POLYPHENOLICS AS LUBRICANT OIL ADDITIVES

摘要

A process for preparing an oligomeric phenolic detergent composition comprising contacting an oil soluble alkylphenol with an alkaline earth metal base, an alpha amino acid, and a C1 to C6 aldehyde, in the in the presence of a C2 to C6 alkylene glycol and a C2 to C4 carboxylic acid; and reacting under reactive condition s at a temperature of from 150.degree.C to 225.degree.C. The oligomeric phenolic detergent product can be employed in a lubricating oil.