Mercaptan as an additive for lubricants

Details Mercaptan as an additive for lubricants Mercaptan as an additive for lubricants

1979-11-26

1981-04-07

Shine, W. J.

Compositions

Electrolytes for electrical devices

252 482, 560152, 568 39, 568 57, 568 62, C10M 120, C10M 138, C07C14906, C07C14920

Patent

active

042605032

ABSTRACT:
Epithio compounds or mercaptans of the formula I ##STR1## wherein X is an oxygen or sulfur atom, --CH.sub.2 --, --CH(R.sub.1)--, --COO--, --NH-- or --NR.sub.1 --, each of Y and Z is hydrogen or together they are a direct bond, Q is hydrogen if Y and Z together are a direct bond, or is --OH, --SH, --OR.sub.1, --SR.sub.1, --OOCR.sub.1, --S--CH.sub.2).sub.n OH, --S--CH.sub.2).sub.n COOR.sub.1, --NHR.sub.1 or --N(R.sub.1).sub.2, n is an integer from 1 to 10, each of R and R.sub.1 independently is a cyclic or acyclic hydrocarbon radical of aliphatic or aromatic character containing 4 to 30 carbon atoms which can be interrupted by oxygen or sulfur, with the proviso that the groups R and R.sub.1 contain a total number of 8 to 30 carbon atoms. These compounds have excellent suitability for use as additives for lubricants, especially as extreme pressure and antiwear additives.

REFERENCES:
patent: 2073841 (1937-03-01), Humphreys et al.
patent: 3314888 (1967-04-01), Matson
patent: 3660497 (1972-05-01), Priestley et al.
Snyder et al., J. Amer. Chem. Soc., 69, pp. 2675-2677 (1947).
Meade et al., J. Chem. Soc., pp. 1894-1895 (1948).

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