利用偏酐残渣合成苯多酸酯类增塑剂的高附加值应用研究  

High-value Added Application of Synthesizing Benzoic Acid Ester Plasticizers from Residual Anhydrides

作　　者：朱晓圆 蒋平平 冷炎 周国军 吴晓明 蒋国强 Zhu Xiaoyuan;Jiang Pingping;Leng Yan;Zhou Guojun;Wu Xiaoming;Jiang Guoqiang(School of Chemistry and Materials Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China;Nantong Baichuan New Materials Co.,Ltd.,Nantong,Jiangsu 226532,China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]南通百川新材料有限公司,江苏南通226532

出　　处：《塑料助剂》2024年第1期7-13,共7页Plastics Additives

摘　　要：本文将偏三甲苯制备偏苯三酸酐产生的偏酐重组分(黑渣)与甲醇经过酯化反应得到一系列甲酯,然后对甲酯进行精馏分离,将得到的二甲酯和三甲酯与2-乙基己醇进行酯交换得到二(2-乙基)己酯和(2-乙基)辛酯。进行分离后获得两种偏苯三甲酸三(2-乙基)己酯和一种均苯三甲酸三(2-乙基)己酯。将两种不同的偏苯三甲酸三(2-乙基)己酯和均苯三甲酸三(2-乙基)己酯以及正常合成的偏苯三甲酸三(2-乙基)己酯与常见增塑剂增塑的PVC薄膜的热稳定性、力学性能和相容性等应用性能进行对比。结果表明,偏苯三甲酸三(2-乙基)己酯和均苯三甲酸三(2-乙基)己酯具有良好的增塑性能和热稳定性。This study presents a series of methyl esters obtained by esterification of the heavy component(black residue)of trimellitic anhydrides produced by the preparation of trimellitic anhydrides from 1,2,4-Trimethyl benzene with methanol.The methyl esters are then separated by distillation,and the resulting dimethyl and trimethyl esters are exchanged with 2-Ethylhexanol to bis(2-ethylhexyl)ester and tri(2-ethylhexyl)esters.Two kinds oftris(2-ethylhexyl)benzene-1,2,4-tricarboxylate and one kind of tris(2-ethylhexyl)benzene-1,3,5-tricarboxylate were obtained after separation.The thermal stability,mechanical properties,and compatibility of two different kinds of tris(2-ethylhexyl)benzene-1,2,4-tricarboxylate and one kind of tris(2-ethylhexyl)benzene-1,3,5-tricarboxylate and normally synthesized tris(2-ethylhexyl)benzene-1,2,4-tricarboxylate plasticizer plasticized PVC films were compared.The results indicate that tris(2-ethylhexyl)benzene-1,2,4-tricarboxylate and tris(2-ethylhexyl)benzene-1,3,5-tricarboxylate have good plasticizer properties and thermal stability.

关 键 词：苯多酸酯 聚氯乙烯 环保增塑剂 热稳定性 

分 类 号：TQ414[化学工程]