第 35 卷第 1 期 | | Vol. 35 No. 1 | 2005 年 2 月 | Feb 2005 |
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所属栏目:其它
聚丙烯透明改性剂的合成及分离纯化研究 |
禹练英(湖南化工职业技术学院; 湖南株洲) |
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%。 |
关键词:聚丙烯(PP); 增透剂; 二亚苄基山梨糖醇(DBS) |
中图分类号:TQ223.1 文献标识码:A 文章编号:1009-9212(2005)01-0047-03 |
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Synthesis and Separate-purification of Clarity Modifier of Polypropylene |
YU Lian-ying (Hunan Chemical Industry Professional Technology College; Zhuzhou 412004; China) |
Abstract: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%. |
Key words:polypropylene; antireflectical agent; dibenzylidene sorbitol |
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收稿日期:2004-09-10
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