Abstract: Composition for preparing a polymer concrete, a method of protecting or reconditioning surfaces by treatment with the composition, the protected or reconditioned surfaces thus-treated, and multi-package systems for bringing the components of the composition to an application site, wherein the composition comprises a substantially non-aqueous slurry of (1) an aggregate material and (2) a monomer binder system effective to bind the aggregate, upon curing, into a polymer concrete, the binder system comprising (a) a liquid comonomer component, (b) a solid, thermoplastic macromonomer component dissolved in the comonomer and comprising a linear polymer terminated at one or both ends with a polymerizable end group, and (c) a polymerization catalyst.

Abstract: Novel polyurea/polyurethane two-component adhesive compositions are disclosed which comprise the reaction product of (a) a blend of an amine terminated polybutadiene and a polyhydroxybutadiene with (b) an aliphatic or aromatic di- or polyisocyanate and optionally chain extenders, tackifiers, coupling agents fillers and curingly effective amounts of catalyst.

Abstract: In a water cooled electrode assembly for an electric arc steel furnace, a water trap manifold 14 integral with the head assembly at the upper end of said electrode.

Abstract: A porous graphite electrode for a fuel cell is formed by impregnation of a cellulosic filter paper by coating or impregnating with a low coke yield impregnant on the active center area and with a high coke yield impregnant on the edges, followed by curing, baking, and graphitizing the electrode to form a monolithic porous graphite electrode base with a dense low porosity area at the edges with a less dense higher porosity center working area.

Abstract: The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids small amounts of sulfonated styrene-maleic anhydride copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylamide or their derivatives.

Abstract: The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids a small amount of a sulfonated styrene-itaconic acid copolymer.

Abstract: Particulate materials in aqueous media such as heat exchange systems are dispersed by introducing into the system a polymer blend comprising about 50 to 99% by weight of (A) a water-soluble, dissociating, low molecular weight polymer of at least one alpha, beta-monoethylenically unsaturated carboxylic acid, and about 50 to 1% by weight of (B) a water-soluble, dissociating, lower molecular weight polymer selected from (1) vinyl aromatic polymers and (2) polymers of 2-acrylamido-2-methylpropanesulfonic acid. A typical polymer blend comprises, in neutralized form, (A) polyacrylic acid terminated with thioglycolic acid and (B) a polymer of sulfonated styrene and maleic anhydride.

Abstract: A multiple coating composition is utilized to provide oxidation resistance for carbon or graphite articles during use in high temperature environments. A method for applying the composition is also provided.

Abstract: A non-consumable electrode having a substantially flat working surface suitable for use as an anode in molten salt electrolysis, particularly for the production of aluminum in Hall-Heroult reduction cells, is produced by a process wherein at least the portion of a conductive core that is exposed to the electrolyte bath is coated with a composition of higher resistivity than the core composition to provide uniform current density at all regions of the working surface of the anode.

Abstract: Amino substituted acrylamide monomer is utilized as a coupling agent for reinforcing fibers and polyester base resin matrix in the production of thermosetting resin systems to enhance the bonding characteristics of the resin with the fiber while improving the flexural strength of the final composite structure.

Abstract: A ceramic electrode suitable for use in an electrolytic cell has a conductive ceramic substrate of a base material and at least one additive material having a concentration greater than its solubility limit in the base material, and a coating of the base material on the substrate. The electrode is produced such that the additive material is diffused from the substrate to the coating, but such diffusion is terminated before or upon reaching the solubility limits of the additive material in the coating.

Abstract: A method for maintaining and/or repairing a protective coating on the surfaces of at least one component in a high temperature zone of an engine during operation thereof wherein selected additives are employed in the engine's fuel.

Abstract: A non-consumable cermet electrode for electrolytic proceses comprises at least about 75 vol. % of a hexagonal ferrite component ceramic composition and no more than about 25 vol. % of a metal component.

Abstract: The wall of an oxidizing chamber for the continuous thermal oxidative stabilization of organic fibers which undergo exothermic reaction during treatment thereof possesses high thermal conductance and has an internal surface of high total normal emissivity to absorb heat from the fibers generated by the exothermic oxidation reaction.

Abstract: Aluminum is manufactured in a Hall-Heroult cell employing a non-consumable anode having a substantially flat working surface produced by a process wherein at least the portion of a conductive core that is exposed to the electrolyte bath is coated with a composition of higher resistivity than the core composition to provide uniform current density at all regions of the working surface of the anode.

Abstract: The oxidation resistance of carbon bodies formed from petroleum coke is increased by inhibiting the catalytic effects of vanadium and/or nickel impurities in the coker feedstock through utilization of an effective amount of an inorganic magnesium compound or an organo-magnesium compound present in such feedstock during coking.

Abstract: A composite electrode for an electric arc smelting furnace has a metal liquid cooled upper clamped section, a consumable graphite lower section and a metal liquid cooled connecting pin. The upper section is fitted with rectangle-shaped tiles of graphite (33) over the area of the electrode held in the electrode power clamp during furnace operation.

Abstract: An anode for use in the electrolytic production of magnesium comprises a graphite body having an essentially impermeable coating thereon of magnesium or magnesium-aluminum alloy.