Abstract: Ion implanted polydiacetylenes prepared by implanting ions into substituted polydiacetylenes at fluence levels from about 1.times.10.sup.13 ions/cm.sup.2 to about 1.times.10.sup.17 ions/cm.sup.2 are disclosed. Ion implanted polydiacetylenes exhibit electrical and/or optical properties which are different from those of untreated polydiacetylenes.

Abstract: Electrically conductive ceramic having the composition La.sub.x Ca.sub.y MnO.sub.3+.DELTA. characterized by x= 0.44 to 0.48, Y= 0.42 to 0.50 and the sum of the mol numbers of La and Ca is between 1 to 15% (preferably about 10%) smaller than the mol number of Mn.

Abstract: In order to maintain the long term reliability of an electrical connection subjected to difficult environmental conditions, such as in the engine compartment of a motor vehicle, a paste-like preparation is provided for application at the conductively mating surfaces of the connection. A first embodiment of the preparation includes water, glycerin, a thixotropic agent and a hydrophilic substance, such as calcium chloride or lithium chloride, exhibiting sufficient hydrophilic action and in sufficient quantity as to maintain the preparation in a fluid state by absorbing moisture from the ambient atmosphere. Variants of the preparation include, as one or more additional ingredients, acetic acid and/or powdered graphite or metallic powder or flakes of high conductivity such as copper, aluminum or silver. A second and presently preferred embodiment of the preparation includes detergent, ethylene glycol, fine sand and powdered graphite in conjunction with a high concentration of calcium chloride or lithium chloride.

Abstract: Members, such as bearings, gaskets, electrical conductors and the like, as well as containing coatings, made from graphite intercalated with a metal halide exhibit superior stability except when used or stored in an extremely humid atmosphere. In a humid atmosphere these members and coatings tend to swell, crack and develop a corrosion layer over time. In accordance with the present invention, however, members and coatings made from intercalated graphite mixed with from 2 vol. % to about 30 vol. % of a metal powder do not exhibit this environmental instability.

Abstract: Curable conductive rubber blends of (A) a Masterbatch blend of an (a) dispersing component having a limited compatibility with rubber and (b) a conductor selected from conductive carbon blacks and metal powders, is (B) blended with (c) a rubber, and the resulting conductive blend is then cured/molded as desired. The technique provides a method/product uniformly electrically conductive of very low resistivity with quite modest amounts of conductive filler.

Abstract: A functional organic-inorganic composite amorphous material obtained by adding to an organic metal compound of silicon or germanium capable of being made amorphous by hydrolysis and dehydrating condensation, functional organic molecules soluble in a solvent capable of dissolving said organic metal compound, together with the solvent, followed by hydrolysis and dehydrating condensation to form an integrated composite.

Abstract: This invention relates to thick film base metal resistive paints for firing on a substrate to form a resistor having a temperature coefficient of resistance within .+-.100 ppm/.degree.C., while providing a means to selectively blend the resistive paint to provide a wide range of decade resistivities from less than 10 ohms/square to more than 1K ohms/square. The sheet resistance and TCR are controlled by mixing a glass frit from at least one of a first and second glass material; with TiSi.sub.2 ; and at least one of Ti.sub.5 Si.sub.3 and AL.sub.2 O.sub.3 ; and a screening agent, for subsequent screening onto a substrate and firing in an inert atmosphere at a peak temperature of about 900.degree. C. The first glass material comprises, by weight, 5 to 10% SiO.sub.2 ; 30 to 50% BaO; 40 to 60% B.sub.2 O.sub.3 and 1 to 5% CuO. The second glass material comprises, by weight, 50 to 70% B.sub.2 O.sub.3 ; 25 to 45% SrO; and 2 to 10% SiO.sub.2.

Abstract: A reactive gas sensor which utilizes an electrically conductive polymer composite which comprises an inner layer of an electrically conductive polymer, intermediate layers of a polymer which exhibits a low degree of gas permeability, and protective outer layers of a polymer which exhibits a low degree of moisture permeability. The preferred polymers for the intermediate layers are ethylene vinyl alcohol copolymers and polyvinylidene chloride. The sensor also includes means for measuring the resistance of the electrically conductive polymer.

Abstract: A delayed co-initiation process for preparing polyol blends comprising(a) oxyalkylating a first initiator compound to obtain a polyol with a predetermined equivalent weight; and(b) adding a second initiator which may be the same as or different from the first and oxyalkylating to obtain a polyol with a predetermined equivalent weight based upon the second initiator.The resultant polyols are used in the preparation of polyurethane foams.

Abstract: Thick film conductor compositions comprising an admixture of finely divided particles ofA. noble metal, noble metal alloy or mixtures thereof, andB. inorganic binder comprising a glass corresponding to the formula Bi.sub.4 Si.sub.3-x Ge.sub.x O.sub.12, having ZnO dissolved therein, andC. A glass bleed-out inhibitor selected from pyrochlore-related oxides, metal resinates and mixtures thereof, all of A through C being dispersed inD. organic medium.

