OVERBASIC CALIXARATE, METHOD FOR PREPARING THE SAME AND LUBRICATING OIL COMPOSITION CONTAINING THE SAME

摘要

An overbased metal salt of a sulphur-free calixarene having a substituent hydroxyl group or groups available for reaction with a metal base, the calixarene having a molecular weight of at least 1880. A process for the production thereof and lubricating oil compositions comprising said overbased metal calixarater.