Abstract: A balancing putty for use in balancing rotation of a rotary part including:(a) an epoxy resin;(b) a curing agent capable of curing the epoxy resin when heated at a temperature of 60.degree. C. or more,(c) a first, finely divided inorganic filler having a specific gravity of 4.0 g/cm.sup.3 or more; and(d) a second, finely divided inorganic filler having a specific gravity of less than 4.0 g/cm.sup.3, the balancing putty having a density of at least 2.0 g/cm.sup.3 and a consistency of 1-12 mm in terms of penetration.

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.

Abstract: A thermosetting insulating resin paste including 100 parts by weight of an epoxy resin containing a diglycidyl type liquid epoxy resin as a main component and based on the parts by weight of the epoxy resin, 0.5 to 10 parts by weight of dicyandiamide as a setting agent. It further contains 1 to 15 parts by weight of a phenoxy resin, 0.1 to 8 parts by weight of 2-phenyl-4-methyl-5-hydroxymethylimidazole and/or 2-phenyl-4,5-dihydroxymethylimidazole as a setting accelerator as well as 50 to 200 parts by weight of a thermally conductive filler. This insulating resin paste exhibits a long pot life and can be set in a short time at a low temperature without generating any voids during the setting, so that it enables the die bonding process in the production of semiconductor devices to be performed as part of the production line. It also allows a smaller device to be used in this process.

Abstract: A process is disclosed for preparing an aqueous paint composition including the steps of(a) mixing a pigment powder having a particle size less than about 20 micrometers, a cross-linking agent and an epoxy resin to form a liquid, solvent-free paste;(b) reacting the resultant paste with a secondary amine to provide at least one N-H function per epoxy group of the epoxy resin; and(c) neutralizing the resulting suspension of particles coated with an epoxy-amine adduct and a cross-linking agent.Also provided is a coating process employing the invention aqueous paint composition containing a transesterification-promoting metal compound.

Abstract: An aluminum part joint structure including at least two casted joint pieces to be assembled together, each of the pieces being formed with joint surfaces. Adhesive agent layer is provided between the joint surfaces. The adhesive agent comprises 45 to 54 wt % of epoxy resin, 30 to 40 wt % of aluminum particles each having diameter of 0.1 to 0.2 mm, and 4 to 6 wt % of guanidine derivative.

Abstract: The present invention comprises a solid composition having low magnetic signature. The composition comprises a plurality of high density, very low magnetic signature bodies or particles incorporated in a non-magnetic matrix of lesser density.

Abstract: A coating composition for the protection of metallic and non-metallic substrates against corrosion, comprising a film-forming polymer; at least one particulate metallic pigment in an amount ranging from about 30% to about 60% by weight based on the total weight of the composition; an agent for control of electrical conductive characteristics having an oil absorption value of less than 20 (determined by ASTM standard D 281-84), the volumetric ratio of the control agent to the metallic pigment ranging from 0.7:1 to 1.25:1; an agent for control of rheological characteristics; and at least one solvent compatible with the polymer.

Abstract: A piezoelectric pressure-sensitive element comprising a dispersion of a dipolarly oriented ferroelectric ceramic powder in a cured product of a composition comprised of an epoxy resin having at least two epoxy groups in the molecules, a compound having defined numbers of amino groups, benzene rings, carbonyl groups and methylene groups, and a crosslinking agent. A methd for making such a piezoelectric pressure-sensitive element is also described, in which the resin composition comprising a ferroelectric ceramic powder is thermally cured and applied with an electric field at a high temperature to cause dipolar orientation of at least the ceramic powder.

Abstract: Disclosed are compositions useful in fabricating blocks or inserts for inductors comprising:(a) about 98 percent to about 99.5 percent by weight of a high purity, annealed electrolytically prepared iron powder; and(b) about 0.5 percent to about 2 percent of an insulating polymer binder selected from the group consisting of epoxies, flourocarbon, hot melt adhesives, and mixtures thereof;wherein said iron powder has a specific surface area of less than about 0.25 m.sup.2 /g and a carbon content of less than about 0.01 percent; andwherein said composition after pressing at at least about 30 Tsi demonstrates a maximum of 5 percent regression in permeability and a total core loss of less than about 0.8 to about 1.2 ohms between 10 KHz and 500 KHz. Blocks and inserts made from such compositions, as well as methods of manufacturing such inserts, are also disclosed.

Abstract: Described herein is a composition which contains a specific group of hardeners, an epoxy resin and a thermoplastic polymer. When combined with a structural fiber the composition produces composites which have improved impact resistance, improved tensile properties and high compressive properties.

Abstract: Homogeneous, nonporous ceramic fibers containing at least one magnetically-unaligned, microcrystaline transition metal oxide spinel phase. The ceramic fibers may be used in polymeric, ceramic and metallic composites. Said ceramic spinel is produced by dispersing soluble inorganic and transition metal compounds in an aqueous mixture, concentrating to produce a viscous concentrate, shaping into the desired article, gelling the shaped article, and heating to produce the transition metal spinel article. Beads, bubbles, flakes, microspheres, films and granules may be made as well as fibers.

