College of Chemical and Pharmaceutical Engineering, Shandong First Medical University, Tai'an, 271000, Shandong, ChinaTaian Huagui Pharmaceutical Technology Development Co. LTD, Tai'an, 271000, Shandong, China
刊名
Speciality Petrochemicals
年份
2020
卷号
Vol.37 No.3
页码
60
ISSN
1003-9384
摘要
Sodium ethylene glycol isophthalate-5-sulfonate was synthesized from wastewater concentrate of dimethyl isophthalate-5-sodium sulfonate process by transesterification and esterification with ethylene glycol . Using three-component catalyst and sodium acetate as antiether agent, the optimum reaction conditions were determined by orthogonal test design: the dosage of calcium acetate, dibutyl tin oxide, cobalt acetate and sodium acetate were 0.25%, 0.12%, 0.06% and 0.04% respectively. The mass r...更多
Sodium ethylene glycol isophthalate-5-sulfonate was synthesized from wastewater concentrate of dimethyl isophthalate-5-sodium sulfonate process by transesterification and esterification with ethylene glycol . Using three-component catalyst and sodium acetate as antiether agent, the optimum reaction conditions were determined by orthogonal test design: the dosage of calcium acetate, dibutyl tin oxide, cobalt acetate and sodium acetate were 0.25%, 0.12%, 0.06% and 0.04% respectively. The mass ratio of SIPM wastewater concentrate to EG is 1:1.50, the first stage reaction temperature is 170 ℃, the second stage reaction temperature is 185 ℃, and the reaction time is 2.0 h. The SIPE solution with good appearance, high purity and low impurity content was obtained, the yield of the product was 77.45%. The content, saponification value and acid value of the synthesized SIPE solution reached the standard one year later, and the stability was good.收起
