Abstract: In the hydrotreating of pyrolysis gasoline, recycle effluent is treated to separate the more volatile components therefrom, prior to recycle, to thereby increase the hydrogen partial pressure of the hydrotreating. In this manner, total pressures can be reduced to correspond to the pressure of the available hydrogen gas, while retaining the kinetic benefits of increased partial pressures.

Abstract: The invention relates to an ink capable of producing writing or marking on a non-absorbent or impermeable surface, which can easily be wiped off. The disadvantages inherent in the known inks are overcome by adding ester compounds of a certain composition to the ink.

Abstract: High frequency electrical cable is provided in accordance with the teachings of the instant invention wherein a plurality of conductors for transmitting information are contained in a common sheathing. Each of the plurality of conductors takes the form of a central core of insulating material upon which a layer of conductive material is rigidly disposed. The thickness of the layer of conductive material is such that current penetration is substantially independent of frequency within a given frequency range. Therefore, within this frequency range the attenuation characteristics of the resulting cable are substantially independent of frequency.

Abstract: A latex base paint waste water containing dispersed paint solids is clarified by flocculating the paint solids with a cationic flocculant. The separated paint sludge is brought to an alkaline pH and treated with an anionic dispersing agent whereby the sludge can be used in the formulation of a latex base paint.

Abstract: An effluent from a process for producing vinyl chloride includes 1,2-dichloroethane and heavier components, with the 1,2-dichloroethane being recovered, in a heavy ends stripping column by use of ethane and/or ethylene as stripping gas. The stripping gas is ultimately used for production of vinyl chloride.

Abstract: There is disclosed a compound having the following structural formula: ##STR1## WHEREIN X, Y, and Z each being selected from the group consisting of ##STR2## wherein one of R.sub.1 and R.sub.2 is hydrogen and the other is an alkyl group having from 1 to 6 carbon atoms with the alkyl to hydrogen mole ratio being less than 0.4 and X being an integer of at least 1 and R.sub.3 is a diradical selected for the group consisting ofR.sub.3 is a diradical of either:(a) 1 to 6 methylene groups(b) a diradical of: --CH.dbd.CH--(c) a diradical of: ##STR3## where R.sub.1, R.sub.

Abstract: A packed bed gas-liquid contactor wherein the liquid distributor is positioned within and supported by the packed bed, with the portion of the packed bed above the liquid distributor being blocked by an imperforate structure and the remaining portion including non-process packing, whereby gas flows from the process packing through a limited portion of the upper part of the packed bed, defined by the non-process packing to the gas outlet. In this manner, the residence time of the gas in the upper portion of the bed is limited.

Abstract: Solids are separated from a tar sands extract by gravity settling or centrifugation in the presence of a liquid promoter which promotes and enhances the separation of the solid material. The liquid promoter has a characterization factor of at least 9.75, a 5 volume percent distillation temperature of at least 250.degree. F and a 95 volume percent distillation temperature of at least 350.degree. F and no greater than 750.degree. F. As a result, liquid product is obtained without the necessity of preliminary coking of the entire extract.

Abstract: A compression ignition engine has two opposed pistons acting in each cylinder. The pistons are connected to a crankshaft via a rocker beam, and the fulcrum of the rocker beam is at one of its ends so that when the piston is at inner dead center, the little end of the crankshaft/rocker beam connecting rod is at its closest position to the crankshaft axis. The position of the fulcrum is also adjustable, while the pistons are in motion, to alter the engine's compression ratio.

Abstract: Vanadia supported on a silica-alumina or gamma-alumina support in an amount to provide a vanadia to support weight ratio ranging from about 0.3:1 to about 3:1 substantially entirely within the pores of the support, the vanadia having been placed in molten form substantially within the pores of a support having a surface area greater than about 50m.sup.2 gram, a porosity greater than about 0.4 cc/gram which further includes an alkali metal, with the vanadium metal to alkali metal mole ratio being from 2:1 to 30:1. At least a portion of the alkali metal is preferably in the form of alkali metal vanadate. The catalyst is used for the production of nitriles from a compound containing at least one alkyl group.

