MANNICH POST-TREATMENT OF PIBSA DISPERSANTS FOR IMPROVED DISPERSION OF EGR SOOT

摘要

A composition of the reaction product of (a) an polyisobutylene substituted succinimide dispersant; (b) an amine component comprising at least one aromatic amine containing at least one N-H group capable of condensing with said carboxylic acid functionality; and (c) an aldehyde; which may optionally be reacted with (d) a maleinated copolymer, is a useful dispersant viscosity modifier.