Abstract: Disclosed is an electrically conductive sintered silicon carbide body having an electric resistivity of not higher than 1 .OMEGA..multidot.cm, which is produced by(a) mixing(1) a first silicon carbide powder having a mean grain size of from 0.1 to 10 .mu.m with(2) a second silicon carbide powder having a mean grain size of not greater than 0.1 .mu.m prepared by(2-1) introducing a starting gas composed of a silane compound of silicon halide and a hydrocarbon into a plasma of a non-oxidative atmosphere, and(2-2) conducting gas phase reaction between the silane compound or silicon halide and the hydrocarbon while controlling the pressure of the reaction system within the range of from less than 1 atom to 0.1 torr, and(3) optionally, a carbon powder which is required for reducing oxides contained in both the first and second silicon carbide powders,(b) optionally reducing the oxides with the carbon, and(c) heating the resulting mixture for sintering. Also, processes of producing the same are disclosed.

Abstract: An electric conductive polyphenylene sulfide resin composition comprising: from 15 to 30% by weight of glass fiber with respect to the weight sum of polyphenylene sulfide resin and glass fiber taken as 100% by weight; and from 20 to 30% by volume of copper alloy fiber with respect to the volume sum of polyphenylene sulfide resin, glass fiber and copper alloy fiber taken as 100% by volume. The electric conductive polyphenylene resin composition is an optium material for enclosures for automobile electronics apparatuses which are disposed outside the passenger room.

Abstract: A polymer thick film ink which exhibits PTC behavior comprising an organic polymer which is crystalline, an active solvent suitable for dissolving the polymer, and carbon black which has a pH of less than 4.0. The ink is particularly useful in producing electrical devices such as heaters and circuit protection devices.

Abstract: Conductive metal powders having high conductivity with minimized silver migration are characterized in that an average composition is represented by Ag.sub.x M.sub.1-x (wherein M is at least one metal selected from Ni, Co, Cu and Fe; 0.01.ltoreq.x.ltoreq.0.4) and has a region wherein a silver concentration progressively increases on moving from the inner part toward the surface. The conductive metal powders, which are useful as leads, electrodes and shielding from electromagnetic interference are prepared by solidifying rapidly a molten metal having the specific composition.

Abstract: A thermally curable conductive polymer thick film composition comprising, by weight:(a) about 3-15 parts of at least one thermoplastic vinyl acetate/vinyl chloride/dicarboxylic acid multipolymer resin;(b) a second thermoplastic resin selected from the group consisting of:(i) about 1-6 parts of at least one thermoplastic polyurethane resin;(ii) about 2-10 parts of at least one thermoplastic polyester resin; or(iii) about 1-10 parts of a mixture of at least one thermoplastic polyurethane and at least one thermoplastic polyester resin;(c) about 0.05-1 parts of a tertiary amine;(d) an effective amount of at least one organic solvent capable of substantially dissolving (a), (b), and (c) ingredients; and(e) about 50-80 parts of silver flake.

Abstract: A thick film conductor composition adapted to be bonded to an aluminum nitride substrate is provided which comprises a sufficient amount of conductive metallic material to render the conductor composition electrically conductive when bonded to the substrate, a glass frit binder for the metallic material capable of being bonded to the substrate, and a lithium containing compound capable of reacting with the substrate upon heating so as to aid in adherently bonding the conductor composition to the aluminum nitride substrate. A thick film conductor bonded onto the surface of an aluminum nitride substrate as well as a method of producing the same are also provided.

Abstract: An electrically conductive epoxy-based adhesive. The epoxy is selected from the amine curing modified epoxy family consisting of a resin that is a combination of polyglycidylaminophenyl resin and polygylcidylether of phenylformaldehyde novalac resin family, and a catalyst that is a combination of one member from the aliphatic amide family plus one member from the aliphatic polyamine family. In one embodiment includes 17 parts by weight of the resin and 10 parts by weight of the catalyst. 73 parts by weight of a mixture of properly shaped silver flake particles are added. The resulting adhesive is curable at room temperature to provide a high-temperature, high-strength, electrically conductive adhesive.

Abstract: A fiber glass reinforced plastic can be in-mold coated utilizing a free radical peroxide initiated thermosetting composition of at least one polymerizable epoxy based oligomer having at least two acrylate groups, at least one copolymerizable ethylenically unsaturated monomer, at least one copolymerizable monoethylenically unsaturated compound having a --CO-- group and a --NH.sub.2, --NH--and/or --OH group, and other conventional components such as at least one zinc salt of a fatty acid, at least one accelerator, at least one filler, and the like. The thermosetting compositions of the present invention utilize a very low or nil amount of an adhesion agent such as a polyvinyl acetate and unexpectedly achieves better flow and good coverage at reduced coating weights.

Abstract: An anisotropically electroconductive adhesive composition preferably in the form of a film is proposed which comprises an insulating adhesive resin and preferably 0.1 to 30 parts by volume of amorphous carbon particles having a spherical particle configuration per 100 parts by volume of the resin. The amorphous carbon particles are prepared by carbonization of spherical particles of a heat-curable plastic resin and should have an average diameter of 5 to 50 .mu.m, specific gravity of 1.4 to 1.7, coefficient of linear thermal expansion of 2 to 5.times.10.sup.-6 /.degree. C. and, preferably, sphericity not exceeding 5 .mu.m. The amorphous carbon particles are chemically and mechanically stable so that the inventive adhesive composition can ensure high stability in the electrical connection between electrodes bonded therewith and insulation between adjacent electrodes.

