摘要
介绍了以异辛醇和邻苯二甲酸酐(苯酐)为原料,合成增塑剂邻苯二甲酸二辛酯(DOP)的方法,分别以氧化铝、氧化锌、乙酸锌、红色氧化铅、辛酸亚锡、对甲苯磺酸6种单体催化剂及其以一定比例相互复配的6种复配催化剂合成DOP,考察催化剂对合成DOP的影响,结果表明,氧化铝与辛酸亚锡以1∶1比例复配催化剂为最佳催化剂。考察了工艺条件对合成DOP的影响,结果表明,在异辛醇与苯酐摩尔比3∶1,氧化铝/辛酸亚锡复配催化剂用量分别占反应物总量的0.2%,反应温度230℃,反应时间2.5h的最佳工艺条件下,产品终点酸值0.494mgKOH/g,反应物转化率达99.59%。
Dioctyl phthalate as plasticizer was synthesized from octanol and phthalic anhydride using aluminium oxide,zince acetate, red lead oxide, stannous octoate, paratuluene sulfonic acid or two - component mixtures of the above compounds at certain ratio as catalysts. The effects of catalysts on synthesis of dioctyl phthalate were examined. The result showed the best catalyst was the mixture of aluminium oxide/stannous octaote at mass ratio of 1 ： 1. The effects of process conditions on synthesis of DOP were examined. The product synthesized under the optimum conditions as follows had final acid value of 0.494 mgKOH/g, and conversion of reatants up to 99.59 %, molar ratio of isooctanol to phthalic anhydride 3 ： 1, the dosage of both aluminium oxide and stannous octoate as catalyst 0.2 % （based on the total mass of reactants）,reaction time 2.5 hours
出处
《精细石油化工进展》
CAS
2006年第11期19-22,共4页
Advances in Fine Petrochemicals
关键词
邻苯二甲酸二辛酯
氧化铝
辛酸亚锡
增塑剂
性能
dioctyl phthalate, aluminium oxide, stannous octoate, plasticizer, performance
