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
出 处:《精细化工原料及中间体》2004年第5期26-27,32,共3页Fine Chemical Industrial Raw Materials & Intermediates
摘 要:本文介绍了以4-氯代苯酐为原料,采用1,2,4-三氯苯作溶剂制备二苯醚四甲酸二酐(ODPA),并讨论了不同催化剂及其加量、反应时间和提纯工艺对ODPA产率的影响。In this paper, the synthesis methods of tetracarboxydiphthalic ether dianhydride (ODPA)was introduced, which was prepared with 4-chlorophthalic anhydride. And 1,2,4-trichlorobenzene acted as solvent. At the same time, the effect factors to the yield of ODPA were discussed, which concluded different kinds of catalyst and their amount, reacting time and purification technics.
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:216.73.216.49