Cross-sulfurized olefins and fatty acid monoesters in lubricating oils

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1 to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 olefins with derosinified tall oil esters of a C.sub.1 -C.sub.25 alkyl alcohol in a mol ratio of olefin-to-ester of about 1-2:1.

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1% to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 unsaturated fatty acids, C.sub.1 -C.sub.25 alkyl alcohol, and C.sub.10 -C.sub.25 olefins.

A process of producing a cross-sulfurized ester-olefin comprising, the mixing of C.sub.10 -C.sub.25 unsaturated fatty acids, C.sub.1 -C.sub.25 alkyl alcohol and C.sub.10 -C.sub.25 olefins in the mol ratio of about 1:1:1-2 with sulfur, and reacting said mixture in an inert atmosphere at a temperature of about 160.degree. C. to about 180.degree. C.

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1 to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 olefins with fatty acid esters of C.sub.10 -C.sub.25 unsaturated fatty acid and a C.sub.1 -C.sub.25 alkenyl alcohol, in a mol ratio of olefin-to-ester of about 1-2:1.

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1 to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 olefins with derosinified tall oil esters of a C.sub.1 -C.sub.25 alkenyl alcohol in a mol ratio of olefin-to-ester of about 1-2:1.

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1% to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 unsaturated fatty acids, C.sub.1 -C.sub.25 alkenyl alcohol, and C.sub.10 -C.sub.25 olefins.

A process of producing a cross-sulfurized ester-olefin comprising, the mixing of C.sub.10 -C.sub.25 unsaturated fatty acids, C.sub.1 -C.sub.25 alkenyl alcohol and C.sub.10 -C.sub.25 olefins in the mol ratio of about 1:1:1-2 with sulfur, and reacting said mixture in an inert atmosphere at a temperature of about 160.degree. C. to about 180.degree. C.

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1 to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 olefins with fatty acid esters of C.sub.10 -C.sub.25 saturated fatty acid and a C.sub.1 -C.sub.25 alkenyl alcohol in a mol ratio of olefin-to-ester of about 1-2:1.

A lubricating composition comprising a major proportion of a lubricating oil and from about 0.1% to about 10% by weight of a sulfurized mixture of C.sub.10 -C.sub.25 saturated fatty acids, C.sub.1 -C.sub.25 alkenyl alcohol, and C.sub.10 -C.sub.25 olefins.

A process of producing a cross-sulfurized ester-olefin comprising, the mixing of C.sub.10 -C.sub.25 saturated fatty acids, C.sub.1 -C.sub.25 alkenyl alcohol and C.sub.10 -C.sub.25 olefins in the mol ratio of about 1:1:1-2 with sulfur, and reacting said mixture in an inert atmosphere at a temperature from about 160.degree. C. to about 180.degree. C.

A lubricating composition comprising a major proportion of a lubricating oil and an extreme pressure improving amount of a cosulfurized mixture of a C.sub.10 -C.sub.25 olefin with a fatty acid ester of a C.sub.10 -C.sub.25 unsaturated fatty acid and a C.sub.1 -C.sub.25 monohydric alkanol in a mol ratio of olefin-to-ester of about 1-2:1.

A method for preparing a sulfurized composition of matter which comprises reacting at about 160.degree.-180.degree. C. sulfur with a mixture of a C.sub.10 -C.sub.25 olefin with a fatty acid ester of a C.sub.10 -C.sub.25 unsaturated fatty acid and a C.sub.1 -C.sub.25 monohydric alkanol in a mol ratio of olefin to ester of about 1-2:1.