Abstract: An improved procedure is provided for increasing the electrical conductivity of graphite via intercalation. It has been found that fully halogenated hydrocarbons (as described) have the ability to substantially aid the intercalation of graphite by previously known intercalant mixtures of (a) fluorosulfonic acid, chlorosulfonic acid, or mixtures thereof, and (b) a boron trihalide, a tetrahalide of a Group IV element, a pentahalide of a Group V element, or mixtures thereof. The presence of a fully halogenated hydrocarbon, such as carbon tetrachloride, during the graphite intercalation reaction has been found to expedite the rate at which intercalation takes place and possibly enables the achievement of a greater electrical conductivity than would have otherwise been obtained. In a preferred embodiment the graphite carbon is present within a carbonaceous fibrous material at the time of its intercalation and the resulting product is substantially electrically oriented along the axis of the fiber.

Abstract: A conductive elastomeric ink is described comprised of very fine nickel particles admixed in a silicone binder. The ink has utility in elastomeric switch control devices, printed circuits and the like.

Abstract: A new class of organic superconductors having the formula (ET).sub.2 MX.sub.2 wherein ET represents bis(ethylenedithio)-tetrathiafulvalene, M is a metal such as Au, Ag, In, Tl, Rb, Pd and the like and X is a halide. The superconductor (ET).sub.2 AuI.sub.2 exhibits a transition temperature of 5 K which is high for organic superconductors.

Abstract: The present invention relates to a cathodic protection system for reinforced concrete structures, having reinforced steel embedded in the concrete mix. The system includes an electrically conductive coating composition applied in fluid form over an outer surface of the concrete mix. The coating composition, when dry, comprises a permeable binder material through which moisture permeates preventing entrapment of moisture in the reinforced concrete structure. The composition further includes a predetermined amount of electrically conductive filler material uniformly distributed in the binder material whereby the coating composition has a predetermined value of resitivity. The coating composition protects the reinforced concrete structure from corrosion when electrical energy flows through the coating composition.

Abstract: An improved procedure is provided for increasing the electrical conductivity of graphite via intercalation. It has been found that sulfur trioxide has the ability to substantially aid the intercalation of graphite by previously known intercalants such as (a) fluorosulfonic acid, chlorosulfonic acid, or mixtures thereof, (b) a boron trihalide, a tetrahalide of a Group IV element, a pentahalide of a Group V element, or mixtures thereof, and (c) mixtures of (a) and (b). Such presence of sulfur trioxide during the graphite intercalation reaction has been found to expedite the rate at which intercalation takes place and possibly enables the achievement of a greater electrical conductivity than would have otherwise been obtained. In a preferred embodiment the graphitic carbon is present within a carbonaceous fibrous material at the time of its intercalation and the resulting product is substantially electrically oriented along the axis of the fiber.

Abstract: A foamable antistatic polymer composition is provided comprising a thermoplastic polymer, an elastomeric polymer, conductive carbon black having BET surface area of at least 500 m.sup.2 /g and an amount of a blowing agent effective to expand said composition.

Abstract: A heat-sensitive electroresistive composite and a thermostatic heating unit made from the composite. The heat-sensitive electroresistive composites have the property of showing an abrupt variation in electric resistance depending on temperature, and they include organic compounds containing a plural number of alkylene oxides as the unit structure in their molecules and fine pieces of carbon in the form of powder, fiber, whiskers, etc. The above-mentioned organic compounds may be normal chain polyalkylene oxide and its derivatives or cyclic ether compounds. The mixing ratio of organic compounds to the fine pieces of carbon is, for example, 100 to 10-80, but the mixing ratio is not necessarily limited to the range for the other types of organic compounds and fine pieces of carbons. The thermostatic heating units are formed by sealing the heat-sensitive electroresistive composites together with electrodes within insulators.

Abstract: An epoxyester linear block oligomer made with n-1 moles fatty acid units terminated with carboxylic acid groups and n moles of epoxy oligomer, when filled with carbon black, is a particularly effective electrically conductive primer for use over organic-based composites to be electrostatically painted.

Abstract: A copper conductive paint for use on a porcelanized metal substrate, which comprises a powder mixture of 82 to 98.5% copper, 0.5 to 12% copper hydroxide, and 1 to 6% non-reducable borosilicate glass frit. 75 to 90 percent of the powder mixture is blended with 10 to 25 percent screening agent to form the copper conductive paint herein disclosed. The copper conductive paint is then screened and fired upon a porcelainized metal substrate in an inert atmosphere at approximately 900.degree. C. to form a copper conductor exhibiting improved adhesion characteristics.

Abstract: Methods and formable compositions for fabricating electrically conductive articles comprising cofacially stacking organomacrocycles and as cofacially stacking phthalocyanines, in which a composition comprising a cofacially stacking phthalocyanine in strong Bronsted acid is formed into a desired shape such as a fiber or film, solidified by removal of the solvent, and provided in fractional valence state.