Synthetic Resin Patents (Class 174/110SR)
-
Patent number: 4374972Abstract: Disclosed is a coating solution including an oligomeric polyetherimide component, an organic diamine component, an organic triamine component, a solvent system and optionally water, which may be coated on a substrate and polymerized to form high quality polyetherimide coatings and a process for preparing the solution.Type: GrantFiled: August 26, 1981Date of Patent: February 22, 1983Assignee: General Electric CompanyInventors: Donald A. Bolon, Thomas B. Gorczyca
-
Patent number: 4373048Abstract: An ethylene propylene diene terpolymer composition is suitable for use as an insulator in high voltage electrical connector applications, said insulator being characterized by excellent flame retardancy and resistance, low cost, excellent tensile strength, elongation and Shore "A" Hardness with good flow during molding, the insulator comprising a cured and molded product formed from a composition comprising ethylene propylene diene terpolymer, fillers, a synergistic mixture of flame retardant agents comprising at least a brominated organic flame retardant, a hydrated alumina, antimony oxide, and a flow improver.Type: GrantFiled: July 27, 1981Date of Patent: February 8, 1983Assignee: AMP IncorporatedInventors: Paul C. Schubert, Anil C. Thakrar
-
Patent number: 4369331Abstract: The disclosure of this application is directed to a composition, devoid of added mineral filler, comprising an ethylene polymer and an organo titanate as a water treeing inhibitor. The compositions can be extruded about electrical conductors providing insulation thereon which is resistant to deterioration in the presence of moisture and an electrical field.Type: GrantFiled: December 22, 1980Date of Patent: January 18, 1983Assignee: Union Carbide CorporationInventor: Michael J. Keogh
-
Patent number: 4368214Abstract: A method and apparatus are disclosed by which electrical conductor cable can be produced utilizing electrostatic coating means, which method and apparatus are highly convenient, uncomplicated and economical to carry out. An outstanding and unique feature of the cable produced in accordance herewith resides in the presence of a web portion of reduced cross-section connecting the individual conductors, by which manual severence of one from another is facilitated. Most desirably, the apparatus and method provide means for producing individual insulating coatings on each of the conductors, which means ideally utilizes an electrostatic cloud coating technique.Type: GrantFiled: June 12, 1981Date of Patent: January 11, 1983Assignee: Electrostatic Equipment Corp.Inventor: Donald J. Gillette
-
Patent number: 4352134Abstract: A conductive wire useful with a magnetic head assembly is formed from a zirconium/copper alloy core, which is plated with a corrosion resistant conductive metal, such as gold. The wire is preferably covered with insulation, such as polyurethane.Type: GrantFiled: November 19, 1979Date of Patent: September 28, 1982Assignee: International Business Machines CorporationInventors: Terry A. Burns, Leslie H. Johnston
-
Patent number: 4347288Abstract: A high voltage cable comprising a conductor and a polythene containing insulation sheath is provided with a metal complex of a diketone, salicylic acid optionally substituted with 1 to 2 lower alkyl groups, or a Schiff's base formed from an amine and salicylaldehyde optionally substituted with 1 to 2 lower alkyl groups, in order to prevent or impede the growth of watertrees during use.Type: GrantFiled: October 2, 1980Date of Patent: August 31, 1982Assignee: U.S. Philips CorporationInventors: Lourens Minnema, Grietje N. Van Boekel-Mol
-
Patent number: 4346136Abstract: A bondable enamel coated, insulated electrical conductor such as magnet wire. The bondable electrical conductor is formed by a base insulation coating on a metallic conductor such as wire, the base coating being a thermosetting, resin enamel, and a bondable overcoat of polyamide-imide enamel applied on said base coating. The polyamide-imide enamel includes residual solvent so that the polyamide-imide enamel is self-bondable.Type: GrantFiled: July 14, 1980Date of Patent: August 24, 1982Assignee: General Electric CompanyInventor: John H. Lupinski
-
Patent number: 4343917Abstract: The disclosure of application is directed to water-curable, amino silane modified alkylene-alkyl acrylate copolymers, free of halide salts and halide ions, which can be extruded about electrical conductors to provide improved insulation thereon.Type: GrantFiled: April 2, 1981Date of Patent: August 10, 1982Assignee: Union Carbide CorporationInventor: Michael J. Keogh
