Abstract: An improved hermetically sealed semiconductor casing and a process for producing the casing are disclosed. This casing includes a lead frame having an electrical device affixed thereto. A base member is glass bonded to a matching surface of the lead frame. A metal window frame shaped device is provided having one surface with a refractory oxide coating and a second opposite readily solderable surface. The refractory oxide layer of the window frame device is glass bonded to the lead frame and the base member. The semiconductor or electrical device is connected to the lead frame after the window frame has been glass bonded into place. A metal lid having a solderable surface is solder bonded to the solderable surface of the window frame to hermetically seal the electrical device within the casing.

Abstract: A process for producing an alkylene oxide or mixture of alkylene oxides by a reaction which comprises reacting an alkane, an alkylene, or mixture thereof with an oxygen-containing gas in the presence of at least one molten nitrate salt.

Abstract: A process for treating the surfaces of a polymeric separator mesh for use in an electrochemical cell between an anode and a membrane to obtain a hydrophilic coating.

Abstract: A process for preparing doped barium and strontium hexaferrite compounds having the formula (I):Afe.sub.12-r-s M.sub.r N.sub.s O.sub.19 (I)wherein A is barium or strontium; M is cobalt, zinc, nickel; N is titanium or ruthenium and r and s are individually in the range from about 0.1 to about 1.2, said process comprising:(a) forming particles of a doped Fe.sub.3 O.sub.4 /ACO.sub.3 co-precipitate wherein A is defined above from (i) a ferric compound, (ii) a ferrous compound, (iii) a barium or strontium compound, (iv) a cobalt, zinc or nickel compound, (v) a titanium or ruthenium compound and (vi) alkali metal carbonate;(b) suspending the doped Fe.sub.3 O.sub.4 /ACO.sub.3 particles in a concentrated aqueous solution of an alkali halide;(c) spray drying said suspension to form a dried powder comprising said doped Fe.sub.3 O.sub.4 /ACO.sub.3 particles distributed onto the surfaces of the high temperature-melting alkali halide crystals;(d) calcining said dried powder at a temperature from about 700.degree. C.

Abstract: A process and apparatus for producing increased reductions in strip material, particularly soft metal strip materials, are disclosed. The process and apparatus utilize a rolling mill having at least two offset work rolls driven at a peripheral speed ratio less than a desired gage reduction ratio but greater than zero and a mechanism for applying forward tension to the strip material. The desired gage reduction may be obtained using reduced separating force magnitudes and minimized tension force magnitudes. The rolling mill utilizes relatively small diameter work rolls without having to provide additional support structures other than the back-up rolls and frame roll supports to prevent roll bending in the rolling direction. Roll flattening is substantially eliminated resulting in improved gage control and strip flatness.

Abstract: A bleaching composition for color photographic materials consists essentially of an aqueous solution containing a complex of ferric ion and an aminopolycarboxylic acid or salt thereof; a mercapto-substituted 5-membered heterocyclic nitrogen compound having at least two nitrogen atoms; and a vinyl pyrrolidone polymer selected from the group consisting of poly-N-vinyl pyrrolidone and an alkyl-substituted poly-N-vinyl pyrrolidone.Use of the novel bleaching composition in the bleaching process for color photographic materials results in a substantial reduction in bleaching time while preventing the formation of a precipitate during the process. Further, use of the bleaching composition and process permits a significant reduction in the amounts of bleaching agent and other components of the bleaching solution required where the bleaching time is not critical which results in a substantial cost reduction.

Abstract: Doped co-precipitates of magnetite (Fe.sub.3 O.sub.4) and ACO.sub.3, wherein A is barium, are prepared by a simplified process. This process involves reacting together, in an aqueous medium containing dopant ions, a ferric compound, a ferrous compound, a barium compound and an alkali metal carbonate.

Abstract: A sanitizing composition consisting essentially of a mixture of a calcium hypochlorite compound and a peroxydisulfate compound having the formula: M.sub.x S.sub.2 O.sub.8 where M is an alkali metal or alkaline earth metal, and x is 1 or 2 is employed in treating water to improve pH control and provide increased removal of organic materials.The compositions provide improved sanitation of water in swimming pools, spas, and cooling towers by efficiently oxidizing organic impurities while helping to minimize the increase in the pH of the water. This permits a reduction in the amount and frequency of addition of acidic compounds such as hydrochloric acid to the water bodies. Further, the incorporation of additives such as algaecides, dispersants, and clarifying agents provides for significant improvements in water quality as evidenced by sparkling pure water.

Abstract: The present direct invention is directed to a sealing glass composite comprising a low melting point sealing glass matrix mixed with a particulate additive to increase the effective coefficient of thermal expansion of the resulting sealing glass composite. The sealing glass matrix is in the lead borate family and the particulate additive is preferably calcium fluoride. The glass composite is particularly useful as a semiconductor package sealant.

