A composition comprising: (A) a metal salt of (A)(I) at least one acid of the formula ##STR1## wherein each X and X.sup.1 is independently oxygen or sulfur, each n is zero or one, and each R.sup.1 is independently the same or different hydrocarbon based group, and (A)(II) at least one carboxylic acid of about 2 to about 40 carbon atoms, the ratio of equivalents of (A)(I) to equivalents of (A)(II) being in the range of about 0.5:1 to about 1:0; and (B) an olefinically unsaturated compound capable of reacting with active sulfur. Compositions comprising the foregoing composition reacted with active sulfur are also disclosed. Lubricants and functional fluids comprising the foregoing compositions are disclosed. A process comprising reacting active sulfur with an olefinically unsaturated compound in the presence of component (A) is also disclosed.
An engine and lubricating oil having superior anti-wear properties without necessitating use of phosphorus-containing anti-wear additives is provided which is particularly useful in automotive, industrial, and gear lubricants. The anti-wear engine and lubricating oil comprises an anti-wear component including benzotriazole or the reaction product of benoztriazole, combined with a formaldehyde-containing component and at least one primary or secondary aliphatic amine, a sulfur-containg compound, a metallic component, and a lubricating base oil.
The present invention provides a grease for copper electrical contacts having excellent properties which comprises polyol complex ester base oil and a specific amount of particular additives, i.e. quaternary ammonium salt-containing clay mineral, secondary aromatic amine antioxidant and a copper deactivator selected from the group consisting of benzotriazoles, thiodiazoles, and N,N'-disalicylidene- 1,2-diaminopropane. The grease according to the present invention can be applied effectively to a copper slide contact under both low temperature (ca.- 40.degree. C.) and high temperature (ca. 160.degree. C.) conditions.
A process for the manufacture of a low sediment overbased metal dithiophosphate composition is disclosed. The process uses delayed addition of a C.sub.1 to C.sub.5 mono-carboxylic acid promoter during the neutralization of a primary dialkyl dithiophosphoric acid. The process results in reducing crude sediment whereby the resulting overbased metal dithiophosphate may need not undergo additional filtration steps prior to its intended use.
Hydraulic fluids for automobile suspensions are described. They contain, as a base oil, a mixed oil which in turn contains 70-90 wt. % of an olefin oligomer and 10-30 wt. % of a diester obtained by condensation of an aliphatic dibasic acid having 4-14 carbon atoms and an alcohol having 4-14 carbon atoms. The hydraulic fluids also comprise a phosphate ester friction modifier to improve the friction characteristics and antiwear characteristics in an initial stage and at least one friction modifier selected from the group consisting of phosphite esters and phosphoric ester amine salts to retain low friction characteristics over a long period of time.
Basic metal dihydrocarbylphosphorodithioates and phosphoromonothioates are prepared by employing a catalytic amount of an alkali metal or alkaline earth metal hydroxide or mixtures thereof. Also basic, multiple metal complexes of various dihydrocarbylphosphorodithioic acids have been developed. These salts and complexes are highly effective antiwear and antioxidant additives for functional fluids, e.g., lubricating oils.
