Abstract: At least one decomposable molybdenum dithiocarbamate compound is mixed with a hydrocarbon-containing feed stream. The hydrocarbon-containing feed stream containing such decomposable molybdenum dithiocarbamate compound is then contacted in a hydrofining process with a catalyst composition comprising a support selected from the group consisting of alumina, silica and silica-alumina and a promoter comprising at least one metal selected from Group VIB, Group VIIB and Group VIII of the Periodic Table. The introduction of the decomposable molybdenum dithiocarbamate compound may be commenced when the catalyst is new, partially deactivated or spent with a beneficial result occurring in each case.

Abstract: The temperature of a crude oil provided from a crude oil preheat furnace to a crude tower is substantially minimized by controlling such temperature so as to maintain a desired minimum overflash flow in the crude tower. Also, the temperature of each of the individual coils in the preheat furnace are balanced with respect to each other. Such minimization and balancing results in substantially optimal utilization of the fuel provided to the preheat furnace which results in considerable economic savings with respect to the operation of the preheat furnace.

Abstract: A method is provided by which a silver coating is applied to a polymeric substrate using an aqueous solution of silver nitrate. Also provided is a method for incorporation of silver as silver nitrate into a polymeric composition suitable for molding.

Abstract: Metals contained in a hydrocarbon containing feed stream are removed by contacting the hydrocarbon containing feed stream under suitable demetallization conditions with hydrogen and a catalyst composition comprising zirconium phosphate, cobalt phosphate and iron phosphate. The life and activity of the catalyst composition may be increased by introducing a decomposable metal compound selected from the group consisting of the metals of Group V-B, Group VI-B, Group VII-B and Group VIII of the Periodic Table into the hydrocarbon containing feed stream prior to contacting the hydrocarbon containing feed stream with the catalyst composition.

Abstract: At least one decomposable molybdenum additive selected from the group consisting of a mixture of a molybdenum dithiophosphate and a molybdenum carboxylate and a mixture of a molybdenum dithiocarbamate and a molybdenum carboxylate is mixed with a hydrocarbon-containing feed stream. The hydrocarbon-containing feed stream containing such decomposable molybdenum additive is then contacted in a hydrovisbreaking process with hydrogen under suitable hydrovisbreaking conditions.

Abstract: An apparatus and method for simulating diagenetic models, comprising passing a fluid from a fluid supply vessel sequentially through two rock sample containment vessels, each containing a rock sample. The dual-stage, flow-through apparatus will simulate temperatures, lithostatic and hydrostatic pressures, mineralogy, fluid flow and chemistry of subsurface geologic environments.

Abstract: A mixture of di-(2-hydroxyethyl)disulfide and a derivative of polyoxyalkylene glycol selected from the group consisting of polyoxyalkylene glycol esters and polyoxyalkylene glycol ethers. The mixture is useful in improving the lubricating characteristics of water based fluids in metal working operations.

Abstract: A polyarylene sulfide is prepared in a reaction mixture containing a dihaloaromatic compound, a sulfur source, a polar organic compound and an alkali metal or alkaline earth metal dithionite. The presence of dithionite in the reaction mixture enables the production of polymer and products therefrom having a reduced Tmc and enhanced heat stability.

Abstract: Polymers derived by copolymerizing a hydrophilic vinyl monomer, such as acrylic acid, with at least one hydrophobic vinyl monomer, such as an acrylic acid ester, a methacrylic acid ester, a vinyl ester of a saturated monocarboxylic acid having from 1 to 3 carbon atoms, and the like, prepared in a suitable inert, low chain transfer, organic liquid medium, such as n-hexane, cyclohexane, and chlorofluorocarbons such as 1,1,2-trichloro-1,2,2-trifluoroethane, and neutralized by a suitable base while still slurried in the inert low chain transfer organic liquid medium, perform effectively as water loss additives for drilling fluids under high temperature conditions. Such water loss control additives are especially effective when employed in drilling fluids having high solids content. Also disclosed are drilling fluids employing such water loss control additives as well as a method of drilling a bore hole in the earth using drilling fluids employing such water loss control additives.

