二聚酸二丁氧基乙酯的合成与增塑性能  

Synthesis and plasticized performance of dimer acid di(2-butoxyethyl) ester

作　　者：谢冰雪[1] 谈继淮 胡兵[1] 李道煜[1] 梅书琴 朱新宝[1,2,3] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037 [2]江苏生物质能源与化学品重点实验室,江苏南京210037 [3]江苏省醇醚工程技术研究中心,江苏江阴214441

出　　处：《化工进展》2016年第12期4014-4019,共6页Chemical Industry and Engineering Progress

基　　金：江苏高校优势学科建设工程项目

摘　　要：以二聚酸和乙二醇丁醚为原料,在催化剂钛酸四丁酯催化作用下,采用直接酯化法工艺合成了二聚酸二丁氧基乙酯。考察了原料配比、催化剂用量、带水剂用量、反应时间等因素对酯化反应的影响。结果表明:当乙二醇丁醚和二聚酸摩尔比为2.5∶1,钛酸四丁酯用量为二聚酸质量的1.0%,带水剂环己烷用量为二聚酸质量的17.5%,反应时间5h时,酯化率可达99.6%。建立了酯化反应表观动力学模型,反应速率方程为:r=9.2×105e–49.1/RTcA。通过FTIR和1H NMR对产物结构进行表征,并将二聚酸二丁氧基乙酯和DOP分别加入到PVC树脂中,通过溶剂铸膜法制成PVC塑料试片,对比其性能,二聚酸二丁氧基乙酯有良好的耐油、耐水抽出及热稳定性,可作为DOP的升级产品使用。A synthesis process of dimer acid di（2-butoxyethyl） ester from dimer acid and ethylene glycol butyl ether was studied.The process was carried out with the catalyst of tetrabutyl titanate and employed the direct esterification method.The effect of the ratio of reactants,dosage of catalyst,dehydrating agent and reaction time was investigated.The result showed that the esterification yield was 99.6%.when the molar ratio of ethylene glycol butyl ether to dimer acid was 2.5∶1,the dosage of catalyst was 1.0% on the basis of the mass of dimer acid,the amount of dehydrating agent was 17.5% on the basis of the mass of dimer acid,and the reaction time was 5h.The apparent kinetics model of esterification was developed,and the equation for reaction rate is：r=9.2×105e–49.1/RTcA.The product was characterized by FTIR and 1H NMR.PVC test pieces was prepared by adding the dimer acid di（2-butoxyethyl） ester and DOP into the PVC resin separately.Dimer acid di（2-butoxyethyl） ester has good oil and water resistance and thermal stability which can be used as DOP upgrade products.

关 键 词：二聚酸 乙二醇丁醚 二聚酸二丁氧基乙酯 动力学 增塑剂 

分 类 号：TQ414.4[化学工程]