公开(公告)号：US20230271144A1

公开(公告)日：2023-08-31

申请号：US18005455

申请日：2021-07-15

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Su Young MOON ,  Jong Myeong LEE ,  Bong Jun CHANG ,  Chang In KONG ,  Jae-Hyeok LEE

IPC: B01D69/12 ,  B01D69/10 ,  B01D53/22 ,  B01D65/08 ,  B01D71/44 ,  B01D71/24 ,  B01D71/70 ,  B01D67/00

CPC classification number: B01D69/12 ,  B01D69/107 ,  B01D53/228 ,  B01D65/08 ,  B01D71/44 ,  B01D71/24 ,  B01D71/70 ,  B01D67/0002 ,  B01D2257/504

Abstract: The present disclosure relates to a composite membrane in which a rubbery polymer is introduced into a gutter layer to suppress the physical aging of the highly permeable composite membrane, and more particularly, to a composite membrane comprising a porous support layer; a gutter layer on the porous support layer; and an active layer on the gutter layer, wherein the gutter layer comprises a blend of poly(l-trimethlsilyl-l-propyne) (PTMSP) and a rubbery polymer and a method for preparing the same. The composite membrane according to the present disclosure has high permeation performance and a remarkable decline in physical aging leading to a decrease in permeability over time and thus has very high industrial applicability.