Process for making sulfurized olefins
AssigneeMobil Oil Corporation
InventorsAndrew G. Horodysky, Phillip S. Landis
Life of this patent
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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, the copper strip corrosion activity is improved by resulfurizing the sulfurized olefin by contacting it with additional aqueous metal sulfide in the presence of a lower molecular weight alcohol, such as isopropanol.
Claims16
An organic sulfide produced by an improved process comprising the steps of:
- (1) reacting sulfur halide with an olefin, the olefin to sulfur halide molar ratio ranging from about 1:1 to about 1.65:1;
- and
- (2) reacting the product of (1) with an alkali metal sulfide;
- (3) the improvement comprising reacting the product of (2) with a separate portion of an aqueous solution comprising alkali metal sulfide such that the alkali metal sulfide is present to the extent of from about 0.2 mole to about 1.2 mole of sulfide per mole of the product of (2).
An improved process for producing an organic sulfide comprising the steps of:
- (1) reacting sulfur halide with an olefin, the olefin to sulfur halide molar ratio ranging from about 1:1 to about 1.65:1;
- and
- (2) reacting the product of (1) with an alkali metal sulfide;
- (3) the improvement whereby the product of (2) is reacted with a separate portion of an aqueous solution comprising alkali metal sulfide such that the alkali metal sulfide is present to the extent of from about 0.2 mole to about 1.2 mole of sulfide per mole of the product of (2).
Dependencies are inferred from the claim text.