文献类型：期刊文献

英文题名：Optimized synthesis method of 6-diamino-1,3-benzenediol dihydrochloride using resorcinol by orthodoxy design

作者：Zhang, Min[1]; Tang, Lai-An[1]; Wang, Xiao-Jun[1]; Wu, Ping-Ping[1]; Han, Zhe-Wen[1]

机构：[1] Key Laboratory for Ultrafine Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2006

卷号：22

期号：1

起止页码：60

外文期刊名：Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

收录：EI(收录号：2006199868802)

语种：英文

外文关键词：Hydrolysis - Nitrates - Nitration - Nitric acid - Optimization - Synthesis (chemical)

摘要：The condition of prepare the precursor of poly(p-phenylene benzobisoxazole) (PBO) 4,6-dinitroresorcinol was investigated by orthodoxy experiment method. The optimized synthesis conditions were: for 0.1 mol resorcinol, use 20% oleums which had 0.33 mol free SO3, sulfation temperature is 100°C, sulfation time was 1 h; nitric acid was 0.2 mol, nitration temperature was 20°C-30°C, nitration time was 2 h; the [H3O+] 0.0082 mol/g at the beginning of hydrolyzation reaction, and the hydrolyzation time was 2 h. The producer attained 70%, the purity was nearly 100%.