公开(公告)号：US20200010618A1

公开(公告)日：2020-01-09

申请号：US16481566

申请日：2018-01-30

Applicant: BASF SE

Inventor： Hartwig Voss ,  Felicitas Guth ,  Emiel Jan Kappert ,  Pedro Sa Gomes

IPC: C08G65/30 ,  B01D61/14 ,  B01D15/34 ,  B01D15/18

Abstract: Process for providing purified polyether block copolymers comprising polyoxyethylene (PEO) and polyoxypropylene (PPO) moieties wherein the purified product is obtained by an ultrafiltration step of a solution of the polyether block copolymers and wherein the block copolymers are depleted in lower molecular impurities.

公开(公告)号：US20180353875A1

公开(公告)日：2018-12-13

申请号：US16060043

申请日：2016-12-12

Applicant: BASF SE

Inventor： Pedro Sa Gomes ,  Bastiaan Bram Pieter Staal ,  Felicitas Guth ,  Nigel A. Langley

IPC: B01D15/34 ,  B01D15/18 ,  C08G65/30 ,  C08G65/08

CPC classification number: B01D15/34 ,  B01D15/1807 ,  B01D15/1821 ,  B01D15/1871 ,  B01D15/1892 ,  C08G65/08 ,  C08G65/30 ,  C08G2650/58

Abstract: A process for purification of polyether block copolymers comprising polyoxyethylene and polyoxypropylene moieties using sequential multi-column size exclusion chromatography apparatus operated as a counter current moving bed wherein a process cycle comprises the steps of.