-
Patent number: 4338373Abstract: A method for coating an article which comprises coating the article first with (I) at least one imide resin selected from the group consisting of polyester imide resins, polyamideimide resins, polyhydantoin resins and mixtures thereof, and then with (II) cyanate ester resin which comprises as essential components (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymer of said cyanate esters, coprepolymer of said cyanate esters and an amine and mixtures thereof and (b) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymer of said maleimides, coprepolymer of said maleimides and an amine and mixtures thereof is disclosed.Type: GrantFiled: December 18, 1980Date of Patent: July 6, 1982Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Nobuyuki Ikeguchi, Yasunori Osaki
-
Patent number: 4332855Abstract: New polymeric compositions based on polytetramethylene terephthalate (PTMT) polymers are disclosed. PTMT polymers are subject to embrittlement, especially at elevated temperatures and when a flame retardant is incorporated therein. This problem is substantially reduced by blending the PTMT polymer with a second polymer which has a flex modulus of 500 to 100,000 psi and a solubility parameter within .+-.1.5 of the PTMT polymer, for example an ethylene/vinyl acetate copolymer or a block copolymer containing polyether and polyester blocks. The compositions are particularly useful as wire insulation.Type: GrantFiled: April 14, 1978Date of Patent: June 1, 1982Assignee: Raychem CorporationInventors: Steven C. Zingheim, Hans E. Lunk
-
Patent number: 4305849Abstract: A polyolefin composition for electrical insulation which comprises polyolefin or crosslinked polyolefin and a small quantity of high-molecular weight polyethylene glycol. This composition is far less vulnerable to the deterioration that occurs as dendroid voids when employed as an electrical insulation of high-tension power cables which are operated under water. The polyethylene glycol has more than 44 carbon atoms and is used in an amount from 0.3 to 10 wt % based on polyolefin.Type: GrantFiled: August 15, 1980Date of Patent: December 15, 1981Assignee: Nippon Unicar Company LimitedInventors: Youichi Kawasaki, Kenji Igarashi, Seiho Taniguchi
-
Patent number: 4299713Abstract: A unfilled polymeric composition having improved electrical treeing and water treeing properties comprising a polymeric component and effective amounts of an organic compound, such as, a specially defined silane. These compositions are particularly useful as insulation for high voltage transmission and distribution cables.Type: GrantFiled: June 23, 1980Date of Patent: November 10, 1981Assignee: National Distillers and Chemical Corp.Inventors: Melvin F. Maringer, Anthony Barlow
-
Patent number: 4294952Abstract: A polyamide-imide resin obtained by reacting in a cresol type solvent a polyisocyanate containing isocyanurate rings, an aromatic diisocyanate, a lactam and a polycarboxylic acid containing at least one acid anhydride group, said polyisocyanate being used in an amount of 1 to 30 equivalent % and said lactam in an amount of 20 to 80 equivalent % each based on the total isocyanate equivalent can give a resin composition or a varnish suitable for coating, particularly for producing insulated wire excellent in heat resistance, flexibility, resistance to Freon, wear resistance, and the like.Type: GrantFiled: November 16, 1979Date of Patent: October 13, 1981Assignee: Hitachi Chemical Company, Ltd.Inventors: Yoshiyuki Mukoyama, Touichi Sakata
-
Patent number: 4289687Abstract: A fire-retardant and radiation resistant molded resin product is prepared by blending a resin with a halogenated acenaphthylene compound of the formula: ##STR1## wherein X is chlorine or bromine and R is alkyl, alkoxy or alkylester of 1 to 4 carbon atoms such that when m is 0, n is an integer of 2 to 8; when m is an integer of 1 to 4, n is an integer of 2 to 7 and n+m is .ltoreq.8 and when m is more than 2, R may be the same or different; and, after molding said blend, generating free radicals within said blend.Type: GrantFiled: January 22, 1980Date of Patent: September 15, 1981Assignee: Japan Atomic Energy Research InstituteInventors: Miyuki Hagiwara, Yosuke Morita
-
