六氟丙烯齐聚反应的研究  

Study on the oligomerization of hexafluoropropene

作　　者：武宏科[1] 史鸿鑫[1] 项斌[1] 项菊萍[1] 姜一飞[1] 周海安[1] 

机构地区：[1]浙江工业大学绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《浙江工业大学学报》2005年第2期162-164,169,共4页Journal of Zhejiang University of Technology

摘　　要：六氟丙烯通过气相法和液相法齐聚,得到六氟丙烯二聚物和三聚物的混合物,齐聚产物可以进一步衍生出许多氟碳表面活性剂.对六氟丙烯的气相齐聚反应和液相齐聚反应的特点做了分析和比较.制备了季磷盐催化剂A,采用DMA为溶剂,研究了六氟丙烯液相齐聚的工艺条件.催化剂A对合成六氟丙烯二聚体有很高选择性,其用量对齐聚反应收率有影响,当催化剂用量足够大时,再增加催化剂的量作用不大;反应时间60min时收率最高,反应时间过短或过长使反应收率下降;反应温度也影响反应收率,在50℃时二聚物产率较高.结论:在DMA中以催化剂A催化六氟丙烯齐聚主要得到二聚物,在较佳的工艺条件下,二聚物的收率达到97%.Hexafluoropropene oligomerization can produce a mixture of dimmers and trimers by gas phase or liquid phase methods. The oligomers could be translated to many fluorine-carbon surfactants. Different advantages and disadvantages of the two methods had been compared. A quaternary alkylphosphonium salt (Cat. A) was prepared. It was studied that hexafluoropropene oligomerized in the presence of Cat .A in dimethyl acetamide (DMA). Cat. A was high selective for dimmers of hexafluoropropene. The amount of Cat. A used effected the reaction. The best yield of dimmers was gotten after reacting 60 min. Shortening or elongating reacting time would reduce dimmers yield. Reacting at 50 ℃ could give better yield. It is conclude that dimer was mainly product when hexafluoropropene oligomerize with Cat. A in DMA, and the yield could reach to 97% in a technique condition.

关 键 词：六氟丙烯 齐聚反应 氟碳表面活性剂 反应收率 工艺条件 反应时间 催化剂用量 二聚物 高选择性 反应温度 丙烯齐聚 DMA 液相法 气相法 混合物 三聚物 季磷盐 二聚体 产物 溶剂 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业] O632.12[理学—高分子化学]