【摘要】 以聚乙二醇200、柠檬酸为原料,设计、制备了CPC爪状物小分子;制备的CPC进一步与带有功能化基团的硬脂酸、十八醇接枝,合成了用作低温流动改进剂的新型多元酯类CPC-SO爪形大分子。用正交实验设计法和极差分析法研究了单体配比、催化剂用量、溶剂用量和酯化反应时间对目的产物助滤效果的影响。红外光谱对产物的分子结构进行了表征,表明制备产物的分子结构与目标产物相符。将爪形大分子CPC-SO按600μg/g的加剂量添加到沈阳石蜡化工有限公司生产的轻柴油中,0#柴油的冷滤点最大可降低5℃,柴油的十六烷值不变。更多还原

【Abstract】 Citric acid-polyethylene glycol-citric acid(CPC) claw-small molecule was synthesized by polyethylene glycol 200 and citric acid.The obtained CPC further was reacted with stearic acid and octadecyl alcohol by esterification to form a creative citric acid-polyethylene glycol-citric acid-stearic acid-octadecyl alcohol(CPC-SO) claw-large molecule which was used as low-temperature flow improver.The effects of the monomer ratio,the catalyzer dosage,solvent dosage and reaction time on the pour-point depression of CPC-SO were studied with the orthogonal design and error analysis.The molecular structure of the product has been characterized by means of IR,the validity of the molecular structure was proved to match with the designing target molecule.When CPC-SO content in light diesel oil of Shenyang Paraffin Wax Chemical Corporation is 600 μg/g,the cold filter plugging point of the light diesel oil can be lowered for 5 ℃.更多还原