Polymeric mannich additives

摘要

An ashless dispersant comprising the reaction product of the following reactants: 1) at least one Mannich base condensation product of a hydrocarbyl hydroxy aromatic compound with an aldehyde and an amine, with 2) at least one poly( alpha -olefin-unsaturated acidic reagent); and optionally reacting the product of reactants 1) and 2) above with amines, alcohols, amino alcohols, or mixtures thereof; and optionally post-treating the above reaction products with at least one member selected from organic or inorganic phosphorus compounds or any partial or total sulfur analogs thereof, boronating agents and acylating agents.