Additives useful as dispersants and/or detergents in lubricating oils, gasolines, marine crankcase oils and hydraulic oils are polyamino alkenyl or alkyl succinimides which have been modified to contain carbamate functionalities by converting one or more of the amino nitrogens to a hydrocarbyl carbamate, hydroxyhydrocarbyl carbamate or hydroxy poly(oxyalkylene) carbamate group. These additives can be prepared by reacting a polyamino alkenyl or alkyl succinimide with a cyclic carbonate, or a linear mono-or poly-carbonate, or a chloroformate.
在润滑油、汽油、船用曲轴箱油和液压油中用作分散剂和/或清洁剂的添加剂是聚
氨基烯基或烷基琥珀
酰亚胺,这些添加剂通过将一个或多个
氨基硝基转化为
氨基甲酸烃基、羟基
氨基甲酸烃基或羟基聚(氧烷基)
氨基甲酸烃基,从而改性为含有
氨基甲酸酯官能团。 这些添加剂可通过将聚
氨基烯基或烷基琥珀
酰亚胺与环状
碳酸酯或线性单
碳酸酯或多
碳酸酯或
氯甲酸酯反应来制备。