| 摘要 |
<p>Novel sulphurized compounds, their preparation and use. The compounds are based on the general formula {[R-Sx-(CH2)n-]z CH3-z-(CH2)p-}2 Sy, in which R is a monovalent hydrocarbon radical having 1 to 30 carbon atoms, optionally functionalized; x is a number equal to or greater than 1; z is an integer equal to 1 or 2; when z = 1, n is an integer from 0 to 3 and p is an integer from 0 to 3, with n + p being an integer from 0 to 3; when z = 2, n is an integer from 1 to 3 and p is an integer from 0 to 3; and y is a number equal to or greater than 1, at least one of the numbers x and y being strictly greatly than 1. The sulphurized compounds can be used as extreme pressure or wear prevention additives in lubricating oils, in particular in oils for gear systems and those used in working metal.</p> |
