脲基氨基甲酸酯化合物的合成及应用研究  

The Synthesis and Applied-research of Ureido-urethane

作　　者：解世文[1] 董丽美[2] 杨礼河[2] 

机构地区：[1]天津大学内燃机研究所,天津300072 [2]天津大学应用化学系,天津300072

出　　处：《高等学校化学学报》1998年第1期80-82,共3页Chemical Journal of Chinese Universities

基　　金：中国石油化学工业总公司科技基金

摘　　要：Due to high temperature and acid substance in exhaust, gasoline usually produces deposits on the chamber and gasoline jet of intake air system in engines of a car, carbonating on the jet, even blocking the jet, make engine fail to start and run. The methods of selecting optimum engine design have less effect on reducing deposits and carbonating than does that of adding detergent-dispersant additive into gasoline. A new compound──ureido-urethane is synthesized by reacting di-iso-cyanate with alcohols and amines. After experiments of selecting optimum reaction condition, testing solubility and percentage of relative oxidation,and evaluating in the PFI imitating device. The results show that the detergent-dispersant property of that compound is superior to the new product of USA(paradyne 748) and compound produced in Shanghai.Due to high temperature and acid substance in exhaust, gasoline usually produces deposits on the chamber and gasoline jet of intake air system in engines of a car, carbonating on the jet, even blocking the jet, make engine fail to start and run. The methods of selecting optimum engine design have less effect on reducing deposits and carbonating than does that of adding detergent-dispersant additive into gasoline. A new compound──ureido-urethane is synthesized by reacting di-iso-cyanate with alcohols and amines. After experiments of selecting optimum reaction condition, testing solubility and percentage of relative oxidation,and evaluating in the PFI imitating device. The results show that the detergent-dispersant property of that compound is superior to the new product of USA(paradyne 748) and compound produced in Shanghai.

关 键 词：脲基 氨基 甲酸酯 汽油 清净分散剂 

分 类 号：U473.5[机械工程—车辆工程]