Patent ID: 7339003

Claim:
A graft having enhanced thermal oxidative stability, comprising: (a) a basestock grafted to an antioxidant additive (b) the basestock is selected from the group consisting of mineral oils, polyol esters, polyalpha olefins, fuels, oligomers, polymers, copolymers and mixtures thereof; and (c) the antioxidant additive comprising: (i) at least one oxazoline and at least one polyol ester; and (ii) a reaction product of at least one polyol diacrylate and at least one general antioxidant YH, wherein Y is selected from the group consisting of RS, R 2 N, (RO) 2 PHO, phenols and mixtures thereof, R is an aliphatic or cyclo-aliphatic group having from about 2 to 20 carbon atoms, S is a sulfur atom, N is a nitrogen atom, O is an oxygen atom, P is a phosphorus atom and H is a hydrogen atom, whereby the additives from the first (i) and second (ii) group function as antioxidants or antioxidant boosters, and additives from both groups (i) and (ii) are grafted to the basestock.