Multipurpose oxypyridinones and their functional use-4

A lubricant composition comprising:

• a Group I, Group II, Group III, Group IV, and/or Group V lubricating oil basestock;
• a compound of structure (I):
• wherein:
• each A is individually an oxygen atom, a sulfur atom, an oxymethyl (—CH2—O—) moiety, or a methylthio (—CH2—S—) moiety;
• R1 is hydrogen;
• an ammonium ion;
• a C1-C6 monoalkylammonium ion;
• a C1-C6 dialkylammonium ion;
• a C1-C6 trialkylammonium ion;
• a C1-C6 tetraalkylammonium ion;
• a C1-C6 monoalkylsilyl moiety;
• a C1-C6 dialkylsilyl moiety;
• a C1-C6 trialkylsilyl moiety;
• an optionally substituted aryl, alkyl, alkaryl, or aralkyl sulfonyl moiety;
• a linear, branched, and/or cyclic C1-C20 hydrocarbyl sulfide;
• a linear, branched, and/or cyclic C1-C20 hydrocarbyl moiety;
• an at least partially halogenated linear, branched, and/or cyclic C1-C20 moiety;
• an ether-containing linear, branched, and/or cyclic C1-C20 moiety;
• a thioether-containing linear, branched, and/or cyclic C1-C20 moiety;
• an ester-containing linear, branched, and/or cyclic C1-C20 moiety;
• a thioester-containing linear, branched, and/or cyclic C1-C20 moiety;
• a linear, branched, and/or cyclic C1-C20 acyl moiety;
• a linear, branched, and/or cyclic C1-C20 thioacyl moiety;
• a linear, branched, and/or cyclic C1-C20 hydrocarbyloxyacyl moiety;
• a linear, branched, and/or cyclic C1-C20 hydrocarbyloxythioacyl moiety;
• a linear, branched, and/or cyclic C1-C20 hydrocarbylthiocarbonyl moiety;
• a linear, branched, and/or cyclic C1-C20 hydrocarbylthio-thioacyl moiety;
• an amide-containing linear, branched, and/or cyclic C1-C20 moiety;
• a thioamide-containing linear, branched, and/or cyclic C1-C20 moiety;
• a ketone-containing linear, branched, and/or cyclic C1-C20 moiety;
• a thioketone-containing linear, branched, and/or cyclic C1-C20 moiety;
• an aldehyde-containing linear, branched, and/or cyclic C1-C20 moiety;
• a thioaldehyde-containing linear, branched, and/or cyclic C1-C20 moiety;
• a mercaptan-containing linear, branched, and/or cyclic C1-C20 moiety;
• a hydroxyl-containing linear, branched, and/or cyclic C1-C20 moiety;
• a nonionic linear, branched, and/or (hetero) cyclic moiety containing 1 to 20 carbon atoms at least one nitrogen atom, and optionally at least one sulfur and/or oxygen atom;
• or another compound of structure (I) connected as an ether or thioether at a meta position to the ring nitrogen thereof;
• R2 is hydrogen;
• a halogen;
• a linear, branched, and/or cyclic C1-C12 hydrocarbyl moiety;
• an at least partially halogenated linear, branched, and/or cyclic C1-C12 moiety;
• an amine-containing linear, branched, and/or cyclic C1-C20 moiety;
• an ether-containing linear, branched, and/or cyclic C1-C20 moiety;
• a hydroxyl-containing linear, branched, and/or cyclic C1-C12 moiety;
• an aldehyde-containing linear, branched, and/or cyclic C1-C20 moiety;
• or a nitrile-containing linear, branched, and/or cyclic C1-C20 moiety;
• R3 is hydrogen;
• a halogen;
• or a linear, branched, and/or cyclic C6-C24 hydrocarbyl moiety;
• R4 is hydrogen;
• a halogen;
• a linear, branched, and/or cyclic C1-C12 hydrocarbyl moiety;
• an at least partially halogenated linear, branched, and/or cyclic C1-C12 moiety;
• an amine-containing linear, branched, and/or cyclic C1-C20 moiety;
• an ether-containing linear, branched, and/or cyclic C1-C20 moiety;
• a hydroxyl-containing linear, branched, and/or cyclic C1-C12 moiety;
• an aldehyde-containing linear, branched, and/or cyclic C1-C20 moiety;
• or a nitrile-containing linear, branched, and/or cyclic C1-C20 moiety;
• and
• R5 is hydrogen;
• a halogen;
• a linear, branched, and/or cyclic C1-C12 hydrocarbyl moiety;
• an at least partially halogenated linear, branched, and/or cyclic C1-C12 moiety;
• a hydroxylated linear, branched, and/or cyclic C1-C6 moiety;
• or an R1-A-moiety;
• or alternatively one or more of R1 and R2, R2 and R3, R3 and R4, and R4 and R5 may together form one or more (hetero) cyclic rings;
• with the proviso that R1 and R3 are not both hydrogen;
• and
• either:
• an optionally substituted triazole corrosion inhibitor, an optionally substituted benzotriazole corrosion inhibitor, an optionally substituted thiadiazole, an optionally substituted thiadiazole corrosion inhibitor, an ashless dihydrocarbyl dithiocarbamate, a C8-C18 acrylate, a C2-C6 dialkylene glycol diester, a tri-hydrocarbyl C1-C8 borate corrosion inhibitor, or a combination thereof;
• or
• substantially none of the following:
• an optionally substituted triazole corrosion inhibitor;
• an optionally substituted benzotriazole corrosion inhibitor;
• an optionally substituted thiadiazole corrosion inhibitor;
• an ashless dihydrocarbyl dithiocarbamate;
• a C8-C18 acrylate;
• a C2-C6 dialkylene glycol diester;
• and a tri-hydrocarbyl C1-C8 borate corrosion inhibitor;
• and
• at least one additional lubricant additive selected from the group consisting of a calcium- and/or magnesium-containing detergent, an ashless dispersant, an additional corrosion inhibitor, an antioxidant, a friction modifier, an antiwear agent, an antifoamant, a viscosity modifier, a pour point depressant, a tackifier, a demulsifier, an extreme pressure agent, a seal swell agent, and a combination thereof.