| abstract |
Epithio compounds or mercaptans of the formula I. R - X - CH₂ - - H - Q (I), wherein X is an oxygen or sulfur atom, the groups -CH₂-, -CH (R₁) -, -COO-, -NH- or -NR₁-, Y and Z are each hydrogen or together a direct bond, Q, whom Y and Z together represent a direct bond, hydrogen is or Q is the groups -OH, -SH, -OR₁, -SR₁, -OOCR₁, -S- (CH₂) - n OH, -S- (CH₂) - n COOR₁, -NHR₁ or -N (R₁) ₂, n are the numbers 1 to 10, R and R₁ each independently of one another, optionally interrupted by oxygen or sulfur, cyclic or acyclic hydrocarbon radical aliphatic or aromatic character with 4-30 carbon atoms with the condition that the sum of the C -Atoms in the groups R and R₁ is 8-30 carbon atoms, are excellent as lubricant additives, especially as "extreme pressure" and "antiwear" additives. |