公开(公告)号：US20180327345A1

公开(公告)日：2018-11-15

申请号：US15775938

申请日：2016-11-16

Applicant: BASF SE

Inventor： Marek PAZICKY ,  Rocco PACIELLO ,  David LINDER ,  Mathieu BLANCHOT ,  Wolfgang FISCHER

IPC: C07C67/327 ,  C07C67/03

CPC classification number: C07C67/327 ,  C07C51/377 ,  C07C67/03 ,  C08G63/06 ,  C08G63/823 ,  C07C69/675 ,  C07C69/54 ,  C07C57/04

Abstract: 3-Hydroxypropionic acid esters are obtained by reacting ethylene oxide with carbon monoxide in the presence of a cobalt catalyst, wherein poly-3-hydroxypropionate is obtained; and transesterification of the poly-3-hydroxypropionate with an alcohol in the presence of a transesterification catalyst, wherein the 3-hydroxypropionic acid ester is obtained. The transesterification catalyst is a compound of the formula MLx, where M is a metal of main groups 2, 3 or 4 or transition groups 3 to 8 of the Periodic Table of the Elements, L is a ligand which is bonded directly to M via a C, an O, a P, an S and/or an N atom, and x is an integer from 2 to 6.