公开(公告)号：EP1060156A1

公开(公告)日：2000-12-20

申请号：EP99908325.6

申请日：1999-03-04

申请人： Cognis Corporation

发明人： ELSASSER, A., Fred ,  BLEWETT, C., William ,  WHITE, Charles, M.

IPC分类号： C07C35/02 ,  C07C27/02 ,  C07C27/04 ,  C07C29/12 ,  C11C3/00

CPC分类号： C11C3/003 ,  C07C29/149 ,  C07C67/56 ,  C07C69/58 ,  C07C69/24 ,  C07C31/125

摘要： Sulfur and soap contaminants are removed from carboxylic acid esters by a process comprising the steps of: (1) contacting a carboxylic acid ester with an aqueous base at a temperature of from about 225 °F to about 280 °F while removing water to form a dry, crude ester; (2) contacting the dry, crude ester with an absorbent selected from the group consisting of silica gel, hydro-silica gel and mixtures thereof; (3) separating the absorbent from the ester.