Patent number: 4283459Abstract: A composition is disclosed especially useful for high voltage electrical insulation comprising a blend of polyethylene, an alcohol of 6 to 24 carbons to prevent electrical failure, and polypropylene to mitigate exudation of the alcohol.Type: GrantFiled: August 9, 1979Date of Patent: August 11, 1981Assignee: E. I. Du Pont de Nemours and CompanyInventors: Edward J. Urban, William P. Vitcusky
-
Patent number: 4281210Abstract: A cured, cross-linked, mineral oil extended polyurethane which is non-spewing. The mineral oil extended polyurethane is further characterized by being grease compatible in that the tendency of the mineral oil to migrate is substantially reduced or eliminated. The mineral oil extended polyurethane is comprised of a defined polyurethane, mineral oil, and coupling agent. In other aspects, the present invention relates to a process for reclaiming or sealing an insulated electrical device and to an insulated electrical device which is formed by such process.Type: GrantFiled: April 6, 1979Date of Patent: July 28, 1981Assignee: NL Industries, Inc.Inventors: Melvin Brauer, Thaddeus F. Kroplinski
-
Patent number: 4277534Abstract: An electrically insulating wire coating material comprises the reaction product of a mixture of polyvinyl acetal, phenol aldehyde resin and epoxy resin in a particular range of proportions. The mixture is formed into a powder for applying to a wire without the use of solvents, the coated wire being heated to harden the applied coating. The mixture can also be applied as a high solid enamel by the use of a small amount of solvent.Type: GrantFiled: December 12, 1979Date of Patent: July 7, 1981Assignee: General Electric CompanyInventor: Ralph G. Flowers
-
Patent number: 4273829Abstract: An insulated electrical conductor is provided that exhibits excellent physical, electrical and chemical protection for wire and cable and is particularly suitable for use in aircraft applications. The electrical conductor is insulated with (A) a film selected from ethylene tetrafluoroethylene copolymer film and fluorinated ethylene-propylene (FEP) copolymer coated polyimide film and (B) a topcoat insulation system comprising (a) a first layer of polyimide, (b) a second layer of polyvinylidene fluoride, and (c) a third layer of crosslinked acrylic polymer.Type: GrantFiled: August 30, 1979Date of Patent: June 16, 1981Assignee: Champlain Cable CorporationInventor: Aime J. Perreault
-
Patent number: 4271226Abstract: Electrical insulation for an elongate current carrying body, e.g. an underwater cable for carrying very high voltages, is provided by winding a tape round the body under tension, the tape being made of a film of an axially orientated polymer having a thickness less than 200 microns, and preferably between 10 and 50 microns, a significant degree of crystalline order, a high tensile strength, a high modulus of elasticity, and the ability to cling to itself.Type: GrantFiled: December 5, 1977Date of Patent: June 2, 1981Assignee: Compagnie Francaise des PetrolesInventor: Alain M. Herbreteau
-
Patent number: 4269894Abstract: Electric windings comprising an electric conductor and a plurality of cured insulating layers wrapping around the conductor, said cured insulating layers being obtained by bonding two or more insulating materials with a binder solution containing a mixture of a condensation polymerization type silicone resin containing hydroxyl groups in the molecule and an addition polymerization type silicone resin to form a composite insulating material, wrapping the composite insulating material around the conductor, impregnating the wrapped composite insulating material with an impregnating varnish of an epoxy-isocyanate resin and curing the impregnated composite insulating material, have excellent water resistance in addition to excellent thermal resistance, and mechanical properties.Type: GrantFiled: December 3, 1979Date of Patent: May 26, 1981Assignee: Hitachi, Ltd.Inventors: Masahiko Sakai, Shinichi Toyoda, Toshikazu Narahara, Takeshi Hakamada, Tomoya Tsunoda
-
Patent number: 4268659Abstract: Modified polyester imides, hardenable by energy-rich radiation and containing an acrylic or methacrylic ester group having a hydroxyl group, said ester group being linked to the polyester imide molecule by way of an oxygen atom that is located on the carbon atom adjacent to the carbon atom carrying said hydroxyl group, as well as a process for their production and their use for the insulation of electric wires.Type: GrantFiled: March 25, 1980Date of Patent: May 19, 1981Assignee: Herberts Gesellschaft mit beschrankter HaftungInventors: Klaus Bederke, Hermann Kerber
