Amide/ester heterocyclic derivatives of hydrocarbylsuccinic anhydrides as rust/corrosion inhibiting additives for lubricants

The composition of claim 10 wherein the lubricant contains from about 0.001 to about 10 wt % based on the total weight of the composition of the additive product of reaction.

A process of preparing a multifunctional antiwear, corrosion inhibiting, rust inhibiting thermal color stabilizing, antioxidant, detergent, dispersant product additive prepared by reacting (1) a hydrocarbylsuccinic anhydride or its acid equivalent with (2) a hydroxyl-containing amine and (3) an aryltriazole wherein the reaction is carried out in molar ratios of said anhydride to amine to triazole varying from 100/80/80 to 100/10/1 at temperatures varying from ambient to about 250.degree. C., under pressures varying from ambient to about 100 psi for a time sufficient to obtain the desired additive product of reaction.

The process of claim 13 wherein the hydrocarbylsuccinic anhydride has the following structural ##STR6## wherein R.sub.1 is C.sub.1 to about C.sub.300 hydrocarbyl and where hydrocarbyl is selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl which may be cyclic or polycyclic and optionally contains O, N, S or mixtures thereof and wherein the hydroxyl-containing amines are selected from amines having the following structural formulas:

• ##STR7## where R.sub.2 is hydrogen or C.sub.1 to about C.sub.100 hydrocarbyl, R.sub.3, R.sub.4, and R.sub.5 are hydrogen or C.sub.1 to about C.sub.60 hydrocarbyl and where R.sub.6 is C.sub.2 to about C.sub.25 hydrocarbyl and wherein hydrocarbyl is selected from the group consisting of alkyl, alkenyl, aryl, alkaryl or aralkyl and optionally contains O, S, or N or mixtures thereof and where X=0-20, Y=0-20, Z=-20, and X+Y+Z must equal at least 1.

A multifunctional antiwear, corrosion inhibiting rust inhibiting, and thermal color stabilizing lubricant additive product of reaction prepared by reacting (1) a hydrocarbylsuccinic anhydride or its acid equivalent with (2) a hydroxyl-containing amine and (3) a triazole wherein the reaction is carried out in molar ratios of said anhydride to amine to triazole varying from 100/80/80 to 100/10/1, at temperatures varying from ambient to about 250.degree. C. or is reflux, under autogenous pressures or pressures varying from ambient to about 100 psi for a time sufficient to obtain the desired additive product of reaction.

The additive product of reaction in accordance with claim 15 wherein the hydrocarbylsuccinic anhydride has the following structural formula:

• ##STR8## where R.sub.1 is C.sub.1 to about C.sub.300 hydrocarbyl and where hydrocarbyl is selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl which may be cyclic or polycyclic and optionally contain O, N, S or mixtures thereof and wherein the hydroxyl-containing amines are selected from amines having the following structural formula:
• ##STR9## where R.sub.2 is hydrogen or C.sub.1 to about C.sub.100 hydrocarbyl, R.sub.3, R.sub.4 and R.sub.5 are hydrogen or C.sub.1 to about C.sub.60 hydrocarbyl and where R.sub.6 is C.sub.2 to about C.sub.25 hydrocarbyl and wherein hydrocarbyl is selected from the group consisting of alkyl, alkenyl, aryl, alkaryl or aralkyl and optionally contains O, S, or N or mixtures thereof and where X=0-20, Y=0-20, Z=0-20, and X+Y+Z must equal at least 1.