聚丙烯透明改性剂的合成及分离纯化研究  

Synthesis and Separate-purification of Clarity Modifier of Polypropylene

作　　者：禹练英[1] 

机构地区：[1]湖南化工职业技术学院,湖南株洲412004

出　　处：《精细化工中间体》2005年第1期47-49,共3页Fine Chemical Intermediates

摘　　要：利用正交试验法对DBS的合成及纯化条件进行了优化,得出了优惠工艺条件:原料中苯甲醛与山梨醇摩尔比2.2∶1.0,环己烷与甲醇体积比为 70∶30,搅拌速率和反应时间分别是450 rpm和5 h,在此条件下合成DBS,并用环己烷/丙酮混合溶剂提纯,可以得到99%DBS,其收率达到82.9%。Dibenzylidene sorbitol( DBS) was synthesized and puried using orthogonal experiment method ,The optimum condition as follows: the mole proportion of benzaldehyde and sorbitol is 2.2∶1.0, the volume proportion of cyclohexane and methanol is 70∶30, and rate of mix round 450rpm,reaction time 5 h, in this condition, DBS was purified in the mixture of cyclohexane and propanone, and highpurity DBS was gotten, the recovery rate was 82.9%.

关 键 词：聚丙烯(PP) 增透剂 二亚苄基山梨糖醇(DBS) 

分 类 号：TQ223.1[化学工程—有机化工]