QIU Ming-yan~(1,2),ZHANG Tian-yong~1,SHAO Hong-fei~1,YUAN Zhong-fei~3 (1.School of Chemical Engineering,Tianjin University,Tianjin 300072,China; 2.Department of Chemical Engineering,An Yang Institute of Technology,Henan Anyang 455000,China; 3.Nantong Baisheng Chemical Co. Ltd.,Jiangsu Nantong 226236,China)
(1,2),ZHANG Tian-yong~1,SHAO Hong-fei~1,YUAN Zhong-fei~3 (1.School of Chemical Engineering,Tianjin University,Tianjin 300072,China; 2.Department of Chemical Engineering,An Yang Institute of Technology,Henan Anyang 455000,China; 3.Nantong Baisheng Chemical Co. Ltd.,Jiangsu Nantong 226236,China
Abstract��
2,4��-Dihydroxydiphenylsulfone(2,4��-BPS) was prepared from phenol and H_2SO_4.Mesitylene and phosphorous acid were the better solvent and catalyst,respectively.The other optimum technologies for synthesis and purification of 2,4��-BPS were also obtained.The total yield of 2,4��-BPS was 18.8%(based on H_2SO_4 used) with a purity beyond 95%.
2005, Vol. 22 
