公开(公告)号：US10441925B2

公开(公告)日：2019-10-15

申请号：US15502896

申请日：2015-07-30

Applicant: BASF SE

Inventor： Martin Weber ,  Nicole Janssen ,  Hartwig Voss ,  Jacek Malisz ,  Martin Heijnen ,  Edoardo Menozzi

IPC: B01D71/80 ,  C08G75/23 ,  C08J3/00 ,  C02F1/44 ,  A23L2/74 ,  B01D67/00 ,  B01D71/52 ,  B01D71/68 ,  C02F103/08

Abstract: Process for making a membrane M comprising the following steps: a) preparing a copolymer C, wherein said copolymer C comprises blocks of at least one polyarylene ether A and blocks of polyalkylene oxide PAO, wherein the content of polyethyleneoxide in copolymer C is 30 to 90% by weight and wherein copolymer C is prepared in a solvent L to yield solution S; b) providing a dope solution D comprising at least one polymer P; c) mixing solution S and dope solution D; d) preparing a membrane by bringing the mixture of solution S and dope solution D into contact with at least one coagulating agent.

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.