AMSA的合成、表征及降凝降冷滤点性能

以丙烯酸酯、马来酸酐、醋酸乙烯酯和α -烯烃为原料 ,甲苯为溶剂 ,过氧化苯甲酰为引发剂 ,聚合为四元共聚物 ,再以对甲苯磺酸为催化剂 ,用高碳胺进行胺解制得AMSA .该剂对胜利油田胜华炼油厂 0 柴油的纯降凝度可达 2 0℃ ,冷凝点降低可达 13℃ ,对东明、濮阳。

Relationship between the Composition of Polymer of n-Alkyl Substituted Acrylate and Vinyl Amine and Their Performance on Pour Point Depression

Polymer of n-alkyl substituted acrylate （PA） with the alkyl side chains C16- 30 were synthesized. Their crystallinity, solubility and effect on pour point depression were studied. Results showed that only carbon atoms located far away from polar groups of PAL pour point depressants participated in crystallization. When the number of carbon atoms that participated in crystallization is about three fourths of the average carbon number of wax in crude, the effect of PA is the best. The molecular weight distribution of PA pour point depressant has little influence on the effect of pour point depression, and the average molecular weight of PA in the range of （ 1.5- 2.2）× 10^4 shows the best effect. The introduction of polar groups into the molecule of PA can improve its performance. However, a too high content of polar groups in PA would cause deterioration, and even lead to loss of PA＇s performance for pour point depression.