Abstract: An electroconductive silicone rubber having a high electroconductivity and retaining the good workability in compounding and molding and excellent properties inherent in silicone rubbers in general can be obtained by compounding a curable organopolysiloxane composition comprising a gum-like diorganopolysiloxane, carbon black as a conductivity-imparting agent and a curing agent with a cured silicone rubber powder of spherical particle configuration having specified particle diameter and specified sphericity which partially replaces the diorganopolysiloxane gum.

Abstract: An improvement is described in microemulsion compositions containing an anionic detergent, one of the specified cosurfactants, a hydrocarbon ingredient and water which comprises the use of a water-insoluble odoriferous perfume as the essential hydrocarbon ingredient in a proportion sufficient to form either a dilute o/w microemulsion composition containing, by weight, 1% to 10% of an anionic detergent, 2% to 10% of cosurfactant, 0.4% to 10% of perfume and the balance water or a concentrated microemulsion composition containing, by weight 18% to 65% of anionic and nonionic detergent, 2% to 30% of cosurfactant, 10% to 50% of perfume and the balance water which upon dilution with water will yield said dilute o/w microemulsion composition.

Abstract: A material is provided for a polarizable electrode. The material comprises a porous carbon material of activated carbon, activated carbon fibers, carbon fibers or powdery carbon as a raw material, wherein the total amount of acid groups of said porous carbon materials is 0.45 to 4.0 .mu.eq/m.sup.2 based on the BET surface area of said carbon material. The material is produced by subjecting the porous carbon raw material to dry oxidation treatment in an oxygen atmosphere whereby the total amount of acid groups introduced into said porous carbon material is 0.45 to 4.0 .mu.eq/m.sup.2 based on the BET surface area of said material.

Abstract: An electrically conductive pressure sensitive adhesive is provided which is prepared by incorporating a conductive black filler into a pressure sensitive adhesive in such a manner as to impart electrical conductivity at a carbon concentration low enough to avoid adversely affecting the physical properties (such as tack) of the adhesive. By practice of the present invention, the carbon particles present in the adhesive are in the form of a carbon structure which optimizes the efficient employment of carbon by providing conductive pathways through the adhesive.

Abstract: A low resistance non-permeable backfill especially for use in vertical anode beds for the cathodic protection of subsurface metallic structures includes a mixture of portland cement, calcined fluid petroleum coke, micro-size carbon rods and high structure carbon black.

Abstract: Water-soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water-soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate, phosphonate or ester and/or a hydrophilic N-vinyl lactam for applications under hostile conditions.

Abstract: In accordance with the present invention, there are provided coating liquids for forming conductive coatings, which comprise (i) a zirconium oxysalt, (ii) a conductive substance and, if necessary, (iii) at least one member selected from non-sedimentary silica dispersion and silicon alkoxide or its derivative. The coating liquids, when coated on substrates, form thereon transparent conductive coatings which are excellent in transparency, scratch resistance, permanence properties and adhesion to the substrates and, moreover, excellent in antistatic effect. In particular, when the coating liquids for forming conductive coatings mentioned above are coated by the spray method on appropriate substrates followed by drying and/or heating, there are obtained face-plates for display devices, which have excellent regular reflection reducing effect (non-glare) and antistatic effect.

Abstract: In a resistance paste for the production of electric resistors consisting of a polymer binding there are dispersed electrically conductive particles, solvents and additives; in order to produce resistance layers which are electrically stable and resistant to organic substances such as fuels and oils within a temperature range of from -55.degree. C. to +160.degree. C., more than half of the solids contained in the polymer binder consists of a mixture ofa) fully etherified melamine resin,b) polyester resin containing hydroxyl groups andc) an acidic catalyst.

Abstract: A method for removing odor from an aqueous solution of polymeric quanternary ammonium salt solution containing residual aliphatic tertiary amine and choline chloride or derivative thereof, said process comprising adding a sufficient amount of a non-volatile, stable, polybasic acid to react with said choline chloride or derivative thereto to prevent the formation of aliphatic tertiary amine from said choline chloride or derivative thereof. The present invention is also directed to a process for the preparation of recording film by treating as ethylene oxide neutralized conductive quaternary polymer solution with orthophosphoric acid and coating the treated solution directly onto a substrate.

Abstract: A stable microemulsion cleaning composition is described, which, in the absence of opacifying component, appears clear to the eye, and which is especially useful for cleaning surfaces having oily or greasy soils thereon, which comprises synthetic organic detergent, water, co-surfactant of the described type, and perfume, which is the only "solvent". The concentrated detergent composition may be employed as is, or may be easily diluted with water to form a similarly clear and stable microemulsion. In process aspects of the invention both the concentrated and the diluted compositions may be employed to remove oily and greasy stains from substrates, such as normally shiny bathroom fixture and floor and wall surfaces, including tiles, by a "spray and wipe" process, which leaves the surface shiny. When the invented compositions are acidic they are useful for removing lime scale and soap scum from hard surfaces.Also described are processed for manufacturing and diluting the invented compositions.

Abstract: A method of treating a horse suffering from navicular disease which involves administering an amount of a composition including pentoxifylline in a daily dose for a sufficient period of time effective to alleviate lameness in horses resulting from navicular disease. A pharmaceutical composition including an effective amount of pentoxifylline and a pharmaceutically acceptable carrier for alleviating lameness resulting from navicular disease.