耐寒增塑剂尼龙酸二异丁酯的合成研究  

Synthesis of Cold-resisfant Plasticizer of Diisobutyl Nylonic Acid Ester

作　　者：许京伟 孙玉华 刘小兵 

机构地区：[1]浙江建业化工股份有限公司,浙江建德331604

出　　处：《广州化工》2012年第14期105-106,146,共3页GuangZhou Chemical Industry

摘　　要：尼龙酸在质子酸催化下,与异丁醇直接酯化,减压蒸馏制得合格的尼龙酸二异丁酯。研究催化剂用量、反应原料配比,反应温度和时间及蒸馏压力等因素对其制备产品的影响。其最佳的工艺条件为①酯化反应:催化剂用量为反应物总质量的0.35%;n(异丁醇)∶n(尼龙酸)=2.5∶1;在搅拌条件下,反应温度控制在145～155℃,反应时间4.0 h;②减压蒸馏:蒸馏压力≤5.0 kPa。Proton acid as a catalyst, nylon acid and isobutanol through esterification reaction and vacuum distillation, the qualified diisobutyl nylonic acid ester was prepared. By analyzing the amount of catalyst, the reaction ratio of react- ants, reaction temperature and time, distillation pressure and other factors on the preparation of products, the best process conditions were that the catalyst was 0.35% of the reactants total mass, n（isobutanol） ： n（nylon acid） =2.5 ： 1; under stirring, the reaction temperature was controlled at 145 - 155℃, and the reaction time was 4 h in the esterification reac- tion and distillation pressure≤5.0 kPa in vacuum distillation.

关 键 词：尼龙酸 尼龙酸二异丁酯 酯化反应 减压蒸馏 

分 类 号：TQ414.4[化学工程]