PVC光稳定剂二苯甲酰甲烷合成工艺的研究  

Study on synthetic process of PVC light stabilizer dibenzoyl methane

作　　者：郑兴荣[1] 

机构地区：[1]潍坊科技学院,山东寿光262700

出　　处：《精细与专用化学品》2011年第7期32-34,共3页Fine and Specialty Chemicals

摘　　要：本课题开发了在碱性催化剂条件下,由苯乙酮和苯甲酸甲酯进行反应,得到二苯甲酰甲烷,再进行蒸馏、萃取、洁净结晶,得到高纯度的二苯甲酰甲烷的生产新工艺。从苯乙酮、苯甲酸甲酯反应生成二苯甲酰甲烷的机理出发,较为详细地研究了原料配比、催化剂用量、反应时间以及温度等对二苯甲酰甲烷收率的影响,确定了较为适宜的催化剂用量和工艺条件。实验采用了NaOH作为催化剂、二甲苯作为溶剂,探索在适合的温度下合成二苯甲酰甲烷。通过正交实验、平行实验找出最佳的工艺条件,并测得了该产品的转化率。Dibenzoyl methane was synthesized by reaction with acetophenone and methyl benzoate using alkaline catalyst,getting high purity dibenzoyl methane（DBM） product by further distillation,extraction,clean crystal. Effect of the material ratio,the amount of catalyst,the reaction time and temperature on dibenzoyl methane （DBM） yield was studied from reaction mechanism,to determine the amount of catalyst and process conditions. The optimum conditions were determined by orthogonal experiments and the parallel process.

关 键 词：二苯甲酰甲烷 减压蒸馏 Β-二酮 

分 类 号：TQ245.2[化学工程—有机化工]