Abstract: The tensile properties and compressive strength of composites comprising epoxy resins and structural fibers are improved by the inclusion of a novel class of polynuclear aromatic diamine hardners exemplified by 4,4'-bis-(4-aminophenoxy) diphenyl sulfone and its analogs.

Abstract: A coating composition comprising (A) a polyester resin modified with a lactone having 6 to 8 ring carbon atoms (I) or a mixture of said lactone-modified polyester resin (I) and a non-modified polyester resin (II), the lactone content being from 5 to 40% by weight of the total polyester resin (in solid) (I) or (I+II), the number average molecular weight being 800.about.200 mg KOH/g and wherein the resinous acid value is 2.about.20 mg KOH/g, (B) a crosslinking agent, (C) a pigment and (D) optionally other resins. The composition is useful as an intercoat paint for automobile bodies.

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: Zinc rich coatings with improved corrosion resistance are provided by a composition consisting essentially of zinc pigment, thermoplastic polyhydroxyether or thermosetting epoxy resin, an organosilane or its hydrolyzates and optionally aluminum trihydrate, and one or more dispersing agents.

Abstract: High shielding efficiencies to emissions of electromagnetic interference are achieved with molding compositions comprised of thermosetting resins and a multi-component electroconductive filler system. Compounds having a combination of at least two conductive fillers provide shielding efficiencies of 30 dB of attenuation or more to electromagnetic emissions over a frequency range of 0.5 to 1000 Mhz without adversely affecting mechanical properties and processing capabilities.

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: The subject of the invention is a composition designed for production of slide elements and surfaces of machines and equipment, consisting of 100 parts by weight of low-molecular epoxy resin on the basis of epichlorohydrin and dian condensed with 3-15 parts by weight of phenol-formaldehyde resin modified with furfuryl alcohol, 2-15 parts by weight of an organic diluent, 15-100 parts by weight of the known inorganic fillers and, optionally 2-20 parts by weight of a polymeric material of lubricating properties in powder form. The composition is obtained as a result of the condensation of resins at a temperature of 150.degree.-170.degree. C. and the introduction into the post-reaction mixture of organic diluents and inorganic fillers at a temperature of about 100.degree. C. and optionally, the introduction of a polymeric material at a temperature of 50.degree. C.

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

Abstract: The present invention relates to an epichlorohydrin elastomer composition having an improved ageing resistance.This composition comprises 100 parts by weight of epichlorohydrin homopolymer or copolymer, 0.5 to 20 parts by weight of a plasticizer such as stearic acid, 1 to 150 parts by weight of a reinforcing filler constituted by a slightly agglomerated, medium structure carbon black having an average particle size of 200 to 280 microns and 0.5 to 7.5 parts by weight of a first acid acceptor constituted e.g. by zinc or calcium stearate, 0.5 to 7.5 parts by weight of a second acid acceptor constituted e.g. by lead oxide Pb.sub.3 O.sub.4, 0.5 to 5.5 parts by weight of at least one protection agent constituted by an organic compound with conjugated aromatic cycles containing amine or phenol functions and/or by an alkyl or aryl dithiocarbamate metal salt and 0.5 to 5.5 parts by weight of a vulcanizing agent preferably constituted by hexamethylene diamine carbamate.

Abstract: A powder having a negative coefficient of linear thermal expansion and sealing compositions containing the same are disclosed wherein the powder is a .beta.-eucryptite particle having on the surface thereof a layer of tin oxide, titanium oxide, and/or zirconium oxide.

Abstract: A zinc-rich coating for use on metallic substrates contains particulate zinc, thermoplastic polyhydroxyether and zinc phosphosilicate.

Abstract: An improved method of manufacturing electrical and electronic circuits is provided wherein an improved conductive ink is employed to define the pathways of current flow. This improved conductive ink is comprised of conductive particles, thermosetting binder and a multifunctional isocyanate. The isocyanate provides cross-linking between the conductive ink binder and the surface upon which the ink is applied and establishes a bond with enhanced moisture durability.

Abstract: Ink compositions especially suitable for printing electronic circuit patterns on a substrate such as a flexible polyester substrate; methods for developing electrolessly and electrolytically the circuit configurations as articles of manufacture; flexographic printing with the ink composition has been disclosed as the preferred method.

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.

Abstract: A coating composition for a metal substrate having excellent adhesion, corrosion resistance and welding property which comprises (A) an epoxy resin, (B) an organic phosphorus compound, (C) zinc powder, of which a portion being replaceable by (E) a solid electroconductive material, and (D) a magnesium compound dispersed in a liquid medium, the weight proportion of the components (A) and (B) being from 45:55 to 95:5, the content of the component (C) corresponding to from 30 to 95% by weight based on the total weight of the non-volatile components in the composition and the content of the component (D) being from 0.1 to 5% by weight based on the total weight of the non-volatile components in the composition.

Abstract: Powder primer compositions of the kind consisting essentially of a blend of an epoxy functional film-forming resin with a curing agent, exhibit improved corrosion resistance under powder topcoating compositions when zinc oxide and a dicarboxylic acid are added.

Abstract: A two-package solventless rust preventive material comprises (A) a sprayable component essentially containing a liquid epoxy resin and a liquid polycarboxylic acid anhydride and (B) a sprayable component essentially containing a liquid primary or secondary amino compound and a curing accelerator, at least one of said components (A) and (B) essentially comprising a non-reactive epoxy resin diluent having a molecular weight of 300 to 4,000 and an electrically conductive powder.

Abstract: A high solids coating composition that dries rapidly to a tack-free finish and cures under ambient temperature conditions to a durable finish useful for metals, plastics, wood, fiberglass reinforced plastics; the coating composition is used as a finish for automobiles, trucks, trailers, tractors, appliances and airplanes and also used to refinish automobiles and trucks; the film forming polymer of the coating composition has a backbone of polymerized monomers of an alkyl methacrylate such as methyl methacrylate or styrene, an alkyl acrylate and hydroxyl containing monomers such as a hydroxy alkyl acrylate or a hydroxy alkyl methacrylate and has attached thereto pendant drying oil fatty acid groups to provide the composition with ambient curing characteristics; wherein these drying oil fatty acid groups are attached by a reaction of the carboxyl group of the drying oil fatty acid and pendant hydroxyl group of the polymer backbone.