High-Sulfur Additive for Transmission Oils

Abstract

A new additive for transmission oils is synthesized by reacting an amylene fraction with sulfur monochloride, followed by sulfidation of the resulting reaction mixture with sodium sulfide. Results are reported from tests of TM-4-12, SAE 80W-85, and API GL-4 transmission oils with the use of the synthesized high-sulfur additive. A basic diagram of the additive production process is proposed.

Catalytic Sulfidation of C12 – C14 α-Olefin Fractions

“…% [8]. It is known that the interaction of the C 16+ -olefin fraction with elemental sulfur in most cases is conducted in the presence of various derivatives of dialkyl dithiophosphoric acid [5,6,9].…”