Abstract: A metal pipeline detector is described in which a generator generates a magnetic field. The magnetic field couples the metal pipeline when the detector is located in the vicinity thereof, and as a result eddy currents are induced in the pipeline. Detector coils are arranged to be coupled by the magnetic field produced by the eddy currents but not by the magnetic field generated by the generator. The detector coils are spaced apart so that the magnitude of the field coupled in each coil is representative of the distance between the pipeline and the coil. Electrical processing circuitry acts to detect the difference between the magnetic field coupled in each coil so as to determine the degree of which the detector is displaced from the optimum path for tracking the pipeline. In addition the processing means acts in response to the outputs of the detector coils to provide an indication of the distance of the pipeline to the detector.

Abstract: Water soluble polymers dispersed in a water-in-oil emulsion are treated to reduce the water content thereof to provide a polymer dispersed in oil which is stable to coagulation or agglomeration during subsequent treatment. The composition can be chemically modified and/or made self dissolving in water by addition of surfactant without polymer agglomeration.

Abstract: In an anchor the stabilization arms transversely extending in the plane of the flukes are constructed as bars of quadrilateral cross-section having forwardly directed faces forming an acute angle with each other instead of rod-shaped. These bars are so formed that with a considerably smaller length of the stabilization arms the same stabilizing effect is obtained.

Abstract: There is disclosed a drive assembly for the rotor of a solvent extractor and comprised of drive sprocket, a guide sprocket and a take-up sprocket on which is coursed an endless chain, which assembly is disposed about a portion of the rotor on which a chain angle including drive clips are peripherally mounted such that the chain contacts a segment of the chain angle about the rotor.

Abstract: Testosterone-15.alpha. or .beta.-carboxyethyl thioether, 5.alpha.-, dihydrotestosterone-15.alpha. or .beta.-carboxyethyl thioether related compounds and intermediates for preparation thereof. The compounds are conjugated to an immunological protein and employed to elicit an antibody highly specific to testosterone and 5.alpha.-dihydrotestosterone respectively. The elicited antibody can be employed for determination of testosterone and 5.alpha.-dihydrotestosterone respectively, in samples, by radioimmunoassay.

Abstract: Process for thermoforming hollow articles having large length to diameter ratios. A male mold assembly having an extendible head portion formed of a porous metal is employed with the male mold being passed through the plane of a heated plastic sheet while a vacuum is drawn through the porous metal head portion to draw the sheet against the male mold. The extendible head portion is extended to increase the depth of the formed article.

Abstract: Digital sootblower control systems and methods therefor are provided in accordance with the teachings of the present invention. In the digital sootblower control systems provided within the present invention, a programmable controller is interconnected to a scanner, a display panel, sootblower drivers, sootblower signal receivers, and information input panels. The information input panels are capable of designating sootblowers within the system, sootblowing program routines to be established and sequences of program routines to be initiated. The programmable controller is provided with an executive program which is determinative of system parameters to be monitored as well as limits upon sootblowing program routines to be established. Once a sootblowing program routine has been initiated by an operator, the programmable controller issues orders to the sootblower drivers to start an initial sequence of sootblowers defined in the inititated sootblowing program routine.

Abstract: There is disclosed a process and apparatus for manufacturing flexible, shielded coaxial cable exhibiting improved magnetical screening capabilities wherein a tubular outer conductor is concentrically formed about an inner conductor with spacer means being disposed in the annulus between conductors. Accordingly, about the inner conductor including spacer means therefore, there is formed an inner component tube of a conductive material by the continuous forming in a lengthwise direction of a metal band into a tube having longitudinal edges welded together in a continuous, longitudinal welded joint. Concurrently, at least one further component tube is formed concentrically about the inner component tube by the lengthwise deformation of a second metal band of a ferromagnetic material into a second tube having opposed longitudinal edges which are also welded in a longitudinal direction in a continuous, longitudinal welded joint.

Abstract: Insoluble material is separated from a coal liquefaction product by gravity settling in the presence of a promoter liquid having specific characteristics, with a portion of the solid containing underflow being recycled to the gravity settler and introduced at a point above the introduction of the coal liquefaction product, with the respective points of introduction being separated by a distance of at least 0.1 H and no greater than 0.5 H wherein H is the total height of the gravity settler.

Abstract: There is disclosed a gating assembly provided with at least two orifices of different diameters and associated with an injection molding assembly. In an initial stage of extruding the plastic material into a mold cavity, the orifice of larger diameter is utilized to provide the fluid communication between the extruder nozzle and mold cavity whereas the orifice of smaller diameter is utilized in the final stages of injection to insure thorough packing of the plastic material in the injection mold.