公开(公告)号：US11466115B2

公开(公告)日：2022-10-11

申请号：US16982258

申请日：2019-05-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Lucas D. McIntosh ,  Carl A. Laskowski ,  Timothy M Gillard

IPC: C08F297/04 ,  B01D67/00 ,  B01D69/02 ,  B01D71/24 ,  B01D71/28 ,  B01D71/80

Abstract: A porous membrane includes a triblock copolymer of the formula ABC. B is a hydrogenated vinyl aromatic block present in a range from 30 to 90 weight percent, based on the total weight of the copolymer and has a Tg of ≥110° C. C is a rubbery block present in a range from 10 to 70 weight percent, based on the total weight of the copolymer and has a Tg≤25° C. A is substantially incompatible with both the B and C blocks and is derived from ring-opening polymerization. B+C is present in a range from 70 to 95 weight percent, based on the total weight of the copolymer.