Abstract:
A PROCESS FOR DIMERIZING OLEFINS BY CONTACTING C2-18 OLEFINS WITH A CATALYST SYSTEM COMPRISING NICKEL CHELATE AND TRIHYDROCARBYL BORON COMPOUNDS; FOR EXAMPLE, BIS (2,4-PENTANEIONATO) NICKEL AND TRIETHYLBORON, AT TEMPERATURES FROM 100* TO 200*C. AND OPTIONALLY IN THE PRESENCE OF A NON-POLAR SOLVENT.
WHERE X is a halogen, ester, hydroxyl, alkoxy, amine, cyanide, or isocyanate radicals. These compounds are useful as flame retardant additives for polymers, especially for polypropylene.
Abstract:
A roast/leach process for recovering metal values from sulfide metal mineral ores or concentrates. The roast step features treating the sulfide mineral at elevated temperatures with a nitrogen dioxide containing gas.
Abstract:
A process for preparing carboxylic acids from about C10 and higher olefins, carbon monoxide, and water using a cobalt catalyst in the presence of a pyridine promoter; such that the pyridine:cobalt molar ratio is from 1:1 to 10:1 is disclosed. The process is carried out in the substantial absence of a ketone or ether solvent.
Abstract:
Process of winning copper from chloride containing solutions by treating with carbon monoxide. Process makes copper separable from iron, and can be applied to leach solutions prepared by treating sulfide ores with HCl in the presence of air or oxygen.
Abstract:
A hydrometallurigical process featuring treating sulfide metal concentrate with hydrochloric acid or hydrogen chloride gas and an oxygen-bearing gas (air or oxygen) in an aqueous medium to recover metal from said sulfide metal concentrate is disclosed.