Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from extruding alkali metal carbonate and a liquid. Optionally, the extruded catalyst support further comprises a carbonaceous compound. Catalyst systems comprise at least one elemental alkali metal deposited on the extruded catalyst support. Optionally, the catalyst system further comprises of at least one promoter. A hydrided catalyst system is prepared by contacting the catalyst system with hydrogen to reduce the dimerization induction period.

Abstract: Water-soluble polymers comprising an N-vinyl amide such as an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods. The invention also broadly encompasses utilizing a water-soluble polymer comprising at least one of a hydrophilic vinyl-containing sulfonate, phosphonate or ester and/or a hydrophilic N-vinyl lactam for applications under hostile conditions.

Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from alkali metal bicarbonate, a liquid, and optionally alkali metal carbonate. Optionally, the catalyst support further comprises a carbonaceous compound. Catalyst systems comprise at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises of at least one promoter.

Abstract: A composition which forms a corrosion-inhibiting film when applied to a metal surface. The composition comprises a low molecular weight polyfunctional polymer formed by polymerizing a vinyl monomer in the presence of a mercaptan chain transfer agent. In one embodiment, the composition comprises a low molecular weight polyfunctional polymer represented by the general formula: ##STR1## wherein M is a repeating vinyl monomer unit, n is from about 2 to about 40, x is from 0 to about 10, y is from 0 to 1, z is from 0 to 1 if y is 0 and 0 if y is 1 and R is hydrogen, an alkyl group, a hydroxy alkyl group or an alkoxy group. A method of treating a metal surface by contacting the metal surface with a composition that forms a corrosion-inhibiting film thereon is also provided. The composition and methods are useful for inhibiting corrosion of downhole metal surfaces present in oil and gas wells.

Abstract: A reinforced plastic which comprises a continuous long fiber reinforcing material in an arylene sulfide sulfone copolymer matrix consisting essentially of two structurally different arylene sulfide sulfone units within the polymer backbone.

Abstract: A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises an epoxy resin, an effective amount of a curing agent for the epoxy resin, an alcohol, and a hydrocarbon diluent. The composition is applied by contacting the metal surface with the composition as one solution or as a hydrocarbon solution of the epoxy resin and a solution comprising the alcohol and the curing agent. The composition is particularly useful in the treatment of down-well metal surfaces in oil and gas wells to inhibit the corrosion of the metal.

Abstract: A process as disclosed for improving the particle size of a olefin polymerization catalyst. The process involves combining the catalyst with an alkoxide-containing liquid comprising a transition metal alkoxide and an aluminum alkyl, causing said alkoxide and said aluminum alkyl to react for form a precipitate and then recovering the resulting solid. Also disclosed are the catalysts produced by such a process and the use of such catalysts in the polymerization of olefins.

Abstract: A composition is provided which consists essentially of a blend of poly(arylene sulfide) polymers, fibrous reinforcement, a hydrotalcite, a nucleating agent, an organosilane, a mold release agent and optionally a pigment. The invention composition is particularly useful for injection molding applications.

Abstract: A method for removing particulate solids, such as catalyst fines, from a hot slurry oil having a gravity of 5.degree. API to 15.degree. API, an atmospheric pressure initial boiling point of from about 500.degree. F. to about 750.degree. F. and an atmospheric pressure end point of less than 1,000.degree. F. which entails mixing a preselected amount of the slurry oil with a preselected amount of a hot vacuum reduced crude oil having equilibrium flash vaporization characteristics such that when the mixture is subjected to a selected temperature in a vacuum tower maintained at a vacuum of from about 1.0 mm Hg to about 10.0 mm Hg, at least 85 volume percent of the slurry oil will be flashed overhead and not more than about 15% of the vacuum reduced crude oil will be flashed overhead, and the particulate solids will remain in the liquid bottoms.

Abstract: A cutter for tapping a plastic pipe, which is capable of retaining a cut coupon, comprises a generally cylindrical element that terminates at one end in a smooth, thin walled circular cutting edge. The cutting edge surrounds a hollow coupon receiving section of the cutter which contains internal threads for engaging the cut coupon so that the coupon is retained within the hollow section of the cutter after completion of the tapping operation. The cutter is used in conjunction with a tapping tee having an internally threaded through-bore for receiving external threads that are provided on a portion of the cutter. The cutter is rotatably advanced through the bore of the tapping tee so as to contact and then cut through the plastic pipe to be tapped.

