Abstract: A process for the dehydrogenation of paraffinic hydrocarbons containing from 3 to 6 carbon atoms to the corresponding monoolefin, wherein the process is carried out in the vapor phase, in the presence of oxygen and in the presence of an improved oxidative dehydrogenation catalyst containing cobalt and molybdenum.

Abstract: This invention relates to an improved process for the dehydrogenation of alkyl-substituted aromatic compounds to the corresponding alkenyl-substituted aromatics in the presence of oxygen and in the presence of an improved metal phosphate catalyst composition.

Abstract: Catalysts consisting of a base support having a strongly adherent outer coating of an active catalytic material have been found to give superior results in known hydrogen processing reactions wherein sulfur, nitrogen and the metal content of a hydrogen feedstock are reduced.

Abstract: Propylene and benzene are directly reacted in a single step process for making indene by means of a liquid phase catalytic reaction using a gold complex as the catalyst.

Abstract: Separation of certain water soluble organic monomers such as acrylic acid from an aqueous solution can be accomplished by extraction with carbon dioxide, crystallizing the extract to remove carbon dioxide hydrate, and flashing off the remaining carbon dioxide solvent from the extract.

Abstract: Five, six and seven member nitrogen-containing saturated heterocyclic compounds can be prepared by the catalytic hydrogenation/cyclization of beta, gamma and delta-cyanoesters. Applicants have discovered that this reaction is especially effective when it is conducted in the presence of catalysts comprising at least one of ruthenium and iron.

Abstract: The present invention relates to a process for the production of unsaturated aliphatic acids and the catalyst therefor, by the vapor phase oxidation of the corresponding unsaturated aliphatic aldehydes with molecular oxygen, optionally in the presence of steam, in the presence of an oxidation catalyst consisting of the oxides of the elements molybdenum, vanadium, tungsten and lanthanum, and optionally one or more of the oxides of the elements manganese, iron, copper, aluminum, cobalt, nickel, phosphorus, zinc, bismuth, silver, cadmium, niobium, arsenic, chromium, the alkali and the alkaline earth elements.

Abstract: This invention relates to an improved process for the dehydrogenation of alkyl-substituted aromatic compounds to the corresponding alkenyl-substituted aromatics in the presence of oxygen and in the presence of an improved metal phosphate catalyst composition.

Abstract: Tellurium catalysts containing at least iron, tellurium and molybdenum plus one of nickel, cobalt or magnesium have been discovered to be especially useful for ammoxidation reactions.

Abstract: The inclusion of a small amount of an ester-type plasticizer in the rubber polymerization recipe in the production of rubber-modified high nitrile copolymer resins produces resins having markedly improved impact resistance at both low and high temperatures.

Abstract: The present invention provides a method for the preparation of oxidation catalysts containing mixed oxides of vanadium and phosphorus, which catalysts are particularly effective in the oxidation of n-butane, n-butenes, 1,3-butadiene or a mixture thereof with molecular oxygen or an oxygen-containing gas in the vapor phase to produce improved yields of maleic anhydride with good selectivity. A vanadium compound is at least partially solubilized in an organic liquid medium capable of reducing at least a portion of the vanadium to a +4 valence state, and unsolubilized vanadium having a particle size larger than about 0.1 mm diameter is removed from the medium before addition of a phosphorus-containing compound.

Abstract: A blend of a styrene-butadiene block copolymer rubber, a nitrile barrier resin, and a high impact polystyrene is used as a tie layer to adhere together co-extruded nitrile barrier resin and high impact polystyrene.

Abstract: In the coating of the surface of metal substrates with an acrylonitrile copolymer from an aqueous latex of said copolymer, the adhesion of the copolymer to the metal surface is improved by the inclusion in the latex of a condensation product of certain metal hydroxides or borates with a certain type of phosphate emulsifier.

Abstract: Maleic anhydride is produced by the oxidation of 1,3-butadiene, n-butylenes, crotonaldehyde and furan with molecular oxygen in the vapor phase in the presence of catalytic oxides of antimony, molybdenum, at least one element selected from the group consisting of niobium, zirconium, titanium and tantalum and optionally a reducing agent capable of reducing at least part of the molybdenum in the catalyst to a valence state below +6 selected from the group consisting of hydrazine hydrate, molybdenum, tungsten, magnesium, aluminum, and nickel. This catalyst may optionally contain one or more elements selected from the group consisting of Li, Ag, Ce, Cd, Co, As, Si, Zn, Ge, Bi, Ru, Pt, U, Al and Ni. Preferred catalysts contain Nb, Zr, Ta or Ti in combination with Nb, Zr, or Ta. Especially desirable yields of maleic anhydride are obtained from 1,3-butadiene in the presence of a catalyst wherein molybdenum metal is used as a reducing agent.

Abstract: Nitrile polymer solids having good stability against loss of impact strength and resin yellowing are recovered from latex with minimal or no use of stabilizers in a screw extruder.

Abstract: Oxygenated organic compounds, e.g. esters, aldehydes, and amides, are prepared by reacting an olefinically unsaturated compound with carbon monoxide and a compound containing a replaceable hydrogen atom in the presence of a catalyst comprising cobalt or ruthenium carbonyl and a promoter ligand. The promoter ligand is selected from the group consisting of heterocyclic nitrogen compounds and phosphorus or sulfur oxides. These reactions are carried out under relatively mild conditions of temperature and pressure.

Abstract: Metal surfaces such as steel, tin-plated steel, and aluminum are coated and protected from corrosion by means of an impermeable coating from a latex of a high nitrile polymer.

Abstract: Substantial operating cost savings are realized in the recovery of acrylonitrile from an aqueous solution containing acrylonitrile by using the recovery column bottoms stream to provide heat to one or more distillation columns in the process.

Abstract: Oxygenated organic compounds, e.g. esters, aldehydes, and amides, are prepared by reacting an olefinically unsaturated compound with carbon monoxide and a compound containing a replaceable hydrogen atom in the presence of a catalyst comprising cobalt and/or ruthenium carbonyl and a polyamine promoter ligand. These reactions are carried out under relatively mild conditions of temperature and pressure.

Abstract: In the production of lubricating oil blend stocks obtained by the distillation, extraction, dewaxing and clay contacting of atmospheric crude distillation column residue, the improvement comprising using a hydrogenated gas oil to supplement the atmospheric crude distillation column residue feedstock.