Abstract: A process for the production of .epsilon.-caprolactone wherein 4-penten-1-ol is reacted carbon monoxide in the presence of a ligand-stabilized Pd(II) catalyst complexed with a Group IVB metal halide.

Abstract: Mercaptobenzothiazoles are usually employed together with hydrocarbyl trithiocarbonate in flotation processes for the recovery of copper values from an ore containing same.

Abstract: At least one decomposable compound selected from the group consisting of compounds of the metals of Group IIB and Group IIIB of the Periodic Table is mixed with a hydrocarbon-containing feed stream. The hydrocarbon-containing feed stream containing such decomposable compound is then contacted in a hydrofining process with a catalyst composition comprising a support selected from the group consisting of alumina, silica and silica-alumina and a promoter comprising at least one metal selected from Group VIB, Group VIIB and Group VIII of the Periodic Table. The introduction of the decomposable compound may be commenced when the catalyst is new, partially deactivated or spent with a beneficial result occurring in each case.

Abstract: Higher ketones are prepared by contacting, under suitable reaction conditions, a feed stream comprising (a) a primary alcohol of 2-6 carbon atoms per molecule (preferably ethanol, 1-propanol or 1-butanol) and (b) carbon monoxide with a catalyst composition containing copper oxide, zinc oxide and, optionally, alumina.

Abstract: In a process in which a heating fluid supplied from a furnace is utilized to supply heat to a plurality of processes, method and apparatus is provided for substantially optimizing the operation of the heater by minimizing the amount of the heating fluid which is bypassed around the processes to which the heating fluid is supplied.

Abstract: A normal video signal and an overlay video signal are combined by supplying the normal video signal to the base of a first emitter follower transistor while the overlay video signal is supplied to the base of a second emitter follower transistor. The two transistors are biased such that the first transistor is at a slightly lower voltage than the second (overlay) transistor and is reversed biased (off) any time data is available from the overlay video signal.

Abstract: A hydrocarbon containing feed stream, e.g., a heavy oil or residuum, is contacted under suitable reaction conditions with a free hydrogen containing gas and a selenium compound, preferably selenium dioxide, so as to produce a hydrocarbon stream having an increased API.sup.60 gravity. Generally the amounts of impurities (sulfur, coke precursors, metals) contained in the feed stream are reduced in this hydrotreating process.

Abstract: An ethylene polymer composition is provided, the composition being a blend of a first ethylene polymer and a second ethylene polymer, the second ethylene polymer characterized by molecules having long chain Y-branches. The blend can be prepared by an extrusion process in which a portion of the polyethylene fed to the process is irradiated and the irradiated and non-irradiated polymers are blended by melt extrusion. The blends exhibit high flow activation energies and good blow-molding properties.

Abstract: A catalyst composition is prepared by dissolving a suitable vanadium and oxygen containing compound, a suitable nickel (II) compound and ammonia in water, mixing this solution with an alumina containing support material, and calcining this mixture. This catalyst composition is used primarily for hydrotreating of hydrocarbon feed stream, which contain nickel, vanadium and sulfur impurities, particularly heavy oils.

Abstract: Conditioning of a sample of the cracked-gas effluent from a cracking furnace is accomplished by contacting the sample under suitable conditions with a suitable hydrocarbon absorbent in such a manner that the heavier components in the cracked-gas sample are absorbed. The rate at which the sample is contacted with the suitable hydrocarbon absorbent is controlled so as to maintain a desired composition of the conditioned sample.

Abstract: Tri-alkali metal di(carboxyalkyl) dithiocarbamates and triammonium-di(carboxyalkyl) dithiocarbamates which can be characterized by the formula ##STR1## wherein R and R' can be the same or different and are selected from the group consisting of alkylene radicals, preferably alkylene radicals each preferably having from 1 to 12 carbon atoms, and wherein M is selected from the group consisting of alkali metal atoms and ammonium; their use as ore flotation depressants; and a process for making these novel compositions are disclosed.