Abstract: In an electrode designed for use in a filter press membrane cell there is provided a frame of predetermined thickness that on opposing sides has generally planar foraminous electrode surfaces reinforcingly attached thereto, the electrode surfaces each having a predetermined surface area. The ratio of the predetermined surface area to the frame thickness for each electrode can vary in the range of about 12.05.times.10.sup.4 linear units to about 0.08.times.10.sup.4 linear units.

Abstract: Disclosed is a method for removing dissolved oxygen from a liquid (e.g., aqueous) system which comprisesadding to said liquid system an effective amount of an oxygen-scavenging chemical selected from 1,2-dihydro-1,2,4,5-tetrazines of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from lower alkyl groups having 1 to 4 carbon atoms and phenyl.

Abstract: A composition suitable for sanitizing water bodies consists of a mixture in compressed form of trichloroisocyanuric acid and an alkali metal bicarbonate. The mixture has a molar ratio of alkali metal bicarbonate to trichloroisocyanuric acid of from about 3:1 to about 1:1 and a moisture content of less than 0.2 percent by weight of the mixture.The novel compositions, for example in tablet form, rapidly dissolve in water bodies such as swimming pools, spas and hot tubs to provide high concentrations of available chlorine for sanitizing the water. The compositions effervesce during dissolution and are resistant to thermal decomposition.

Abstract: A method and apparatus for electromagnetic continuous or semicontinuous casting of metals and alloys. A variable coolant application system is used to control the rate of heat extraction from the casting to properly position the solidification front at the surface of the casting without otherwise influencing the containment process through modification of the magnetic field.

Abstract: A process and apparatus are disclosed for removing inclusions and inclusion clusters from a molten metal or alloy stream prior to casting. In the process, the molten metal is passed through a flotation box having a primary chamber and a secondary chamber located within the primary chamber. The primary chamber is provided with entry and exit portions, one on each side of the secondary chamber so that the stream of molten metal or alloy is directed to flow into the primary chamber, flowing beneath the secondary chamber and out the exit portion. Inclusions and inclusion clusters float to the surface of the molten metal or alloy in the secondary chamber prior to the exiting of the molten metal or alloy stream from the primary chamber through the exit portion for supply to a casting station.

Abstract: Unreacted diisocyanate is removed from a polyurethane prepolymer reaction product mixture by co-distillation of the unreacted diisocyanate with a compound which is at least partially miscible with the prepolymer and which boils at a temperature greater than the boiling point of the diisocyanate. A highly efficient removal rate is achieved in that the concentration of unreacted diisocyanate remaining in the reaction product mixture is generally less than about 0.1 percent, and in many cases less than about 0.05 percent, based on the weight of the prepolymer.

Abstract: An improved cathode with a conductive metal core and a Raney nickel type catalytic surface predominantly derived from an adherent Beta (NiAl.sub.3) crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion contains nickel, tantalum, and aluminum to give a precursor alloy having the formula (NiTa)Al.sub.3 where the tantalum content of the nickel-tantalum portion is in the range of from about 5 to about 25 weight percent. Also disclosed is a method of producing a low overvoltage cathode which includes the steps of coating a nickel-tantalum core or substrate having from about 5 to about 25 percent by weight of tantalum with molten aluminum and heat treating the coated substrate to form a (NiTa)Al.sub.3 ternary alloy with predominantly a Beta crystal structure on the outer portion. An alkali metal hydroxide is used to leach out aluminum and produce a porous binary Raney Ni-Ta alloy surface.

Abstract: In a filter press membrane electrolytic cell there is provided a reinforced electrode frame channel that is backed by a reinforcing strip which also serves as a gasket restraint when the adjacent electrodes are compressed to form the assembled cell.

Abstract: Disclosed are selected O-(2-trichloromethyl-4-pyrimidinyl)-O,O-dialkyl phosphorothionates and O-(2-trichloromethyl-4-pyrimidinyl)-O,O-dialkyl phosphoronates having the formula: ##STR1## wherein Y is an atom selected from the group consisting of sulfur and oxygen; R is a lower alkyl group having 1 to 4 carbon atoms; R.sup.1 is hydrogen, a lower alkyl group having 1 to 4 carbon atoms, halo or nitro; and R.sup.2 is a lower alkyl group having 1 to 4 carbon atoms or an amino group. These compounds have been found to exhibit insecticidal activity.

Abstract: Chlorine-containing gases which may be formed in containers of solid chloroisocyanurates such as trichloroisocyanuric are adsorbed and decomposed by a gas scavenging agent consisting essentially of an alkaline earth metal sulfate, an alkali metal bicarbonate, and carbon. The gas scavenging agent is preferably contained in a gas permeable package which is enclosed in the container. The scavenging agent adsorbs mositure, adsorbs and decomposes nitrogen trichloride, removes chlorine, and neutralizes hydrogen chloride gases formed. Harmful build-up of noxious gases and the reduction of gas pressures within containers for solid chloroisocyanurates is achieved.

