Abstract: Controlling the uranium extraction coefficient in uranium extraction processes involving wet process phosphoric acid feed is accomplished by monitoring the oxidation potential of the raffinate acid stream exiting the extractor, and maintaining the oxidation potential of the raffinate at a value above 350 mV.

Abstract: An etching solution for III/V semiconductor material, such as gallium arsenide, consists essentially of: 20 to 90 vol. % of phosphoric acid solution; 15 to 80 vol. % of hydrogen peroxide solution; 0 to 60 vol. % of water; and an amount of fluorine ion effective to provide at least 0.01 mole of fluorine ion per liter of solution, said solution being effective to etch without evolving a gaseous product.

Abstract: A water soluble addition copolymer is formed by reaction admixing a monomer having a pendant vinyl group attached to at least one ring structure selected from the group consisting of nitrogen containing heterocyclic ring structures and aromatic ring structures and their mixtures, and a monomer selected from the group consisting of maleic anhydride, fumaronitrile, tetracyanoethylene, maleimide and their mixtures, where such addition copolymer can be used alone, as curable an insulating coating composition, or can be added to a resin, to form a curable resinous insulating coating composition.

Abstract: A high bond strength, water reducible modified polyester resin composition is disclosed which comprises: (I) a polyester resin consisting essentially of the reaction product of a: (a) aromatic dicarboxylic acid or mixtures thereof; (b) tris (2 hydroxy alkyl) isocyanurate, organic polyhydric alcohol containing more than two hydroxyl groups or mixtures thereof; (c) saturated fatty acid, and (d) tricarboxylic acid and II additive consisting essentially of: (a) 8 wt. % to 30 wt. %, based on 100% polyester solids, of an aqueous solution of a water soluble, unmodified phenol-formaldehyde resin having an average molecular weight of below about 275; and (b) 20 wt. % to 55 wt. %, based on the polyester solids of water soluble urea-formaldehyde condensation products.

Abstract: A sprayable, solventless bracing composition is made from the admixture of 100 parts of bisphenol A epoxy resin, up to about 8 parts of a coloring pigment, about 0.5 to about 4 parts of a thixotropic agent, about 100 to about 200 parts of butadiene/acrylonitrile polymer, and about 20 to about 40 parts of an amine terminated curing agent.

Abstract: A bifunctional air electrode for use in electrochemical energy cells is made, comprising a hydrophilic layer and a hydrophobic layer, where the hydrophilic layer essentially comprises a hydrophilic composite which includes:(i) carbon;(ii) elemental iron particles having a particle size of between about 25 microns and about 700 microns diameter;(iii) an oxygen evolution material;(iv) a nonwetting agent; and(v) a catalyst, where at least one current collector is formed into said composite.

Abstract: A method of loading active battery material into porous, flexible, metallic battery plaques, comprises the following steps: precipitating nickel hydroxide active material within the plaque, by making the plaque cathodic, at a high current density, in an electro-precipitation cell also containing a consumable nickel anode and a solution comprising nickel nitrate, having a pH of between 2.0 and 2.8; electrochemically oxidizing the precipitate in caustic formation solution; and repeating the electro-precipitation step at a low current density.

Abstract: A resin impregnated spacer, useful for bracing electrical conductors, comprises a porous, flexible, heat resistant material impregnated with an epoxy resin containing Lewis acid curing agent and an effective amount of dibutylphosphite.

Abstract: A process to restore solvent after the stripping step in recovering uranium from phosphoric acid, comprises passing stripped, water-immiscible organic extraction solvent, containing contaminants and having a lowered uranium extraction coefficient value, through a water scrub, to scrub contaminants from the organic solvent and raise its uranium extraction coefficient. The scrubbed solvent is then passed back to the extractor and the contaminated water is passed into at least one purification means and then back to the scrubber.

Abstract: A high capacity battery material is made, consisting essentially of hydrated Ni(II) hydroxide, and about 5 wt. % to about 40 wt. % of Ni(IV) hydrated oxide interlayer doped with alkali metal cations selected from potassium, sodium and lithium cations.

