摘要
研究N,N′-二邻甲苯基硫脲的合成工艺。以邻甲苯胺、二硫化碳为原料,水为溶剂,加入催化剂A,在一定的温度下反应生成N,N′-二邻甲苯基硫脲,确定的最佳合成工艺条件为:邻甲苯胺/二硫化碳物质的量比为1/1.5,催化剂A/邻甲苯胺质量比为3.33/1000;反应温度为第1阶段48~50℃,第2阶段60~65℃,第3阶段95~100℃;反应时间为第1阶段3 h,第2阶段8 h,第3阶段6 h。
The synthetic process of di-o-tolylthiourea was studied.Di-o-tolylthiourea was synthesized at a certain temperature with o-toluidine and carbon disulfide as raw materials,water as solvent and catalyst A.The optimum synthesis conditions were as follows:the molar ration of o-toluidine/carbon disulfide was 1/1.5,the mass ratio of catalyst A/o-toluidine was 3.33/1000;the reaction temperature was set at 48~50℃in the first stage,60~65℃in the second stage,and 95~100℃in the third stage;the reaction time was 3 hours in the first stage,8 hours in the second stage,and 6 hours in the third stage.
作者
赵锴锴
杜学军
李振兴
王艳利
ZHAO Kaikai;DU Xuejun;LI Zhenxing;WANG Yanli(Hebi Lianhao New Materials Co.,Ltd,Hebi 458030,China)
出处
《橡胶科技》
2023年第2期90-93,共4页
Rubber Science and Technology
