Provided are a borosuccinimide compound obtained through reaction of (a) a succinic acid/anhydride substituted with an alkyl or alkenyl group having a number-average molecular weight of from 200 to 5,000, (b) a polyalkylene-polyamine of which at least 5 mol% has a terminal cyclic structure, and (c) a boron compound; and a succinimide compound obtained through reaction of (A) a succinic acid/anhydride substituted with an alkyl or alkenyl group having a molecular weight of from 200 to 5,000, with (D) a hydrocarbon-substituted polyalkylene-polyamine. These compounds are stable even at high temperatures and have good high-temperature detergency, and they are useful for ashless detergent dispersants having the ability to disperse fine particles. Also provided are a mixture of any of these compounds and a specific ester derivative; a lubricant additive and a fuel oil additive comprising the mixture as the essential ingredient; and a lubricant and a fuel oil composition containing the additive.
本发明提供了一种琥珀
酰亚胺硼化合物,该化合物通过(A)被平均分子量为200至5000的烷基或烯基取代的
琥珀酸/酸酐,(B)至少5 mol%具有末端环状结构的聚亚烷基-聚胺,以及(C)
硼化合物反应获得;以及一种琥珀
酰亚胺化合物,它是通过(A)被分子量为 200 至 5000 的烷基或烯基取代的
琥珀酸/酐与(D)烃取代的聚亚烷基
多胺反应而得。这些化合物即使在高温下也很稳定,具有良好的高温去污力,可用于具有分散细颗粒能力的无灰洗涤剂分散剂。此外,还提供了上述任一化合物与特定酯衍
生物的混合物;以该混合物为主要成分的润滑油添加剂和燃料油添加剂;以及含有该添加剂的润滑油和燃料油组合物。