LUBRICATING OIL COMPOSITIONS AND CONCENTRATES AND THE USE THEREOF

摘要

Case EI-6311 LUBRICATING OIL COMPOSITIONS AND CONCENTRATES AND THE USE THEREOF Oleaginous compositions and additive concentrates therefor having enhanced performance characteristics comprise at least a) one or more oil-soluble metal hydrocarbyl dithiophosphates or dithiocarbamates; and b) one or more oil-soluble boron-free additive compositions formed by heating (i) at least one boron-free oil-soluble ashless dispersant containing basic nitrogen and/or at least one hydroxyl group, with (ii) at least one inorganic phosphorus acid such that a liquid boron-free phosphorus-containing composition is formed.