POLYCYCLIC THIOPHEN LUBRICATING OIL ADDITIVE AND METHOD OF REDUCING COKING TENDENCIES OF LUBRICATING OILS

摘要

ABSTRACT OF THE DISCLOSUREInexpensive lubricating oil antioxidants having asolubilizing group which comprises alkyl and cycloalkyl-substituted aromatics and a reducing thiophenyl group, whichare useful motor oil additives. Method of reducing cokingtendencies of lubricating oils by incorporating thesubstituted aromatic antioxidants.