Exxon Research and Engineering Company

Exxon Chemical Patents, Inc.

Keith U Ingold

Ricardo A Bloch

Nicholas Charles Nahas

John B Gardiner

John W Frankenfeld

Theodore V Kowalchyn

Anthony A Loffredo

The addition of certain alkylamine substituted benzotriazole compounds to a lubricant imparts improved oxidation stability and rust inhibition to the lubricant.

Alkylamine substituted benzotriazole containing lubricants having

The molecular weight and the thickening efficiency of primarily oil soluble hydrocarbon polymers, such as hydrogenated random copolymers and block copolymers of styrene-isoprene or styrene-butadiene, polyisobutylene, poly-n-butene, low unsaturation butyl rubbers, low unsaturation EPDM rubbers, preferably ethylene-propylene copolymers, of the type which are to be used as viscosity index improver additives or as precursors for dispersants and multi-functional viscosity improver additives for lubricating oils, are reduced by heating and masticating the polymers in the presence of oxygen or air and in the presence of a transition metal catalyst, preferably in the further presence of a peroxide accelerator.

Catalytic process for oxidative, shear accelerated polymer degradation

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Ottawa, Canada

Keith U Ingold