Abstract: A method of preparing a novel absorption composition comprising zinc oxide, silica and a fluorine-containing acid by mixing a fluorine-containing acid with zinc oxide and silica followed by an agglomeration step. The novel composition, which can be prepared by the novel method, is utilized by contacting a fluid stream with the novel composition to remove sulfur from the fluid stream. A further embodiment of the method of preparation involves utilizing a technique for spraying a fluorine-containing acid upon a zinc oxide and silica mixture while mixing the mixture by an inclined rotating disk agglomerator.

Abstract: Improved methods of correcting the vertical permeability contrast of a subterranean formation to improve the sweep efficiency of waterflooding operations carried out therein wherein the subterranean formation contains at least one high permeability zone lying adjacent and in fluid communication with at least one low permeability zone are provided. In accordance with the methods, a near well bore portion of the high permeability zone is plugged and a crosslinked gel is formed at least at the boundary between the low permeability zone and the high permeability zone whereby fluid communication between the zones is reduced.

Abstract: This invention provides a method for producing high temperature aromatic sulfide polymers which are well suited for use as base compounds in conductive applications. In the method of the present invention, sulfur and a bridged diaromatic reactant compound are reacted in an inert polyhaloaromatic solvent and in the presence of a strong Friedel-Crafts metallic halide catalyst. One novel polymer produced by the method of the present invention is poly(phenoxathiinyl sulfide).

Abstract: A method for the oxidative conversion of methane, at a high conversion and high selectivity to ethylene and ethane, in which a methane-containing gas, such as a natural gas, and an oxygen-containing gas are contacted with a contact material comprising lithium, in an effective amount, preferably 0.1 to 50 wt. % (expressed as the metal), and magnesium oxide, as by passing a mixture of the methane-containing gas and the oxygen-containing gas through a body of the contact material.

Abstract: Olefin polymerization catalysts, processes for preparing the catalysts and processes for producing polyolefins utilizing the catalysts are provided. The catalysts are basically comprised of a pentadienyl derivative-transition metal complex adsorbed on an activated inorganic refractory compound.

Abstract: A phenylene sulfide/sulfone polymer with relatively good melt stability and a method of producing such a polymer are provided. A previously produced phenylene sulfide/sulfone polymer is redissolved in N-methyl-2-pyrrolidone to form a solution. This solution is combined with an alcohol to precipitate highly melt stable phenylene sulfide/sulfone polymer in a particulate form. The alcohol has one to four carbon atoms, such as methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, and the like and mixtures thereof.

Abstract: The present invention provides crosslinked ampholytic copolymers that are highly absorbent to aqueous electrolyte solutions.

Abstract: Sodium-free olefin polymerization catalysts having high polymerization activities and methods of preparing such catalysts are provided. A hydrolyzable silicate ester and a hydrolyzable acid-generating chromium compound are combined with water and an organic solvent whereby a hydrolysis reaction solution is formed comprising silica and chromium. Sufficient acid-neutralizing gelling agent is added to the solution to form a gelled silica-chromium catalyst and the catalyst is aged to stabilize its structure. Water and solvent are removed from the catalyst and the catalyst is activated.

Abstract: A wire guided float level measurement system includes a float, a nozzle and an ultrasonic level detector which are attachable to an open frame. The float, which is supportable on a froth, is slideably attached to te frame via one or more guide wires, and the nozzle and ultrasonic level detector are fixed near the top of the frame. In operation the frame, with attachments, is disposed in a flotation cell in an upright position so as to traverse a froth layer which is formed in the cell. The float, while supported by the froth so as to follow the froth level, serves as a target for pulses transmitted from the ultrasonic level detector, and the detector continually measures the distance to the float which is an indirect indication of froth level. Any mineral accumulation on the float, which would interfere with its buoyancy, is washed off the top of the float by spraying wash water through one or more nozzles.

Abstract: A method for improving the activity of a dehydrogenation and dehydrocyclization catalyst composition and a process for improving the conversion and selectivity of paraffin hydrocarbons to olefin and aromatic compounds. The novel processes comprise adding calcium aluminate to a catalyst composition comprising a zinc aluminate support and a catalyst metal, and optionally a promoter metal.