新一代聚丙烯成核剂的合成及应用  

Synthesis and Application of New-Generation Polypropylene Nucleation Agent

作　　者：赵光辉[1] 关旭[1] 

机构地区：[1]大庆化工研究中心,黑龙江大庆163714

出　　处：《现代塑料加工应用》2011年第5期33-35,共3页Modern Plastics Processing and Applications

摘　　要：介绍了二(3,4-二甲基二苄叉)山梨糖醇(DMDBS)的合成路线和作用机理,并以山梨糖醇和3,4-二甲基苯甲醛为原料,在固体酸的作用下,不用分离水就能直接合成出新一代聚丙烯透明成核剂DMDBS。结果表明,在醇醛物质的量比2.1、催化剂加量4.5%(质量分数,以醇醛质量总和为基准,下同)、反应温度25℃、反应时间5h、溶剂加量为300%的最佳反应条件下,DMDBS的收率大于85%,纯度达到了98%以上。Synthetic route and mechanism of di-（3,4-dimethyl benzyl） sorbitol（DMDBS） were described.A new generation of polypropylene nucleation agent（DMDBS） was synthesized with sorbitol and 3,4-dimethyl benzaldehyde as raw materials,solid acid as catalyst and without separation of water.The results show that the yield is more than 85%, purity is more than 98%while the molar ratio of 3,4-dimethyl benzaldehyd to sorbitol is 2.1,the amount of catalyst is 4.5%,the reaction temperature is 25℃,the reaction time is 5 h,the amount of solvent is 300%.

关 键 词：聚丙烯 成核剂 山梨醇 3 4-二甲基苯甲醛 合成 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]