Abstract: Lubricating oil compositions having improved corrosion inhibition are disclosed. The lubricating oil compositions comprise (a) a major amount of a base lubricating oil, (b) alkenyl succinimide dispersant, and (c) corrosion inhibiting amount of certain specific acidic derivatives of benzene (e.g. 2-amino-5-methylbenzoic acid). In one aspect the lubricating oil composition contains additionally a minor amount of an overbased sulfonate.

Abstract: A sidestream of injection liquid taken downstream of a filter is passed through a monitoring filter of appropriate pore size. Pressure drop over the monitoring filter is determined and a regeneration cycle for the main filter is triggered in response to differential pressure (.DELTA.P) over a preset value, which corresponds to deterioration in filtrate quality.

Abstract: An improved method of drying particulate matter, subject to agglomeration, by fluidized bed drying is disclosed. The improvement of the method comprises adding an effective amount of a fluidizing agent to the particulate matter prior to drying.

Abstract: A process for preparing o-benzylphenol in high selectivity is disclosed. The process comprises heating a mixture of benzyl alcohol and phenol in the presence of an effective amount of activated alumina as a catalyst.

Abstract: Sand control in an incompetent formation is effected by squeezing a thickened composition [comprising a hydrocarbon oil carrier, particulate matter (e.g. sand) a base-settable thermosetting resin, a neutralizing agent (e.g. lauryl amine), a miscible polar solvent (e.g. ethanol), and a carboxy vinyl polymer (e.g. CARBOPOL 934)] in contact with the incompetent formation and curing with a basic catalyst.

Abstract: Early detection of cracks in nonpermeable, structural members subject to stress is effected before the cracks traverse the member by forming a plurality of cavities in the member or adjacent thereto in which a plurality of fluids at differing pressures are confined and monitored, such that a crack in the structural member penetrating between at least two cavities allows passage of fluid between the cavities and is thus detected by a pressure sensor. The apparatus and process is particularly applicable to early detection with vacuum of cracks in the heat affected zone adjacent to welds on critical stressed members of an offshore platform. A strain gauge system may be employed in conjunction with the crack detection system.

Abstract: A process for preparing ortho-substituted cinnamyl phenols is disclosed. The process comprises heating a mixture of cinnamyl alcohol and phenol in the presence of an effective amount of activated alumina.

Abstract: A method for preventing polymer buildup in the polymerization reactor during the suspension polymerization of vinyl chloride monomer to form polyvinyl chloride polymer and copolymers, the method comprising coating reactor surfaces in contact with the reaction medium with a material selected from the group consisting of alumina, dithiooxamide, and mixtures of these prior to carrying out this polymerization.

Abstract: A liquid level sensor for determining the fluid level in a container and for controlling a fluid inlet to the container in response to the fluid level therein. The sensor includes a buoyant liquid-filled flexible conduit or liquid-filled hinged pipe member in the container and a pressure transducer responsive to the head pressure of the liquid in the flexible conduit or hinged pipe member.

Abstract: A method of preparing methyl-substituted phenols is disclosed. The method comprises heating a mixture of mono- or di-hydrocarbyl-substituted cresols and methanol at an elevated temperature in the presence of a catalytic amount of magnesium oxide.

Abstract: Delayed petroleum coke is produced by conventional processing, including steaming of the coke in the drum to remove volatile material. After the steaming operation, the coke is quenched by injecting water onto the top of the steamed coke and passing the quench water downwardly through the coke, whereby the coke bed acts as a filter to trap fines which would pass overhead when the normal method of quenching by injecting quench water upwardly is used. Apparatus including retractable spray nozzles extending into the coke drum from the top is described.

Abstract: Data useful to evaluate the effectiveness of or to design an enhanced recovery process (the recovery process involving mobilizing and moving hydrocarbons through a hydrocarbon-bearing subterranean formation from an injection well to a production well by injecting a mobilizing fluid into the injection well) are obtained by a process which comprises sequentially: determining hydrocarbon saturation in the formation in a volume in the formation near a well bore penetrating the formation, injecting sufficient of the mobilizing fluid to mobilize and move hydrocarbons from a volume in the formation near the well bore penetrating the formation, and determining by the single well tracer method a hydrocarbon saturation profile in a volume from which hydrocarbons are moved. The single well tracer method employed is disclosed by U.S. Pat. No. 3,623,842. The process is useful to evaluate surfactant floods, water floods, polymer floods, CO.sub.

Abstract: Alkyl alcohols are separated from alkyldimethylamines using an immiscible solvent mixture comprising a polar solvent (e.g. dimethylformamide) and a nonpolar solvent (e.g. hexane). The process is particularly useful for C.sub.12-14 alcohols and C.sub.12-14 alkyldimethylamines.

Abstract: A method for improving carbon bed loadings by diluting the vapor feed in order to produce optimum VCM concentrations for the adiabatic adsorption of VCM on dry activated carbon beds. The optimum concentrations are determined for each concentration and temperature of vapor gas.

Abstract: Flexible polyvinyl chloride insulation for wire is made conductive at elevated temperatures activating a sensing conductor and eliminating thermostatic controls. Conduction through the insulation is imparted by adding compounds such as nonylphenoxy (ethyleneoxy) ethanol, certain metallic salts of alcohol sulfates, mixed ortho, parasulfonamides, and liquid crystal compounds.

Abstract: A method for rotating hose movably supported by a plurality of carts in a mine, comprising attaching a means to the roof of the mine for lifting the hose, lifting the hose using reversible hoist means, the hose resting on a support means passing under said hose, said support means having incorporated therein means for rotating the hose before replacing on the cart.

Abstract: An improved method of preparing an aldehyde by passing alcohol and air through a reactor containing a silver catalyst is disclosed. Briefly, the improvment comprises passing the alcohol and air through a zone, packed with silver catalyst, maintained at subreaction temperature prior to passing the reactants through the reaction zone. In a preferred embodiment, the reactants, after leaving the reaction zone, are passed through a zone containing inert material and maintained at a subreaction temperature.

Abstract: A control system for providing precise speed control for a rotary air modulator, and particularly for providing synchronized speed control as between two or more rotary air modulators. A common reference frequency is used for controlling rotational speed of one or more rotary air modulators wherein each modulator deploys an individual feedback system responsive to the reference frequency input to provide precise rotational speed and angular position coordination and, therefore, synchronism of frequency and phase output as between two or more individual modulators. The individual feedback systems include feedback and summation circuitry which derives angular velocity correction, angular position correction and hydraulic pressure drive variation for thereafter correcting and maintaining precise speed control of the rotary drive system.

Abstract: Liquefaction of coal is effected by extraction of coal by a distillable solvent in the presence of hydrogen under conditions selected to produce a coal liquefaction product, the major portion of which is distillable. The effluent slurry product is vacuum distilled to recover the distillables including the solvent. The bottoms fraction is subjected to solvent treatment or fractionation to selectively recover the lower molecular weight portion, which portion is hydrogenated to yield distillate fuels. The remainder of the bottoms fraction is used as feed to a gasifier to make a hydrogen-rich gas or a methane-rich gas as desired.

Abstract: An insertion-type hydrogen probe with a defined active length is described. The probe is formed of a thin-walled, hydrogen-permeable material, and a hydrogen-impermeable liner inside the probe blocks out all but the defined active section of the probe. The interior of the probe is subjected to high vacuum, and the hydrogen permeation through the active portion of the probe is determined, for example, by the current output of an ion pump used with the probe. To prevent bimetallic cell interface effects, the probe is constructed so that only a single metal is exposed to the primary environment being studied.