| abstract |
New compositions comprising (A) certain sulfur compounds and (B) at least one detergent carboxylic composition. These compositions are useful as additives in lubricants and functional fluids, fuels and aqueous systems. The lubricants, fuels and functional fluids containing the derivatives according to the invention have improved antioxidant, anti-wear, thermal stability and / or resistance to extreme pressures properties. The compositions according to the invention comprise the combination of (A) at least one sulfur compound characterized by the structural formula (I) in which R1, R2, R3, R4, G1 and G2, and x are defined below; and (B) at least one dispersing carboxylic composition prepared by reacting a succinic acid-producing compound substituted with a hydrogen carbide with at least half an equivalent per equivalent of said compound of an organic hydroxy compound, or with a amine containing at least one hydrogen atom linked to a nitrogen atom, or with a mixture of the hydroxy compound and the amine. |