Intermolecular interactions detergent + dispersant

B) Medium intermolecular interactions detergent-dispersant. In hydrocarbon formulations, the principal interaction between ashless dispersants (e.g., succinimide) and metallic detergents (e.g., phenate, salicylate and sulfonate) may be ascribed to the acid-base interactions between the anion of metallic detergents and the amino group of the succinimide as shown in Fig. 2.10. 

Fig. 2.10. Intermolecular interactions between dispersant (succinimide) and detergent (salicylate)...

Some investigators have shown that mixtures of succinimides, sulfonates, phenolates and salicylates produce acid-base complexes which tend to form aggregations (Inoue and Watanabe, 1983 Vipper and Watanabe, 1981). The intermolecular interactions between ashless dispersants (PIBS) and metallic detergents were found to decline in the following order ... 

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