摘要
对 2 ,6-二氯苯胺的生产工艺路线进行了比较 ,提出以苯胺和尿素为起始原料 ,经缩合 ,得二苯脲 ;二苯脲经磺化、氯化、水解脱碳酰基、再水解脱磺酸基 ,得 2 ,6-二氯苯胺 ,总收率 60 % ,其纯度达99%以上 .与传统工艺相比 ,2 ,6-二氯苯胺合成成本大幅下降 .
Based on the comparison of the various producing processes of 2,6-dichloroaniline, a new method for the preparation of 2,6-dichloroaniline is put forward in this paper Aniline,as the raw material,and urea are combined to produce N,N′-diphenylurea N,N′-diphenylurea is sulfonated by concentrated sulfuric acid,then chlorinated by Cl 2,after hydrolytic desulfonation, 2,6-dichloroaniline is obtained with overall yield of 60% and its purity was enhanced up to 99% Compared with the traditional process,the cost of preparation of 2,6-dichloroaniline has been greatly reduced.
出处
《郑州大学学报（工学版）》
CAS
2002年第4期95-97,共3页
Journal of Zhengzhou University（Engineering Science）