Abstract: A resin impregnated, B-staged sheet material free of crystal formations, useful for metal clad and unclad laminate production, is made by impregnating a sheet containing a resin comprising epoxy resin and an amount of curing agent effective to cure the epoxy resin to the C-stage, where the curing agent consists essentially of the reaction product of dicyandiamide and an aminophylic reagent selected from the group consisting of aldehydes, alkyl monoglycidyl ethers having the formula: ##STR1## where R=an alkyl group having from 1 to 4 carbon atoms, styrene oxide, ethylene oxide, propylene oxide, acetic anhydride, benzoyl chloride, acetyl chloride, and mixtures thereof, and then heating the impregnated sheet until the resin is in the B-stage.

Abstract: A solar cell structure is produced by a method comprising baking the solar cell, containing a gridded top layer of cuprous sulfide formed on a base of cadmium sulfide, for 20 minutes to 10 hours, to produce a copper doped CdS electrically insulating region in the cadmium sulfide base near the interface of the cuprous sulfide and the cadmium sulfide; removing the cuprous sulfide, and the copper doped CdS insulating region not covered by the grid, to provide a bare cadmium sulfide areas; and then forming a cuprous sulfide layer on the exposed areas not covered by the grid.

Abstract: A method of producing H.sub.2 and C.sub.2 H.sub.2 gases comprises the steps of drying a hydrocarbon biomass material to remove water without carbonization, reacting the dried hydrocarbon biomass with a stoichiometric excess of molten lithium metal to produce lithium salts comprising LiH and Li.sub.2 C.sub.2 and then hydrolyzing the lithium salts to produce a gaseous mixture comprising H.sub.2 and C.sub.2 H.sub.2.

Abstract: A method for concentrating and recovering uranium material from a solution containing uranium, comprises passing the solution through at least one semipermeable membrane system capable of concentrating uranium, to provide a uranium rich product.

Abstract: A method of recovering liquid from an emulsion formed in a liquid-liquid contacting process, where the emulsion comprises at least one of the liquids entrapped by water-permeable membranes, comprises: admixing water and the emulsion in a volume ratio of water:emulsion of between 0.5 to 4.5:1 and raising the temperature of the admixture to between about 45.degree. C. and 99.degree. C., to cause water permeation of the membranes, causing them to disintegrate and release liquid, forming a three-phase composition consisting essentially of the two liquids and the solids.

Abstract: A sprayable, solventless bracing composition is made from the admixture of 100 parts of bisphenol A epoxy resin, up to about 8 parts of a coloring pigment, about 0.5 to about 4 parts of a thixotropic agent, about 100 to about 200 parts of butadiene/acrylonitrile polymer, and about 20 to about 40 parts of an amine terminated curing agent.

Abstract: A method of making a ZnO powder composition, which can exhibit non-linear V-I characteristics, comprises the steps of: (1) mixing about 75 mole % to about 98 mole % of small, finely divided, solid ZnO and about 2 mole % to about 25 mole % of at least one small, finely divided, solid additive oxide effective to produce nonlinear characteristics, with an aqueous binder solution comprising an organic, water soluble fugitive binder, to provide a slurry; (2) simultaneously drying, mixing and agglomerating the slurried solids into a mass of larger substantially spherical particles containing the finely divided solids and binder; (3) pressing a mass of the agglomerated particles, to provide a cohesive pressed green body; and then (4) heating the pressed body, first at a temperature rate increase effective to slowly decompose and remove the fugitive binder from the body and then heating at a temperature of between 1,050.degree. C. to about 1,400.degree. C.

Abstract: A metal containing acidic solution, also containing humic acid impurities and contaminants, is purified by contacting the acidic solution with a scrubbing agent consisting essentially of a metal extractant and from about 50 vol.% to about 90 vol.% of a hydrocarbon, where the scrubbing agent interacts with impurities and contaminants in the acidic solution to form a sludge phase which is removed and a purified acid phase which can be fed into a metal recovery process.

Abstract: A high-current electrical machine, comprises a stationary and a moving member and at least one current collector brush disposed between the members and in frictional contact with one member; where the brush comprises a plurality of flexurally independent, metal fibers, and where a non-oxidizing gaseous medium containing water vapor, contacts the interface of frictional contact of the brush to provide a lubricating effect.

Abstract: A low temperature, fast curing epoxy insulating composition is made by low temperature mixing an epoxy resin with a carboxylic acid anhydride complex, the anhydride complex being the low temperature reaction product of a selected Lewis Acid catalyst and a carboxylic acid anhydride.