Transesterification process using lanthanum compound catalyst
申请人:E. I. du Pont de Nemours and Company
公开号:US05840957A1
公开(公告)日:1998-11-24
This invention relates to an improved transesterification process for the preparation of bis(3-hydroxypropyl) terephthalate monomer from 1,3-propanediol and a dialkyl terephthalate using a lanthanum compound transesterification catalyst.