Abstract: A melting furnace and method for melting metal comprising the injection of inert gas into molten metal at a defined location as a concentrated plume to create localized surface agitation, and high quality refractory surrounding the gas injection means at the furnace bottom.

Abstract: Odors attributable to organic molecular species are eliminated to levels below their olfactory detection level threshold by contact of the odor-producing species with a crystalline siliceous molecular sieve material having at least about 90 percent of its tetrahedral oxide units as SiO.sub.2 tetrahedra, having pore apertures nominally at least 5.5 A in diameter, from which the original water of hydration has been substantially removed, having a capacity for adsorbed water of not greater than 10 weight percent when measured at 25.degree. C. at a water vapor pressure (p/p.sub.o) of 4.6 torr.

Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of ELO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 framework oxide units are disclosed. The molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (EL.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system: "m" represents the molar amount of "R" present per mole of (El.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; "EL" represents at least one element capable of forming a framework oxide unit; and "w", "x", "y" and "z" represent the mole fractions of element(s) "EL", aluminum, phosphorus and silicon, respectively, present as framework oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: A process for reducing sheeting during production of polyolefins by polymerization of alpha-olefins utilizing titanium based polymerization catalysts wherein the static electric charges in the reactor at the site of possible sheet formation are maintained below static voltage levels which would otherwise cause sheet formation.

Abstract: Cracking catalysts and their use in cracking processes are disclosed. The cracking catalysts are prepared using novel non-zeolitic molecular sieves and, optionally, traditional zeolitic aluminosilicate cracking components.

Abstract: Surfaces containing hydroxyl groups are rendered water-repellent through exposure to hydridoaminosilanes of the general formulaH.sub.x Si(NRH).sub.y (NR.sub.2.sup.1).sub.3-yIn particular, tris(dimethylamino)silane and its derivatives have been found to make substrates with hydroxyl-containing surfaces hydrophobic without adversely effecting the physical properties of the substrate being treated and without the necessity of and pre- or post-treatment steps (i.e. moisturizing, neutralizing, etc.).

Abstract: Transition metal-diorganophosphite complex catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-diorganophosphite ligand complex compositions, diorganophosphite ligands and transition metal-diorganophosphite catalysts.

Abstract: Molecular sieve compositions having three-dimensional microporous framework structures of LiO.sub.2, AlO.sub.2 and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Li.sub.x Al.sub.y P.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Li.sub.x Al.sub.y P.sub.z)O.sub.2 ; and "x", "y" and "z" represent the mole fractions of lithium, aluminum and phosphorus, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: Particulate novolac resins and aqueous dispersions are produced by condensing phenol with aldehyde using acid catalysis. Following neutralization, particulate novolac resin is formed by adding protective colloid to the aqueous mixture. Resin particle isolation can be aided by dephenolation.

Abstract: Method of thermal spray coating a substrate by projecting heat-softened particles onto said substrate including the steps of contacting particles to be projected and coated onto the substrate with a body of hot gases, heating the particles in the hot gases to a temperature near, at or above their melting point and impinging the heated particles against the substrate to provide a coating having the desired thickness wherein said particles are first heated to a relatively higher temperature and impinged onto the substrate to provide a first layer having a thickness that is a fraction of the desired thickness and thereafter heating coated particles to a lower temperature in the hot gases and impinging them on the first layer to provide a second layer having a thickness which together with the thickness of the first layer equals the desired thickness. The invention also includes the resulting coated substrates.

Abstract: A membrane system is positioned within an insulated enclosure heated to maintain superheat conditions for the feed gas to the system, wherein individual membrane modules are not insulated. The feed gas compression heat is desirably used to supply the superheat to the feed gas within the insulated enclosure.

Abstract: Wear- and corrosion-resistant ceramic, cermet or metallic patterned embossing surfaces, e.g., as a coating bonded to an embossing roll, containing an average of 50 to 2,000 peaks per inch covering said patterned embossing surface. Also, methods of producing a patterned, wear-resistant embossing surface by bonding a ceramic, cermet or metallic coating to a patterned embossing surface, e.g., of an embossing roll, providing an average of about 50 to about 2,000 peaks on the external surface of said coating covering said embossing surface.

Abstract: Titanium-aluminum-silicon-oxide molecular sieves are disclosed having use as molecular sieves and as catalyst compositions in hydrocarbon conversion and other processes. The molecular sieves have a unit empirical formula on an anhydrous basis ofmR: (Ti.sub.x Al.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic+ emplating agent; "m" represents the moles of "R" present per mole of (Ti.sub.x Al.sub.y Si.sub.z)O.sub.2 ; and "x", "y" and "z" represent the mole fractions of titanium, aluminum and silicon, respectively, present as tetrahedral oxides. The molecular sieve is useful in separating molecular species having different degrees of polarity and/or kinetic diameters.

Abstract: This invention is directed to adducts of a poly(active hydrogen) organic compound and a polyepoxide comprising the reaction product of a poly(active hydrogen) organic compound and a polyepoxide containing two or more epoxy groups per molecule, said poly(active hydrogen) organic compound being employed in an amount at least sufficient to effect substantially complete reaction of the epoxy groups of the polyepoxide. The adducts are useful in the formulation of high solids coating compositions, polyurethane elastomers, inks, sealants, adhesives and the like.

Abstract: Lactone acrylates and organic anhydrides are condensed to form carboxyl-terminated lactone acrylates. These can be homopolymerized or copolymerized with ethylenically unsaturated monomers by means of radiation.

Abstract: In the process for removing organic impurity constituents from aqueous media by adsorbing same on an organophilic molecular sieve adsorbent, followed by regeneration of the adsorbent by contact with an oxidant, such as hydrogen peroxide, whereby the organic adsorbate is converted to innocuous materials, principally CO.sub.2 and H.sub.2 O, the efficiency of the regeneration operation is found to be substantially improved by decreasing the pH of the regenerating medium and/or increasing the number of Bronsted acid sites in the molecular sieve adsorbent.

Abstract: New and improved orthopedic/orthotic splint materials are provided which exhibit excellent elasticity, do not easily fingerprint, retain adhesion and have high toughness and flexural strength. The materials employed in the casts of this invention are blends of an aliphatic polyester, such as poly(epsilon-caprolactone), with certain thermoplastic polyurethanes having a hard block segment and a soft block segment, which possess a combination of desirable properties not heretofore found in cast materials.

Abstract: An aluminum refining vessel has two refining stages positioned side-by-side, with flow of molten aluminum into and out of the vessel being from the same side thereof. The vessel is readily adaptable for the reversal of flow therethrough, and for ease of installation, operation and maintenance.

Abstract: An integrated pressure swing adsorption/membrane separation process is disclosed for the separation and purification of at least one gas component of a feed gas in which the purge effluent from the pressure swing adsorption part of the system is passed through a membrane separation unit to produce a non-permeate which is utilized as a displacement gas in the pressure swing adsorption part of the system. Desirably, the permeate is also utilized as a purge gas or repressurization gas. The apparatus for carrying out the process is also disclosed.

Abstract: An improved process for producing a molded microcellular elastomer with a reduced number of voids from at least two liquid reactants and a gas, which process comprises introducing into at least one reactant a gas to form an admixture; passing the admixture through a static mixer at superatmospheric pressure; then immediately mixing the admixture with the other reactant at superatmospheric pressure to form a reaction mixture; introducing the reaction mixture into a mold in which the pressure is substantially below the superatmospheric pressures used above; and curing the reaction mixture in the mold to produce a molded microcellular elastomer with a reduced number of large voids.