-functional polymer a stabilizing amount of a low-molecular weight alcohol solvent under conditions which will not cause substantial reaction of the solvent and the acid-functional polymer.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: March 27, 1990
    Assignee: The Sherwin-Williams Company
    Inventor: Mohamad D. Shalati
  • Curable blends of fluoroelastomer and poly(ether-ketone-ketone)
    Patent number: 4912166
    Abstract: A blend of tetrafluoroethylene and a poly(oxy-p-phenyleneisophthaloyl-phenylene/oxy-p-phenyleneterephthaloyl- p-phenylene) (PEKK) results in improved processing of the fluoroelastomer at temperatures below the melting temperature of the PEKK and improves physical properties of cured fluoroelastomer.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: March 27, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles W. Stewart
  • Polyether polyamine-piperazine cured cycloaliphatic epoxy resin compositions
    Patent number: 4910269
    Abstract: The invention is an epoxy resin coating composition. The composition comprises:1. a cycloaliphatic epoxy resin (hydrogenated bisphenol A resin), and2. a triacrylate ester, reacted with a mixture of3. a polyether polyamine of the formula:NH.sub.2 CH(CH.sub.3)CH.sub.2 [OCH.sub.2 CH(CH.sub.3)].sub.x NH.sub.2 a.wherein x ranges from 2 to 6, orb. ##STR1## wherein x+y+z ranges from 4 to 6; and 4. piperazine.The weather resistant formulations cure rapidly to form blemish-free, attractive, high-gloss coatings.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: March 20, 1990
    Assignee: Texaco Chemical Co.
    Inventor: Harold G. Waddill