Abstract: A process is described for the production of dibasic magnesium hypochlorite which comprises reacting a magnesium salt with an aqueous slurry of a crystalline hypochlorite salt in a reaction mixture containing a chloride ion source. The aqueous slurry has a solids content of from about 10 to about 90 percent by weight of a hypochlorite salt such as an alkali metal hypochlorite or calcium hypochlorite. The process provides a dibasic magnesium hypochlorite product which is readily separated.Dibasic magnesium hypochlorite, Mg(OCl).sub.2.2Mg(OH).sub.2 is useful in bleaching and sanitizing applications.

Abstract: Disclosed is a process for producing a flowable fungicide formulation comprising the steps of:(a) heating sufficiently a mixture of at least one solid active fungicidal compound with a hydrocarbon solvent and surfactant to form a melt;(b) adding sufficient aqueous solution to said melt to form a water-in-oil emulsion;(c) thoroughly mixing said emulsion in the presence of sufficient thickening agent to form a stable flowable fungicide formulation.

Abstract: An electrolytic membrane transport cell adaptable to experimental use for the purpose of accurately measuring simultaneously cation transport and water transport numbers (mol/Faraday) under operating conditions similar to those used in commercial chlor-alkali membrane cells. The cell comprises a pair of half cells each containing a truncated conical chamber adapted to matingly fit together, when abutted at their apexes, and to form a cell, said cell being adapted to hold a permselective membrane which is sealingly supported between said half cells so as to create separate anode and cathode sections, electrode means, heating means, stirring means and electrolyte inlet means. When used in conjunction with radioactive tracer techniques considerable improvements in the accuracy and ease with which transport phenomena can be studied are possible.

Abstract: An electrolytic cell for the electrolysis of aqueous solutions to produce gaseous products is comprised of a housing, a separator traversing said housing to form an anode compartment and a cathode compartment, an anode in the anode compartment, a cathode in the cathode compartment, means for introducing an electrolyte into and removing said electrolyte from said anode compartment, an outlet for gaseous products in the anode compartment, means for introducing a liquid into and removing a liquid from the cathode compartment, and an outlet for gaseous products in the cathode compartment. The electrolytic cell has at least one of the anode and the cathode comprising a porous electrode having a porosity in the range of from about 30 to about 98 percent, the porous electrode having a first portion in direct contact with the separator and a second portion spaced apart from the separator, the second portion being closer to said outlets for gaseous products than said first portion.

Abstract: A magazine-indexing mechanism for a powder-actuated tool, of the type adopted for use with a disk-shaped cartridge magazine, is actuated by the same trigger displacement as actuates the firing mechanism. A first link, pinned to the receiver, and a second link, pinned to an extension of the trigger, are pinned together, with a magazine engaging hook disposed on the dictal end of the first link. When the trigger is pulled, as to fire the tool, the hook is displaced to engagement with the magazine. When the trigger is released, the engaged hook is displaced, indexing the magazine. Means are also provided to prevent indexing an unfired cartridge through the tool.

Abstract: Disclosed are selected 4-hydroxyphenyl anilino alkoxysilanes of the formula: ##STR1## wherein R is hydrogen or a lower alkyl group having from 1 to 4 carbon atoms and each R' is individually selected from an alkyl group having 3 to 12 carbon atoms with the proviso that at least a majority of said R' radicals are sterically hindered alkyl groups. The compounds are disclosed to be effective antioxidants, especially in functional fluids having shielded polysilicate compounds, silicate esters, or silicone oils as base fluids.

Abstract: A process and apparatus for casting a material into a desired thin strip shape. Molten material is formed into the thin strip shape by an electromagnetic containing and forming process. In a first portion the molten material is shaped into the desired thin strip shape and in a second portion upstream of and communicating with the first portion the molten material is electromagnetically contained in a sump. The sump at a top surface thereof has a substantially larger cross-sectional area as compared to a cross-sectional area of the thin strip shape.

Abstract: In a filter press membrane chloralkali electrolytic cell there is provided an improved external electrolyte recirculation system wherein the salt brine and deionized water replenisher feed lines are inserted individually within the electrolyte return conduits from each external gas-liquid disengager to thereby introduce feed electrolyte into a reservoir of electrolyte fluid which is in low resistance contact with the electrodes.

Abstract: A novel package of available chlorine compound comprised of a stack of a plurality of tablets enclosed in a liquid impervious synthetic material. The package is prepared by placing the stack of tablets in a tube of heat shrinkable synthetic material and then heating to effect shrinkage and to form a tightly adhering tube of synthetic material around the cylindrical exterior of the tablets. The resulting package can be adjusted to size by cutting where desired between tablets. The packages are useful in sanitizing water, particularly swimming pool water by placing them in a strainer basket of a skimmer unit.

Abstract: A power adjustment for a piston-type powder actuated fastener driving tool wherein a tube is slidably disposed in the barrel of the tool, the tube containing the driving piston of the tool. The tube has a radially inwardly extending flange at its breech end which engages a radially outwardly extending surface on the piston. Means for moving the tube axially of the barrel are provided so that the distance between the flange and firing chamber can be varied whereby the gas expansion chamber between the firing chamber and the rear face of the piston can be varied thereby varying the power with which the piston is driven.