Trithio- and tetrathiophosphoric acid esters, processes for their manufacture, manufacture and use of trithio- and tetrathiophosphoric acid esters

摘要

Trithio- and tetrathiophosphates with mercaptocarboxylic acid derivatives are preeminently suitable as extreme pressure additives for lubricants. They reduce signs of wear and have no or only an insignificant corrosive action on the parts to be protected.