Abstract: A process for the production of cellular products which comprises incorporating a blowing agent into rubber or a thermoplastic material uses as the blowing agent a tetrazole compound represented by the formula: ##STR1## in which R represents an alkyl, cycloalkyl, hydroxyalkyl, polyhydroxyalkyl, aryl, alkylaryl, aralkylene, alkenyl, alkenylaryl or alkenylaralkylene group.The novel blowing agents of the present invention include compounds which are liquids which may be directly incorporated into the molten rubber or thermoplastic material. The blowing agents of this invention are especially useful, as indicated, with polymers and copolymers that have high processing temperatures as they minimize polymer degradation and provide products with increased impact strengths.

Abstract: An improved composite wad structure has a unique laminated shot pocket portion. The wad structure is useful in a shotshell with hard shot pellets, such as steel or tungsten shot, having a hardness generally at least equal to that of the barrel of a gun in which the shotshell is to be fired. The laminated shot pocket portion includes a thin-walled, cup-shaped inner liner for supporting a column of the hard shot and thick-walled, cup-shaped outer tubular body encompassing the inner liner. The inner liner is formed of a tough, high tensile strength material capable of withstanding compressive forces generated by acceleration of the hard shot, when the shotshell containing the wad structure is fired in the barrel of the gun, so as to protect the gun barrel from being scored by the hard shot. The outer body is formed of a soft, low tensile strength material capable of expanding to obturate the combustion gases produced in the gun barrel when the shotshell is fired.

Abstract: An apparatus and process for continuous horizontal casting of an ingot from molten metal. The apparatus comprises a mold for effecting rapid solidification of the molten metal into the ingot. A feed nozzle supplies the molten metal to the mold. Transition structure is disposed between the mold and the feed nozzle for solidifying the molten metal in the transition structure to prevent freeze back in the feed nozzle.

Abstract: The present invention relates to a technique for forming silicon carbide coated porous filters for use in filtering molten metal, especially copper and copper alloy melts. The technique comprises preparing a silicon carbide containing slurry having a viscosity in the range of about 1 to about 50, preferably from about 5 to about 30, centipoise and impregnating a rigid porous substrate material with the slurry. In a preferred embodiment, the slurry contains mono-aluminum phosphate as a binding agent, ethylene glycol as a wetting agent, powdered silicon carbide having a maximum settling rate of about 0.1 mm./min. and the balance essentially water. After draining of the excess slurry, the coating substrate material is heated to substantially prevent foaming of the coating during firing and fired to bond the silicon carbide coating to the substrate material.

Abstract: A method of joining metallic layers of foil is disclosed. The layers of foil are spaced apart from each other a desired distance. A metallic component disposed between the layers of foil is in selective contact with each of them. The metallic component is selected to be in the semi-solid condition at a desired processing temperature. The assembly is heated to the processing temperature. The the assembly is cooled so that the metallic component is bonded to the metallic layers of foil.

Abstract: A separator for use in an electrolytic cell between the anode and a cation exchange membrane is provided to prevent the membrane from touching the anode, the separator having a central mesh portion that is hydrophilic and a surrounding peripheral frame portion.

Abstract: The present invention is directed to a process of forming a package for enclosing an electrical device wherein the enclosure contains a very low amount of oxygen and water vapor. The package includes a base and lid components bonded together by a sealing glass. The lid component contains a gettering alloy from which the oxide layer is removed prior to the final sealing of the package. The gettering alloy forms a refractory oxide layer under an oxide layer formed with the primary constituent of the alloy.

Abstract: The present invention relates to a process for forming improved bonds between components of electrical or electronic devices. The process of the present invention preferably comprises annealing a metallic substrate to form a substantially uniform, substantially continuous oxide layer on a surface of the substrate, exposing the oxidized substrate to a reducing atmosphere so as to form an irregular surface on the substrate, and bonding another component to the irregular surface.

Abstract: The present invention relates to a composite liner for a shaped charge device. The liner comprises a wrought metal or metal alloy substrate having a desired shape and configuration and a coating deposited on a surface of the wrought substrate. The coating comprises a substantially uniform, substantially homogeneous isotropic material having a relatively fine grain structure and a relatively smooth surface which facilitates forming a metal jet having improved performance and penetration.

Abstract: Urethane and oxazolidone-containing isocyanurate foams characterized by cracking resistance and scorching resistance and thermal stability at a temperature of about 160.degree. C. or higher. These foams are produced by reacting at least one polyisocyanate with at least one polyepoxide and at least one polyol in the presence of catalyst, surfactant, and blowing agent.