柠檬酸-1，4-丁二醇-柠檬酸-硬酯酸-十八醇爪形大分子的合成表征与应用  

Synthesis,Characterization and Application in Diesel Oil of Citric Acid-Tetramethylene Glycol-Citric Acid-Stearic Acid-Octadecyl Alcohol Claw-Large Molecule

作　　者：龙小柱[1,2] 王长松[1] 田彦文[2] 马志研[1] 

机构地区：[1]沈阳化工学院化学工程系,辽宁沈阳110142 [2]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《高分子材料科学与工程》2009年第6期24-27,共4页Polymer Materials Science & Engineering

基　　金：辽宁省教育厅科学基金资助项目(2005329)

摘　　要：以1,4-丁二醇、柠檬酸为原料,设计、合成了二羟基四羧酸(CTC)爪状物小分子,再依次与带有功能化基团的硬酯酸、十八醇酯化接枝,合成了柠檬酸-1,4-丁二醇-柠檬酸-硬酯酸-十八醇(CTC-SO)爪形大分子。采用1H-NMR及IR对合成的两种化合物进行了结构表征。结果表明,合成的CTC和CTC-SO与所设计的分子结构相吻合。元素分析确定了CTC和CTC-SO的化学组成依次为C16H22O14和C106H200O15。将CTC-SO按600μg/g的加剂量添加到沈阳石蜡化工有限公司不同标号的轻柴油中,柴油的冷滤点最大可降低7℃。Citric acid-tetramethylene glycol-citric acid （CTC） claw molecule was synthesized by tetramethylene glycol and citric acid. The obtained CTC was further reacted with stearic acid and octadecyl alcohol by esterification to form citric acid-tetramethylene glycol-citric acid-stearic acid-octadecyl alcohol（CTC-SO） claw large-molecule. The structures of CTC and CTC-SO were confirmed by IR and ^1H-NMR. Their compositions were determined by elemental analysis. The molecule formula of CTC and CTC -SO is C16H22O14 and C406H200O15, respectively. CTC - SO is used as low-temperature flow improver of diesel oil. When CTC SO content in light diesel oil is 600 μg/g, the cold filter plugging point（CFPP） of the light diesel oil can be lowed for 7 ℃.

关 键 词：1 4-丁二醇 柠檬酸 爪形大分子 合成 表征 低温流动性改进剂 

分 类 号：TE624.8[石油与天然气工程—油气加工工程]