A novel copolymer of an unsaturated acidic reactant and an atactic vinyl terminated propene polymer (VTPP) and its use in preparation of fuel and lubricant additives is taught. The VTPP has a major amount of polymer chains containing terminal vinyl unsaturation, a number average molecular weight of at least 500, and comprises at least 70 weight per cent propene and 0 to 30 weight per cent of at least one olefin selected from the group consisting of C2 and C4 to C10 olefins. The unsaturated acidic reactant comprises at least one unsaturated C4 to C10 carboxylic or dicarboxylic acid or anhydride. An oil soluble dispersant additive of the invention useful in oleaginous compositions is prepared by contacting the atactic VTPP copolymer with at least one nucleophilic reagent selected from the group consisting of amines, alcohols, metal reactants and mixtures thereof under conditions effective to form adducts of the nucleophilic reagent with the copolymer. The novel dispersants made from the copolymers and terpolymers of the invention can be polymeric succinic ester-amide dispersants, polymeric succinimide dispersants, polymeric succinic amide-triazole dispersants, or polymeric succinic triazole dispersants. Fuel and lubricant compositions containing such additives are a part of the invention.
本发明涉及一种新型不饱和酸性反应剂与无机
乙烯基封端
丙烯聚合物(V
TPP)的共聚物及其在制备燃料和润滑油添加剂中的应用。V
TPP 具有大量含有
乙烯基不饱和末端的聚合物链,平均分子量至少为 500,由至少 70% 的
丙烯和 0-30% 的至少一种烯烃组成,这些烯烃选自由 C2 和 C4 至 C10 烯烃组成的组。不饱和酸性反应剂包括至少一种不饱和 C4 至 C10
羧酸或二
羧酸或酸酐。本发明的油溶性分散剂添加剂可用于含油组合物,其制备方法是将无活性 V
TPP 共聚物与至少一种亲核试剂接触,该亲核试剂选自由胺、醇、
金属反应物及其混合物组成的组,接触条件应能有效地使亲核试剂与共聚物形成加合物。由本发明的共聚物和三元共聚物制成的新型分散剂可以是聚合
琥珀酸酯-酰胺分散剂、聚合琥珀
酰亚胺分散剂、聚合
琥珀酸酰胺-三唑分散剂或聚合
琥珀酸三唑分散剂。含有此类添加剂的燃料和润滑油组合物是本发明的一部分。