Abstract: In an assay wherein radiolabeled substance bound to a receptor is separated from unbound radiolabeled substance, such separation is effected by the use of a combination of a particulate adsorbent and a thickening agent to decrease adsorption time. The procedure can be employed, for example, in separating bound iron from free iron in a total or unsaturated iron binding capacity assay.

Abstract: A skew rolling mill is provided with only two working rollers offset from each other by 180.degree.. Restraining elements are provided between the rollers to prevent lateral bending of the stock being rolled.

Abstract: Isophthalonitrile (IPN) is recovered from an isophthalonitrile production reaction effluent, which contains water vapor, by direct contact quenching of the effluent with an organic quench liquid to cool the effluent to a temperature at which essentially all of the isophthalonitrile is condensed as a solution in the organic quench liquid, without condensation of water vapor. In this manner, isophthalonitrile is recovered from the effluent and separated from water vapor, thereby preventing the liquid phase hydrolysis of IPN which occurred in prior art procedures.

Abstract: Ethanol is dehydrated to ethylene at dehydration reaction conditions in the presence of a dehydration catalyst, with the reaction being effected in a fluidized bed of the dehydration catalyst. The use of a fluidized bed has been found to improve overall yields, with it being possible to achieve yields of 99+%.

Abstract: Copper-clad steel wire is produced by forming a copper tube around the wire, and drawing down the copper tube and wire to reduce the cross-section of the wire by at least 30%. The wire is annealed, slowly cooled and the cross-section further reduced by at least 10%.

Abstract: Solids are separated from a liquid in a gravity settler provided with inclined solid intercepting surfaces to intercept the solid settling path to coalesce the solids and increase the settling rate. The intercepting surfaces are inverted V-shaped plates, each formed from first and second downwardly inclined upwardly curved intersecting conical sections having their apices at the vessel wall.

Abstract: There is disclosed a composition of matter which is used for treating a vinyl-coated foam substrate, such as a gym mat or the like to recondition such substrate, and which is comprised of a vinyl copolymer and a plasticizer in a solvent system including a ketone and a chlorinated hydrocarbon.

Abstract: There is disclosed a novel apparatus for thermoforming a plastic article wherein the male mold assembly and the female mold assembly are disposed on support members which are maintained in fixed relationship to each other during thermoforming operation. The sheet of thermoforming material after initial heating is trapped by clamping devices associated with the assemblies with the male die and female die molds associated with the male and female mold assemblies, respectively, being operated by fluid cylinder assemblies motivated by pressurized fluid.

Abstract: Process for recovering hydrogen chloride from an aqueous hydrogen chloride off-gas from an oxychlorination reaction wherein hydrogen chloride is separated from the off-gas as an aqueous solution of hydrogen chloride and employed as feed to an oxychlorination reaction. The process is particularly applicable to the production of vinyl chloride.

Abstract: There is disclosed a primer composition which is coated on the polyolefinic-containing foam prior to application of the vinyl film and is comprised of a chlorinated hydrocarbon solvent in which there are added a material selected from the group consisting of a chlorinated paraffin, an acrylic type ester, and a vinyl copolymer.

Abstract: A rheological control agent comprises a particulate blend of hydrogenated castor oil and an oligomeric polyamide derived from hydroxystearic acid, one or more saturated aliphatic .alpha. - omega diprimary diamines containing 2, 4, 6, 8 or 10 carbon atoms and one or more saturated aliphatic .alpha.-omega dicarboxylic acids containing from 2 to 10 carbon atoms and/or hydrogenated dimer acids. The oligomeric amide is suitably derived from the reaction of the hydroxystearic acid, dicarboxylic acid and diamine in such proportions that for each mole of hydroxystearic acid there is present 0.05 - 0.5 moles of dicarboxylic acid and a quantity of diamine sufficient to provide from 0.8 to 1.15 amine groups for each carboxyl group in the acid mixture.

