甲基丙烯酸混合酯-醋酸乙烯酯聚合物的合成与降凝性能研究

SYNTHESIS AND POUR POINT DEPRESSING PERFORMANCE OF METHACRYLATE ESTER-VINYL ACETATE POLYMER

实验以甲基丙烯酸、混合醇及醋酸乙烯酯为原料,经过先酯化后聚合,合成了一种新型的甲基丙烯酸混合酯-醋酸乙烯酯聚合物降凝剂,研究了其降凝性能。结果表明:在n(甲基丙烯酸):n(混合醇)=1:1、w(对甲苯磺酸)=2%、w(二甲苯)=60%条件下酯化反应2 h,然后在w(醋酸乙烯酯)=30%和w(过氧化苯甲酰)=1.5%、80℃反应5 h条件下制备的降凝剂具有最佳的降凝效果。当降凝剂的添加量为0.5%时,可使沈阳长城润滑油有限公司生产的150SN润滑油基础油凝点降低17℃。

The synthesis and pour point depressing performance of methacrylate ester-vinyl acetate polymer was studied. The optimized pour point depressing performance of the depressant was obtained by adding w （ vinyl acetate ） = 3 0 % and w （ BPO ） = 1. 5 % to the prepared compound for 5 h at 8 0 ℃,which was prepared by mixing n（methacrylic acid） ： n（mixed alcohol）= 1 ： 1, w（p-toluenesulfonic acid）=2% and w（dimethylbenzene）=60% for 2 ho SP of the 150SN lubricant （Shenyang Greatwall Lubricant Group Co. ） was lowered by 17 ℃ with 0.5% （w） of the depressant.