h an epoxyacrylate having the formula (III): ##STR11## wherein R3 and R5 are independently either hydrogen, a hydrocarbyl or a hetero-substituted hydrocarbyl group, R4 is a alkylene, alkylene glycol, aryl or a group containing at least one of an acrylate, acrylamide or oxirane group, and Z is oxygen or ???NR6 where R6 is hydrogen or an alkyl group, the dispersant being reacted with epoxyacrylate h