-
Patent number: 4267231Abstract: Superior wire enamels comprise polyester imides prepared in the presence of a monobutyl ether of a mixed diglycol having a free secondary hydroxyl group and dissolved in a solvent comprising predominantly a polar oxygenated compound selected from a monoether or monoester of an alkylene, or polyalkylene, glycol. Electrical conductors coated with such enamels are also disclosed.Type: GrantFiled: June 29, 1979Date of Patent: May 12, 1981Assignee: General Electric CompanyInventor: Otto S. Zamek
-
Patent number: 4260661Abstract: Polyolefin compounds having improved resistance to oxidation and heat aging attributable to the incorporation therein of the combination of a zinc salt of a mercaptoimidazole with a sterically hindered phenol, a method of enhancing oxidation resistance and heat aging stability by means of the incorporation of the combination in polyolefins, an electrical conductor insulated therewith and method of forming.Type: GrantFiled: January 23, 1980Date of Patent: April 7, 1981Assignee: General Electric CompanyInventors: Robert B. Walters, Edward V. Wilkus
-
Patent number: 4259410Abstract: As insulation for electric cables, there is provided an improved polyolefin having low shrinkage values, high elongation values, even after aging, the desired electrical insulation properties, and comprising partially crystalline, randomly copolymerized polypropylene having a proportion of ethylene, butene-1 and/or 1-hexene incorporated by polymerization of 1-6% by weight, a xylene-soluble proportion of 2-20% by weight, a viscosity value I of 200-400 cc./g., a melt flow index value (MFI.sub.190/5) of 1-20 g./10 min., and an elongation value of above 700%.Type: GrantFiled: April 6, 1978Date of Patent: March 31, 1981Assignee: Chemische Werke Huels AktiengesellschaftInventors: Walter Dittmann, Albert Frese, Otto Hahmann, Johannes Plenikowski, Helmut Klawitter
-
Patent number: 4257904Abstract: A formulation comprising, by weight, 4.7-39.7 percent polymethylmethacrylate (PMMA), 0-9.1 percent plasticizer and 60.3-93.0 percent dielectric glass (along with an appropriate amount of solvent) is ball milled to an appropriate size for spraying. After the formulation is sprayed onto a substrate, it is baked at a temperature of approximately 620.degree. C. for approximately 2 hours. During the baking step, the PMMA decomposes to a methylmethacrylate monomer. The resultant dielectric coating will contain a small amount of residue (less than 1 percent) of the monomer and the plasticizer.Type: GrantFiled: December 30, 1974Date of Patent: March 24, 1981Assignee: International Business Machines Corp.Inventor: Leslie C. Anderson
-
Patent number: 4251423Abstract: Superior wire enamels comprise a polyester of a dibasic organic acid, a polyhydric alcohol having at least 3 hydroxyl groups, and 1,2-propylene glycol in a polar oxygenated solvent comprising a monoether or monoester of an alkylene or polyalkylene glycol. Electrical conductors coated with such enamels are also disclosed.Type: GrantFiled: February 14, 1979Date of Patent: February 17, 1981Assignee: General Electric CompanyInventor: Otto S. Zamek
-
Patent number: 4243579Abstract: A flame retardant alkylene-alkyl acrylate copolymer composition comprising alkylene-alkyl acrylate copolymer, a halogenated flame retardant additive, and at least one of calcium or magnesium oxide, carbonate, hydroxide, or sulfate.Type: GrantFiled: September 21, 1978Date of Patent: January 6, 1981Assignee: Union Carbide CorporationInventor: Michael J. Keogh
-
Patent number: 4233470Abstract: Materials and methods are shown for increasing the antioxidant protection of polyolefin insulation, such as low density polyethylene insulation on electrical conductors. The materials may be applied in the field to increase the service life of in-place cable. The material is typically applied by brushing or spraying a lacquer-based carrier containing the inventive stabilizer onto the insulation to be protected. The stabilizer migrates into the polyolefin insulation, typically increasing the service life of antioxidant depleted cable by several years.Type: GrantFiled: July 6, 1979Date of Patent: November 11, 1980Assignee: Bell Telephone Laboratories, IncorporatedInventor: Frederick R. Wight, Jr.
