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US 4,902,804 AGranted
Multifunctional thiadiazole lubricant additives
AssigneePennwalt Corporation
InventorsJames P. King, Sameeh S. Toukan
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Abstract
The reaction products of the alpha-halogenated half esters or amides of succinic acid and thiadiazole dimercaptides as new compositions of matter and their use as lubricant additives possessing multifunctional properties such as extreme pressure, antiwear, antioxidant and anticorrosion.
Claims26
A compound of the structure
- Z.sub.1 --S--Q--S--Z.sub.2,
- wherein:
- Q is a bivalent thiadiazole ring moiety which is 1,3,4-thiadiazole or 1,2,4-thiadiazole;
- ##STR6## and ##STR7## wherein R and R"' are each, independently, C.sub.1-22 alkoxy, C.sub.2-22 branched or straight chain alkylenoxy, aryl-C.sub.1-22 -alkoxy, OH', or NR'R';
- R' and R" are each, independently, hydrogen, C.sub.1-22 branched or straight chain alkyl, or aryl-C.sub.1-22 -alkyl;
- with the proviso that at least one of R,R', R", or R"' forms a carboxyl with the adjacent carbon atom to which it is linked;
- or an alkali metal or amine salt of said compound.
4 more elements
Dependencies are inferred from the claim text.