Abstract: An electrically conductive adherent film-forming adhesive which is rapidly curable thermally from a flowable liquid to an adherent and coherent solid at temperatures below about 120.degree. C. and with a specific resistivity of less than about 0.001 ohm-cm. when cured, and comprising a uniform mixture with a formulation containing a liquid epoxy base resin, a hardening component for the epoxy resin consisting essentially of B.multidot.CF.sub.3 SO.sub.3 H, and silver metallic powder in an amount ranging from about 75% to 85%, with the powder having a substantial uniform particle size of less than about 20 microns (0.8 mil) in diameter.

Abstract: A method of cationic electrodeposition, electrocoated articles and novel electrocoating compositions are disclosed. The compositions comprise a cationic resin containing blocked isocyanate functionality and are capable of being electrodeposited over rough steel and producing extremely smooth films upon curing.

Abstract: A vibration damping material having an improved mechanical strength and excellent vibration damping characteristic is disclosed.The material is made by usage of composition of 40 to 90 weight percent of iron oxide particles 0.1 to 100 .mu.m in size and 60 to 10 weight percent of resin.

Abstract: The present invention relates to a resin molding compound for sealing electronic parts.In general, electronic parts are sealed in ceramic packages or synthetic resin molding compounds in order to protect them from an external circumstance in the use thereof.In many cases, materials consisting of synthetic resins and inorganic fillers mainly comprising silicon oxide have been used as sealing materials for synthetic resin molding compounds.However, a defect has occurred in that since an infinitesimal quantity of radioactive elements such as uranium and thorium is contained in inorganic fillers, a memory element in electronic parts produces misactions by alpha-rays radiated from radioactive elements according to circumstances and thereby the fidelity of electronic parts is greatly influenced.

Abstract: This invention provides an insulating protective material effective for protection of electronic and electric devices such as electronics elements. This insulating protective material contains at least one hydrous oxide of a metal which has ion exchange properties together with a fusion bonding component such as low-melting glass, epoxy resin, phenolic resin, silicone resin, etc. and a filler such as fused silica, .beta.-eucryptite, glass fiber, glass beads, etc.Said specific hydrous oxide can be used together with a sulfur-containing organic high molecular weight compound.The hydrous oxides used in protective materials as a sealing material for electronic and electric devices can capture an ionic impurity eluted from the components of the protective material and fix it therein thereby to provide stable electronic materials excellent in performance.

Abstract: A polyester composition according to the subject invention is composed of thermoplastic polyesters and the titanium dioxide and/or aluminum oxide having specific particle diameters.The polyester composition provides the molded articles which display reduced warpage.The polyester composition has high plating characteristic and provide superior metal-plated moldings.

Abstract: An adhesive composition comprising, by weight, (1) 100 parts of triglycidyl ether of trisphenol, (2) 0-40 parts of a polyfunctional epoxy resin, (3) a diamine type curing agent selected from (a) an aromatic diamine compound and (b) a reaction product having an amino group at each terminal thereof, prepared by reacting together an aromatic diamine compound, divinylsilane compound and bismaleimide compound, and, if desired, (4) a powdery inorganic filler.

Abstract: Addition of waxes or wax-like substances, in conjunction with metal salts or metal complexes of organic compounds, to powder coating compositions based on epoxy resins and carboxyl-terminated polyesters affords a matting effect without substantially impairing the other properties of said coating composition.

Abstract: A radiation shield superior to lead in absorbing/attenuating X-rays and the like made by molding with a resin binder a mixture of powders, namely lead oxide derived from scrap storage batteries, slag derived from electrorefining of aluminum, nickel or chromium as a by-product, and molybdenite. The molded shield may also contain zeolite for gas absorption and a reinforcing core of glass fabric.

Abstract: A coating composition comprises the following components dissolved in an organic solvent therefor:(I) an addition copolymer derived from ethylenically unsaturated monomers and containing (a) from 0.8 to 8.0% by weight, based on the total weight of the polymer, of free carboxyl groups, and, optionally, (b) tertiary amino groups;(II) one or more polyepoxide compounds present in an amount to provide from 0.2 to 2 epoxy groups for each carboxy group in the addition copolymer;(III) an aluminum, titanium or zirconium alkoxide or complex thereof with a chelating agent therefor, present in an amount such that the amount of metal is from 0.05 to 2.0% by weight, based on the weight of the addition copolymer; and(IV) optionally, a tertiary amino compound; provided that component (IV) is present when the addition copolymer (I) does not contain tertiary amino groups and that the total amount of tertiary amino groups present in the composition provides from 0.

Abstract: A bonding assistant for a support material consists of an organic binder ch comprises a mixture of a saturated polyester and an isophorone diisocyanate containing masked isocyanate groups apart from OH groups, said mixture being present in a proportion of from 50 to 80 percent by weight of the total mixture, the binder having filler particles of a particle size less than 15 .mu.m dispersed therein in a proportion of from 10 to 50 percent by weight.