-
Patent number: 4226903Abstract: Electrical insulating sheet material characterized by a coating of thermosetting resinous adhesive material distributed over two sides of a sheet of aramid paper, in combination with a pattern of pressure sensitive adhesive material applied to one side of the aramid paper sheet.Type: GrantFiled: August 25, 1978Date of Patent: October 7, 1980Assignee: General Electric CompanyInventors: William H. Gottung, Kevork A. Torossian
-
Patent number: 4225649Abstract: A self-extinguishing fire-protective composition is disclosed. The composition includes a water-based resinous emulsion, organically bound halogen, clay and a low temperature fiber such as glass or organic fibers.Type: GrantFiled: September 27, 1978Date of Patent: September 30, 1980Assignee: The Flamemaster CorporationInventor: Roger L. Peterson
-
Patent number: 4219607Abstract: New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain phosphorus-containing compounds which have been found to provide the compositions with greatly improved resistance to erosion by high voltage stress. The phosphorus-containing compounds include phosphonates, phosphates, phosphites, phosphinates, phosphonites, phosphinites, phosphine oxides and sulfides, and phosphines, and salts and complexes thereof. The phosphorus-containing compound can react in situ with the polymer or other ingredients of the composition.Type: GrantFiled: January 13, 1978Date of Patent: August 26, 1980Assignee: Raychem CorporationInventors: Travers K. Cammack, II, David D. Nyberg
-
Patent number: 4215157Abstract: Disclosed is a solution including an aromatic bis (ether dicarboxylic acid) component, an organic diamine component and a solvent system including a water-soluble organic solvent component, which may be a dipolar aprotic solvent or a monoalkyl ether of ethylene glycol or of diethylene glycol, and optionally water. The solution may be coated on a substrate and polymerized to form high quality polyetherimide coatings.Type: GrantFiled: November 30, 1978Date of Patent: July 29, 1980Assignee: General Electric CompanyInventors: Edith M. Boldebuck, Eugene G. Banucci
-
Patent number: 4210774Abstract: An electrical insulation body formed of a polymer binder highly filled with electrically non-conductive inorganic inert filler particles, including in excess of 85% of such particles. Such high loading is facilitated by grading the particles in nonhomogeneous sizes including relatively large ones and by use of polymer binders of relatively low viscosity.Type: GrantFiled: June 16, 1977Date of Patent: July 1, 1980Assignee: Electric Power Research Institute, Inc.Inventor: Elijah R. Perry
-
Patent number: 4207427Abstract: An electric power cable having a Milliken-type conductor comprising at least four sectors, the conductor being paper-insulated and oil filled and each sector comprising metal wires stranded together. Each wire is covered with a layer of a cross-linked synthetic resin having a thermal classification of 120.degree. C., a CEI resistance to abrasion of at least 50 cycles, a CEI thermal pressure value higher than 170.degree. C. and an insulating oil contaminating effect of substantially zero, such resin also being substantially completely volatizable by the heat used for joining cables by welding. Preferred resins are a polyvinyl-acetal resin, such as a polyvinyl-formal resin, cross-linked with a phenol resin and, optionally, a melamine resin and such with the addition of a blocked isocyanate.Type: GrantFiled: March 15, 1978Date of Patent: June 10, 1980Assignee: Industrie Pirelli S.p.A.Inventors: Germano Beretta, Cesare Seveso, Giulio Tuci
-
Patent number: 4189392Abstract: An electrical insulating material having anti-tracking properties has incorporated therein an erosion inhibiting fluorine-substituted compound. The electrical insulating material comprises a polymeric material having an anti-tracking filler and the fluorine-substituted compound is a hydrophobic, non-ionic compound having a fluorine-substituted aliphatic carbon chain linked to a group having an affinity for the polymeric material and/or the anti-tracking filler. The electrical insulating material may be used in high voltage applications where it is necessary to resist erosion and/or control leakage currents.Type: GrantFiled: July 26, 1977Date of Patent: February 19, 1980Inventors: Richard J. Penneck, John M. Senior
