Sulfurized compositions
AssigneeThe Lubrizol Corporation
InventorsKirk Emerson Davis, Thomas Frederick Holden
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Abstract
Sulfurized compositions are prepared by the reaction of unsaturated compounds and a mixture of sulfur and hydrogen sulfide under superatmospheric pressure, followed by removal of low boiling materials. They are useful as lubricant additives.
Claims37
A method for the preparation of a sulfurized composition which comprises the steps of reacting at about 50.degree.-300.degree. C., under superatmospheric pressure, sulfur and hydrogen sulfide with at least one terminal aliphatic monoolefinic compound containing about 3-30 carbon atoms to form a sulfurized mixture;
- about 0.7-1.2 gram-atoms of sulfur and about 0.1-1.5 moles of hydrogen sulfide being used per mole of monoolefinic compound;
- and removing from said sulfurized mixture substantially all low boiling materials including unreacted monoolefin, mercaptan and monosulfide.
A method for the preparation of a sulfurized composition which comprises the steps of reacting at about 50.degree.-300.degree. C., under superatmospheric pressure, sulfur and hydrogen sulfide with at least one terminal aliphatic monolefin containing less than 7 carbon atoms to form a sulfurized mixture, about 0.7-1.2 gram-atoms of sulfur and about 0.1-1.5 moles of hydrogen sulfide being used per mole of monoolefin;
- and removing from said sulfurized mixture substantially all low boiling materials including unreacted monoolefin, mercaptan and monosulfide.
Dependencies are inferred from the claim text.