Abstract: Zinc rich, solvent resistant and corrosion resistant coatings are prepared by blending zinc pigment, a thermoplastic polyhydroxyether and an organic dianhydride or polyanhydride.

Abstract: A conductive paste and an electroconductive body fabricated from the paste, in which the paste comprises inorganic non-metallic particles coated with silver, silver particles and an organic binder, or inorganic non-metallic particles coated with silver, silver particles, particles of glassy material and an organic vehicle. An electroconductive body comprises silver particles, and inorganic non-metallic particles coated with silver, both embedded in a matrix of organic material or of glassy material. The silver particles and silver-coated inorganic non-metallic particles are in effective contacting relationship within the matrix. Also disclosed are a silver-coated glass bead, for incorporation in paste and an electroconductive body, and methods for fabricating an electroconductive body. The electroconductive bodies are useful, for example, as termination elements for capacitors, and as internal conductive elements in capacitors of the type used in thick-film technology applications.

Abstract: This manufacturing process consists in forming a passivation layer on manganese pigments and thereafter mixing the latter with a resin to form a paint. This paint is electrically conductive since the passivation layer is based on chromate, Mn/Fe phosphate or Zn phosphate. These pigments preferably have a degree of purity equal to or greater than 99.9%.

Abstract: A stable, mechanically formed brazing shape comprising a polymer matrix which may be composed of thermosetting and thermoplastic resins in various combinations and braze alloys or compounds which when formed by extrusion, dried, and cured is able to replace brazing pastes, loose powders and tapes in many brazing applications especially those requiring the deposition of a uniform amount of alloy in the brazed or bonded joint. The fabrication of shapes of various cross sections by extrusion is also described.

Abstract: A thermosetting composition for use in the formation of a magnetizable film on a substrate is disclosed herein, which has improved resistance to frictional wear and abrasion, and improved impact durability. The composition comprises a heat-curable polymer resin, magnetizable particles, a fatty ester, and sufficient solvent to provide a viscosity of from about 200 to about 600 centipoise at about 24.degree. C. The method of preparation of the composition as well as its use are also disclosed.

Abstract: An adhesive is provided which comprises a thixotropic binder (24) containing metallic particles (23) of discrete size and specific density concentration. When used to bond faying surfaces (13 and 21/10 and 21) this adhesive is capable of conducting electrical currents on the order of 200,000 amps while withstanding structural loads on the order of 5000 psi. It has particular application in a highly volatile environment such as the skin panel (10) of an aircraft component housing an integral fuel tank (12). Lightning strike currents are thereby conducted in a controlled path (P) adjacent the exterior surfaces (S) of the component as defined by the parts (10, 13, 17 and 21) and arcing inside the fuel tank (12) is avoided.

Abstract: A conductive paste and an electroconductive body fabricated from the paste, in which the paste comprises inorganic non-metallic particles coated with silver, silver particles and an organic binder, or inorganic non-metallic particles coated with silver, silver particles, particles of glassy material and an organic vehicle. An electroconductive body comprises silver particles, and inorganic non-metallic particles coated with silver, both embedded in a matrix of organic material or of glassy material. The silver particles and silver-coated inorganic non-metallic particles are in effective contacting relationship within the matrix. Also disclosed are a silver-coated glass bead, for incorporation in paste and an electroconductive body, and methods for fabricating an electroconductive body. The electroconductive bodies are useful, for example, as termination elements for capacitors, and as internal conductive elements in capacitors of the type used in thick-film technology applications.

Abstract: Paint formulations employing zinc and manganomanganic oxide fume or a material containing predominantly manganomanganic oxide fume as a corrosion inhibitive system.

Abstract: Manganomanganic oxide fume or a material containing manganomanganic oxide fume as its principle ingredient is used as a color pigment in the formulation of solvent-base paints.

Abstract: An adsorbent, which is prepared by subjecting to curing a mixture consisting of (a) one part by weight of at least one member selected from the group consisting of titanium oxide hydrate, zirconium oxide hydrate and tin oxide hydrate and of (b) about 1/10 to 3 parts by weight of an epoxy, unsaturated polyester or polyurethane resin.The adsorbent can be used as an adsorbent for a great variety of anions and cations and especially as the adsorbent for phosphate ion.The adsorbent displays also improved chemical resistance, resistant to acids and alkalis, and can be subjected to repeated desorption and regeneration procedures without causing any deterioration of its adsorptive capacity, thus permitting the repeated usage over a long period of time.

Abstract: A thermally conductive composition comprises an essentially homogeneous mixture of sand or sand-like particulate material with a binder, wherein the binder comprises an organic adhesive having an inorganic fine particle filler therein. The binder is present in at least an amount sufficient to begin to form a binder meniscus between adjacent sand particles, while the filler is present in the binder in an amount which significantly increases the effective thermal conductivity of the composition as compared to the same composition without filler.