-
Patent number: 4188303Abstract: The invention relates to electrical insulators having increased resistance to partial discharges and electrical equipment comprising such electrical insulators.These electrical insulators are formed of a macromolecular material in which is incorporated a chelate which is a derivative of an organic compound of general formula: ##STR1## wherein: R is CH.sub.2 COOM or --OH,M is Na or H,x is an integer from 1 to 4,n is an integer from 0 to 4,the metal chelate being present in the material in an amount sufficient for promoting the extinction of partial discharges, said amount not exceeding a value which would alter the physical properties of the insulator such as the volume resistivity thereof.Type: GrantFiled: May 1, 1978Date of Patent: February 12, 1980Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)Inventors: Jean Barge, Raymond Catte, Gilbert Chapelet, Ai Bui, Pierre Dejean, Claude Huraux, Christian Mayoux
-
Patent number: 4168251Abstract: A method of forming an electrically insulating material having good mechanical properties by mixing a polyvinyl chloride polymer with a natural cellulose material in an amount of from 25 to 30% by weight to form a substantially homogeneous mixture consisting essentially of the polyvinyl chloride and natural cellulose material.Type: GrantFiled: February 13, 1978Date of Patent: September 18, 1979Assignee: Rehau Plastiks AG & Co.Inventors: Hartmut Schinzel, Ernst Wunderlich
-
Patent number: 4154892Abstract: Plasticized polymeric compositions based on vinyl chloride polymers and particularly useful as sheathings for electric cables and for similar applications are disclosed. The compositions contain very small amounts, from 0.05 to 3.0 parts, preferably from 0.05 to 1.0 part by weight of SiO.sub.2, very small amounts, from 0.0005 to 1.0 preferably from 0.001 to 0.5 part by weight of a phenol-type antioxidant, and optionally but not necessarily small amounts, from 0.5 to 4.0 parts, preferably from 0.05 to 2.0 parts, by weight of oxides and/or hydroxides of magnesium, aluminum, zinc and alkaline earth metals.Type: GrantFiled: August 12, 1977Date of Patent: May 15, 1979Assignee: Montedison S.p.A.Inventors: Flaviano Glatti, Gastone Slongo
-
Patent number: 4153752Abstract: Polyolefin compounds containing nitrile polysiloxane fluid which have improved electrical properties, and electrical conductors insulated therewith.Type: GrantFiled: October 19, 1977Date of Patent: May 8, 1979Assignee: General Electric CompanyInventors: Burton T. MacKenzie, Jr., Maurice Prober, Stanley E. Kiersztyn
-
Patent number: 4140818Abstract: Cured insulation compositions are rendered freely strippable from the encased conductors through the use of small amounts of (a) a dialkyl tin diester, (b) N,N'-ethylene bis-stearamide or similar waxy composition, and (c) certain 3-amido-1,2,4-triazoles.Type: GrantFiled: September 19, 1977Date of Patent: February 20, 1979Assignee: United States Steel CorporationInventor: Bharat Dave
-
Patent number: 4131714Abstract: Bonding compositions are disclosed as well as bondable articles utilizing such compositions. Such bonding compositions contain a crystalline polyester material and an amorphous polyester material and exhibit thermally stable bonding properties. Such bondable articles include bondable magnet wires comprising a conductor, an insulating base coat thereon and a bonding composition coated thereover containing a crystalline polyester material and an amorphous polyester material with the wires adapted to be shaped as coils and the like and thereafter bonded together with a bond which exhibits bond strength at elevated temperatures.Type: GrantFiled: December 22, 1975Date of Patent: December 26, 1978Assignee: Essex International, Inc.Inventors: Joseph Karkoski, Lionel J. Payette, John D. Shurboff
-
Patent number: 4129678Abstract: In a self-bondable insulated wire comprising a conductor and three resin insulating layers, the first resin insulating layer is formed with a resin selected from the group consisting of polyimide resins, polyamideimide resins and polyesterimide resins, the intermediate resin insulating layer is formed with a resin selected from the group consisting of polyvinyl formal resins and epoxy resins, and the outermost resin insulating layer is formed with a self-bondable resin of phenoxy series. Thus, a self-bondable insulated wire which is excellent in both oil resistance and heat resistance is obtained.Type: GrantFiled: May 26, 1977Date of Patent: December 12, 1978Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.Inventors: Masatoshi Seki, Moriichi Sato, Hideo Tsukioka, Etuo Ohe, Masatsugu Ogata, Akio Mitsuoka
