Abstract: A post-primary oil recovery process wherein the subterranean oil-bearing formation is treated by the sequential injection of (1) optional aqueous preflush to adjust connate water salinity, (2) aqueous saline surfactant system containing at least one acylated polypeptide salt surfactant, (3) optional thickened aqueous mobility buffer and (4) an aqueous drive, for the recovery of oil driven from the formation thereby.

Abstract: A propylene polymer composition containing a clarifier and a small amount of a hydrotalcite to enhance the effect of the clarifier. The resulting composition is of particular value as an injection molding grade resin.

Abstract: A process and catalyst for the acetoxylation of propylene, said catalyst consisting essentially of palladium, bismuth, potassium, and rubidium.

Abstract: H.sub.2 is produced from H.sub.2 S dissolved in an alkaline aqueous medium by irradiating the alkaline aqueous solution of H.sub.2 S using light in the visible range in the presence of a catalytic amount of a compound chosen from the group of ZnO, ZnO-RuO.sub.2, ZnS, ZnSe and CuGaS.sub.2.

Abstract: An improved process for dehydrating alcohols in which the catalyst used in the dehydration process is activated using an organic carboxylic acid.

Abstract: The yield and the selectivity of an oxidation reaction of alkyl substituted benzenes to ketones and phenols in the present of hydrogen bromide is increased through the use of cerium oxide, triphenylborate, boron phosphate and water.

Abstract: A process for gasifying carbonaceous solids in a rotating zone is disclosed wherein the gasifying agents are injected into a tumbling bed of the solids through an elongated, rotating tubular flow path (19) positioned and supported so as to remain in the tumbling bed during rotation of the zone. The invention is particularly useful in rotary kilns where coal, lignite, peat, heavy oil residual, and other carbonaceous materials are gasified using injected steam, oxygen or air.

Abstract: A method for affecting the crystallization of poly(phenylene sulfide), i.e., lowering the melt crystallization temperature or lowering the rate of crystallization of the polymer, in which phenylene sulfide polymer is contacted with polyvalent metal cations in solution, preferably aqueous at a temperature and for a time sufficient to affect the crystallization of the polymer.

Abstract: An impact polyamide composition is provided by incorporating a nitrogen-containing conjugated diene/monovinyl-substituted aromatic compound copolymer with the polyamide. The resulting composition has greatly enhanced impact characteristics. In a further embodiment an organic phosphite or phosphonate is incorporated in addition which has the effect of dramatically reducing notch sensitivity of the resulting composition.

Abstract: A polymerflood oil recovery process comprising the use of low molecular weight polymers of alpha,beta-unsaturated mono- and dicarboxylic acids and alkali metal salts thereof in aqueous polymer slugs to stabilize the solution viscosity of said slugs throughout a polymerflooding process in which adverse subterranean conditions are encountered, such as high temperature, high salinity and/or high concentrations of "hardness" ions.

Abstract: A composition and method for forming the composition providing a molding composition of poly(arylene sulfide) and a crack resistance and/or an impact strength improving amount of a polymeric rubber chosen from among silicone rubber, ethylene-acrylic rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, and poly(butyl acrylate) rubber. In embodiments of the invention the improvement is enhanced by the addition of organosilane to the composition.

Abstract: A continuous method and apparatus for contact of olefin with paraffin in the presence of HF catalyst to produce alkylate in which about one half of the olefin feedstock is passed to each of two riser reactors with product effluent from both reactors entering a common settling vessel with return of settled HF catalyst proportioned between the two reactors and the paraffin feedstock provided as fresh or alkylate fractionator side stream recycle to one reactor and as reaction product recycle from the settler to the other reactor.

Abstract: A cyclonic agglomerator is used in the inlet line for quenched carbon black smoke into a bag house to increase the efficiency of carbon black processing.

Abstract: A method for removing residual solvent dissolved in non-sticky crumb particles produced by solution polymerization that have been treated substantially to remove solvent from the polymer surface. Particles are transferred into a closed storage zone under inert atmosphere conditions and are maintained for a period of time sufficient to allow diffusion of solvent from the particles as free solvent. Inert gas is then passed through the storage zone to remove the free solvent. The processes of allowing diffusion followed by purging of the free solvent is repeated as necessary.

Abstract: Mine-run lignite having an unsalably high content of ash-producing clay is treated selectively to shatter the more friable portions; the effluent from the shattering operation is classified by size; at least the classification containing the smallest particles is discarded; and particles of size larger than those discarded are combined to produce a mixture of lower ash producing clay content. Preferably, the classified effluent is separated into a first portion containing the larger, salable particles; a second portion containing medium-size particles which contains too much clay to be readily salable with the medium-size particle mixture subjected to further treatment such as jigging or heavy media separation to yield a product of clay content that is salable; and a third portion of smaller size particles which is discarded.

Abstract: A method for mixing and transferring polymer-coated catalyst compositions includes agitating the polymer compositions in a vessel having an agitator and a cylindrical outlet conduit. Further agitating the compositions in the outlet conduit by a spirally configured extension of the agitator and then passing the compositions from the outlet conduit.

Abstract: A method and apparatus for the continuous overbasing of petroleum sulfonate in which a pipe reactor having a multiplicity of feed points along the reactor is used to contact a reaction mixture of neutral petroleum sulfonate, 100 neutral lube oil stock, lime, methanol, and naphtha with a counterflow of carbon dioxide.

Abstract: A method for removing the mineral sediment from a crude oil processing system which entails filtering a topped crude oil to remove mineral sediment and backwashing the removed sediment using topped crude oil with subsequent recycle of the backwash stream to a point in the process prior to a desalting operation.

Abstract: A method for producing poly(arylene sulfide) of high molecular weight by subjecting to polymerization conditions a reaction mixture of alkaline metal hydroxide, halothiophenol and organic amide with a molar ratio of alkaline metal hydroxide to halothiophenol in a range of about 1.6 to about 3.2.

Abstract: A pair of substantially identical half-sections adapted to be wedged around a rod in locked position with the half-sections stamp molded from a prepreg formed by surrounding at least one fiber mat of inorganic reinforcing material with a matrix of PPS to produce a prepreg containing from about 15 to about 45 weight percent of the inorganic reinforcing material.