Preparation of sulfurized olefins
AssigneeMobil Oil Corporation
InventorsAndrew G. Horodysky, Paul T. Allen
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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.
Claims8
In the process of preparing organic sulfides by (1) sulfohalogenating an olefin with a sulfur halide to form a sulfohalogenated organic intermediate and thereafter (2) sulfurizing and dehalogenating said intermediate by subsequent reaction with an alkali metal sulfide, the reaction in (1) being run so as not to exceed 160.degree.F and using an olefin to sulfur halide ratio of from about 1:1 to about 1:65:1 and the reaction in (2) being run at from about 150.degree. to about 250.degree.F using at least a stoichiometric amount of alkali metal sulfide, the improvement which comprises purging the reaction mixture in (1) with nitrogen prior to any substantial darkening of said intermediate.
Dependencies are inferred from the claim text.