Abstract: In an integrated process for electrolytic production of chlorine and the production of an olefin oxide via the chlorohydrin wherein the chlorohydrin is contacted with an aqueous solution of sodium hydroxide and sodium chloride from the cathode compartment of an electrolytic cell, to produce the oxide and brine, the brine is contacted with gaseous chlorine to oxidize organic impurities to volatile organic fragments, which are stripped from the brine, prior to recycling the brine to the electrolytic cell.

Abstract: The invention relates to a separable or foldable ski. The ski has separate sections pivotally joined together. Located at the joint is a coupling arrangement by means of which the corresponding section may be joined together. In addition, a stabilizing device is provided to join and stiffen the ski in the extended position in order to provide desirable rigidity and resiliency therein.

Abstract: There is proposed a seat of adjustable height having a seat part coupled by a connecting element to a supporting lever acted upon by supporting spring means, the lever being swingable against the action of the supporting spring means by a load acting on the seat part. In order to enable easy height adjustment with a simple construction in such a seat the connecting element is adjustable relative to the supporting lever to change the height of the seat part and a locking device is provided by means of which the connecting element and the supporting lever can be locked in several different relative positions. To enable height adjustment without use of a special lever the locking device may be constructed to lock the connecting element and the supporting lever in a series of relative positions as the seat part is raised and when the seat part reaches an upper end position to set itself in a disengaged condition which is maintained until the seat part is lowered to a lower end position.

Abstract: There is disclosed an improved rotary extractor assembly comprised of a rotor positioned within a vapor tight vessel and having upper and lower wheel assemblies positioned along the periphery thereof, which wheel assemblies ride on upper and lower track assemblies mounted to the inner surface of the vessel.

Abstract: Process and apparatus for treating a comminuted solid carbonizable material, such as comminuted municipal waste; sawdust, granulated coal, shredded tires and the like wherein the material is caused to be pyrolyzed in a horizontally disposed elongated reaction zone essentially free of any oxygen containing gases at ambient pressure and at a temperature of from 400.degree. C. to 900.degree. C. The material is passed through the reaction zone by paddle-like impellers mounted on a shaft while being subject to an indirect heat transfer relationship via a burning air fuel mixture spirally swirling within a heating zone about the reaction zone and the mixture being withdrawn from a lower portion of the heating zone. During pyrolysis, the material is chemically changed into valuable gaseous, liquid and solid products.

Abstract: Solid substrate is coated with a receptor, with a limited portion of the receptor being reversibly coated with a labeled form of a ligand to be assayed, whereby during an assay procedure the labeled form of the ligand is free to re-equilibrate with the receptor in competition with the ligand to be assayed.

Abstract: Monoradioiodinated derivatives of compounds employed in a radioassay prepared from precursors which are either active esters, amino acids, or amines, including a phenolic or imidazole substituent group in which one of the possible two sites on the group for radioiodination is substituted to permit production of a monoradioiodinated derivative. A preferred precursor is an active ester of 3-fluoro-5-radioidotyrosine which can be coupled to a compound including an amino group to produce a monoradioiodinated derivative of the compound.

Abstract: Hydrogen chloride and oxygen are contacted with a molten mixture of cuprous and cupric chloride in a oxidation reaction zone to enrich the cupric chloride content of the melt, and the melt introduced into a dechlorination zone wherein gaseous chlorine is removed from the melt. The oxidation reactor is operated at a pressure higher than the dechlorination reactor, and molten salt circulation rates are controlled in a manner such that the cupric chloride content and temperature of the salt introduced into the dechlorination reaction zone are higher than the cupric chloride concentration and temperature of the melt introduced into the oxidation reactor.

Abstract: Terephthalonitrile is separated from p-xylene containing solution by fractional distillation in the presence of p-tolunitrile, with the p-tolunitrile being present in the fractional distillation tower in an amount sufficient to solubilize the terephthalonitrile in all portions of the column at which the temperature in the column is below the melting point of tetephthalontrile, whereby terephthalonitrile can be recovered as a liquid. The solution generally includes p-xylene, benzonitrile, p-tolunitrile and terephthalonitrile and is separated from a terephthalonitrile production reaction effluent by direct contact quenching with an organic liquid containing p-tolunitrile.