AMV及其醇解、胺解型柴油降凝剂的合成与性能研究

该文主要介绍α-甲基丙烯酸高级酯-马来酸酐-醋酸乙烯酯(AMV)三元共聚物及其醇解、胺解型柴油降凝剂的合成、表征以及降凝助滤效果。实验表明,在n(α-甲基丙烯酸十八酯)∶n(马来酸酐)∶n(醋酸乙烯酯)=4∶1∶2,聚合温度85℃,聚合时间5h,引发剂用量1.2%(质量分数,下同)的条件下,合成的AMV三元共聚物在添加量为0.1%(质量分数,下同)时,分别将中国石油兰州石油化工公司生产的3种柴油的凝点降低10、14、9℃,冷滤点降低1、3、2℃;在对三元共聚物进行醇解、胺解得到一系列的醇解、胺解物中,十八胺胺解物的添加量为0.1%时,分别可将上述3种柴油的凝点降低10、16、11℃,冷滤点降低2、5、3℃。

Study on the synthesis, alcoholysis and aminolysis of diesel flow improver AMV

The synthesis,alcoholysis and aminolysis of α-methyl methacrylate ester-maleic anhydrid-vinyl acetate(AMV) was described and characterized in this work.The solidifying point(SP) and cold filter plugging point(CFPP) depression effects of the AMV terpolymer and its alcoholysis and aminolysis products were determined.The terpolymer were characterized by IR.The AMV terpolymer was synthesized at the molar ratio(4:1:2) of α-methyl methacrylate ester,maleic anhydride,vinyl acetate with 1.2% initiator at 85 ℃ for 5 h.With 0.1% additive dosage,the AMV terpolymer can reduce the SP and CFPP of three kinds of diesel oils(obtained from Petro China Lanzhou Petrochemical Company) by 10,14,9 ℃ and 1,3,2 ℃,respectively.The alcoholysis and aminolysis of the AMV polymer were also carried out.With 0.1% additive dosage,the aminolysis products through octadecylamine could reduce the SP and CFPP of diesel oils by 10,16,11 ℃ and 2,5,3 ℃,respectively.