废聚酯制备对苯二甲酸二异辛酯工艺条件的研究  

Study on the Technological Conditions for the Synthesis of Diisooctyl Terephthalate from Polyester Waste

作　　者：李蕾[1] 关瑞彪 张玉文 Li Lei;Guan Ruibiao;Zhang Yuwen(Xuzhou College of Technology Chemical Engineering Institute,Xuzhou 221000,China)

机构地区：[1]徐州工业职业技术学院化学工程学院

出　　处：《山东化工》2019年第16期62-63,66,共3页Shandong Chemical Industry

基　　金：由聚酯废料制备对苯二甲酸二异辛酯工艺的研究(XGY2018A003)

摘　　要：对苯二甲酸二异辛酯(DOTP)是一种环保、安全无毒的增塑剂。本实验采用聚酯废料与过量异辛醇采取醇解酯交换法制备对苯二甲酸二异辛酯(DOTP)的方法,利用在不同反应条件下产品的产率,综合产品的pH值、粘度、颜色,确定最佳的反应条件。当反应条件:聚酯废料与异辛醇物质的量比1∶4,催化剂采用原料量的0.4%的醋酸锌与钛酸四丁酯1∶1混合催化剂,反应温度为200~210℃,反应时间为7h时,对苯二甲酸二异辛酯(DOTP)收率最高为86%。Diisooctyl terephthalate (DOTP) is an environmentally friendly, safe and non-toxic plasticizer. In this experiment, polyester waste and excess isooctyl alcohol were used to prepare diisooctyl terephthalate (DOTP) by the method of alcohol hydrolysis transesterification. The optimum reaction conditions were determined by taking advantage of the product yield under different reaction conditions, combining the pH value, viscosity and color of the product. When reaction conditions:polyester waste with isooctyl alcohol mole ratio of 1∶4, catalyst USES 0.4% of the amount of raw material of zinc acetate and tetrabutyl titanate 1:1 mixed catalyst, the reaction temperature is 200~210 ℃, the reaction time is 7 h, two diisooctyl terephthalate (DOTP) yield up to 86%.

关 键 词：废聚酯 酯交换 对苯二甲酸二异辛酯(DOTP) 催化剂 

分 类 号：TQ245.24[化学工程—有机化工] TQ414