-
Patent number: 4116941Abstract: Water-soluble polyesterimide resin compositions are prepared by in situ reaction of a mixture of glycol and triol with organic diacid and trimellitic anhydride/aromatic primary diamine. The product is reacted with additional trimellitic anhydride for use as wire enamel in water-base solution and chelated ethanolamine titanate is added to the solution as a crosslinking agent.Type: GrantFiled: June 1, 1976Date of Patent: September 26, 1978Assignee: Standard Oil Company, a corporation of IndianaInventor: Robert B. Hanson
-
Patent number: 4107383Abstract: Coconut shell flour is used as a filler in insulating compositions containing coconut shell flour filler for electric cables.Type: GrantFiled: February 14, 1977Date of Patent: August 15, 1978Inventor: Brian C. Reid
-
Patent number: 4097651Abstract: Novel polymers formed from the reaction of tetracarboxylic dianhydrides and hydrazines or hydrazides which may be cross-linkable by further reaction with a hydrazine or a hydrazide are disclosed.Type: GrantFiled: November 16, 1976Date of Patent: June 27, 1978Assignee: PPG Industries, Inc.Inventors: Karl F. Schimmel, Marco Wismer
-
Patent number: 4093774Abstract: The condensation product of oxalyl dihydrazide and 3,5-di-tertiary-butyl-4-hydroxy aryl carbonyl compounds is found to stabilize polyethylene against oxidative degradation. Stabilizer effectiveness is retained with the polymer in contact with copper. Stabilized polymers are effectively utilized as wire insulation.Type: GrantFiled: January 23, 1976Date of Patent: June 6, 1978Assignee: Bell Telephone Laboratories, IncorporatedInventors: Ray Lawson Hartless, Anthony Marion Trozzolo
-
Patent number: 4070524Abstract: Polyalkylenetrimellitate imide polyalkylenetrimellitate ester imides suitable for use as self-bonding varnish coatings for magnet wire, which can be produced by condensation of a trimellitic acid compound, a diprimary amine, an alkanol amine and a glycol.Type: GrantFiled: February 23, 1976Date of Patent: January 24, 1978Assignee: Standard Oil Company (Indiana)Inventor: Robert G. Keske
-
Patent number: 4059951Abstract: An electromechanical cable having individually jacketed non-metallic strain members.Type: GrantFiled: May 3, 1976Date of Patent: November 29, 1977Assignee: Consolidated Products CorporationInventor: Norman P. Roe
-
Patent number: 4046849Abstract: A method of compounding thermoplastic polymeric material and fillers, including additives and agents, and unique compounded products. The compounding method comprises mixing the thermoplastic polymeric material in particulate form with particulate filler, and in progressive sequence melting the surface portion of the thermoplastic particles, blending the filler with said molten surface portion of the thermoplastic particles and removing the resultant blended melt and filler from the surface of the thermoplastic particles. The mixing and melting, and the blending and removing, are continued until the filler is substantially assimilated into the polymeric material and the thermoplastic particles become substantially diminished by melting and blending, or the method can be carried further if desired. The compounded product thus prepared is characterized by a distinctive stratified consistency.Type: GrantFiled: July 29, 1974Date of Patent: September 6, 1977Assignee: General Electric CompanyInventors: Ray Clarence Lever, Edward Vincent Wilkus
-
Patent number: 4022945Abstract: An improved and economical fire retarding system for polymeric compositions comprising the combination of a halogen-containing hydrocarbon and an oxide of iron; a method of rendering polymeric compositions resistant to flame; and the flame resistant polymeric compositions and products comprising the same.Type: GrantFiled: June 9, 1975Date of Patent: May 10, 1977Assignee: General Electric CompanyInventors: Burton Thornley MacKenzie, Jr., Sidney Rothenberg