检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:房强[1] 雷勇[1] 江春伟 郝建军[1] 曾敏[1] 周密 江璐霞[1]
出 处:《四川联合大学学报(工程科学版)》1998年第5期89-95,共7页
基 金:国家教委军工配套材料项目
摘 要:本文分别用四丁基溴化铵和苄基三乙基氯化铵作相转移催化剂.氢氧化钠水溶液作缚酸剂,研究了溶剂种类,相转移催化剂种类和用量。Diallyl ether of bisphenol A with higher yield was synthesized in three solvents (chloroform, toluene and chlorobenzene) by using phase transfer catalysts (PTC) tetrabutyl ammonium bromide and benzyl triethyl ammonium chloride. The influence of kind of solvents, the kind and amounts of PTC, the reactant ratio and the reaction time on yield was investigated.The results showed: (1) chloroform - tetrabutyl ammonium bromide and toluene - benzyl triethyl ammonium chloride are better reaction systems; (2) the best molar ratio of tetrabutyl ammonium bromide to bisphenol A is 0. 12∶ 1 in chloroform and the ratio of benzyl triethyl ammonium chloride to bisphenol A is 0. 22∶ 1 in toluene; (3 ) the best molar ratio of allyl choride to bispheno A is 4∶ 1 and 5∶ 1 in chlorofrm - tetrabutyl ammonium bromide and toluene - benzyl triethyl ammonium chloride, respectively; (4 ) the reaction time is 4h in both systems (chloroform and toluene).
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.91