公开(公告)号：US20200269191A1

公开(公告)日：2020-08-27

申请号：US16646417

申请日：2018-10-08

Applicant: BASF SE

Inventor： Frank PRISSOK ,  Raymond A NEFF ,  Juergen AHLERS ,  Martin WEBER ,  Oliver GRONWALD

IPC: B01D67/00 ,  C08J5/18 ,  C08J9/26 ,  B01D71/54 ,  B01D69/02 ,  B01D71/52

Abstract: A process for preparing a porous membrane containing a thermoplastic polymer, the process containing: (i) forming a film shaped compound containing the thermoplastic polymer and a water soluble polymer; and (ii) extracting the film shaped compound with a solvent mixture, thereby obtaining the porous membrane; wherein the thermoplastic polymer has pores with an average pore diameter