Abstract: Novel block copolymers containing at least two segments, in which segment A is either a polymerized alkyl-substituted styrene, the alkyl group having at least 3 carbon atoms, or a hydrogenated block of random butadiene-styrene copolymer and from 1 to about 50% by weight of segment B being an alkylene oxide or sulfide copolymerized with the first segment as an AB or BAB copolymer, perform as multifunctional additives in industrial organic compositions, both hydrocarbon fluids, such as petroleum-derived, and non-hydrocarbon, or synthetic fluids, providing such utility as detergency and viscosity index improvement. These copolymers have molecular weights in the range of from about 1,000 to 300,000. The copolymers are particularly useful in lubricating oils, greases and fuels, especially cross-graded lubricants, Diesel oils, gasoline and fuel oils. Copolymers capped with metal diisocyanate have excellent thermal and oxidative stability.

Abstract: In preparing organic sulfides by reacting olefins (e.g., butylenes) with a sulfur halide to form a sulfohalogenated intermediate which is subsequently sulfurized and dehalogenated by reaction with an aqueous solution of an alkali metal sulfide compound to form a noncorrosive organic sulfide product of high sulfur content, blackening of both the intermediate and the final product is prevented by employing an inert gas as a purge during formation of the olefin-sulfur halide adduct.

Abstract: A crystalline aluminosilicate zeolite catalyst made by a process comprising the steps of exchanging the zeolite, heating it, compositing the resulting product with a porous matrix and reexchanging the composite product is provided. The invention also provides a method of converting a hydrocarbon charge using such catalyst.

Abstract: Lubricants containing a mixture of p,p'-dioctyldiphenylamine and substituted naphthylamines have improved antioxidant properties.