UN PROCEDIMIENTO PARA LA PREPARACION DE UNA COMPOSICION MUL-TICOMPONENTE, PARA USO COMO ADITIVO DE LUBRICANTE.

摘要

Compositions comprising at least one sulfurized alkyl phenol and an oil- soluble carboxylic dispersant containing a hydrocarbon-based radical having a no. average mol. wt. of at least 1300 attached to a polar group are useful as lubricant additives. They impart improved dispersancy and viscosity modifying properties to the lubricants under severe engine operation conditions. Preferred compositions are those also containing ash-producing detergents such as mixtures of basic calcium and basic magnesium sulfonates.