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-maleimide copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylate or their derivatives.

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: Apparatus for the dispersed gas flotation and separation of insoluble, dispersed contaminants from a liquid comprised of a horizontal series of flotation cells, separated by baffles that permit the substantially horizontal flow of liquid from one cell to the next, each cell being equipped with one or more gas dispersing nozzles and screens which aid in the coalescence and flotation of the contaminant particles, and an inclined baffle above the horizontal series of cells to urge the floated impurities toward a weir positioned to remove the impurities from the surface of the liquid.

Abstract: Blends of formaldehyde-based aminoplast resins and water-soluble amines are employed in the purifications of aqueous liquids which contain suspended matter.

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 corrosive effects of liquid nitrogen-based fertilizer compositions on metal surfaces is reduced by adding to the fertilizer compositions small amounts of amine oxides.

Abstract: The corrosion of metals in closed, aqueous cooling systems having a pH of 7.5 to 10.5 is inhibited by adding to the system a coolant concentrate comprising water, at least 10% by weight of a water soluble nitrite or a mixture of a water soluble nitrite and a water soluble nitrate, 0.2 to 2.0% by weight of at least one water soluble azole, and 0.1 to 1.0% by weight of a water soluble molybdate, to provide in the system concentrations of at least 200 ppm of the nitrite or nitrite/nitrate mixture, 2 to 20 ppm of the azole and 1 to 10 ppm of the molybdate.

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

Abstract: Thin carbon products are produced from cellulose material by impregnation with a carbonaceous material followed by curing and baking. The baked product may optionally be graphitized depending on end use.

Abstract: Hydrocarbon oils containing, as a pour point depressant, a terpolymer of a vinyl ester having a total of 4 to 8 carbon atoms, vinyl alcohol and ethylene, the copolymer having a weight average molecular weight of about 1,000 to 100,000.