Mannich base composition

摘要

New Mannich bases and the alkaline earth metal salts thereof are prepared by condensing formaldehyde and a polyamine with a phenolic mixture consisting of (1) from 95 to 30% phenol alkylated with a propylene tetramer and (2) from 5 to 70% phenol alkylated with a straight-chain alpha-olefin of from 16 to about 28 carbon atoms or alpha-olefin mixtures wherein the alpha-olefins are of from 16 to about 28 carbon atoms. They are useful as additives for lubricating oils, particularly for use in marine cylinder lubricating oils.