US 12,420,240 B2
Composite membrane comprising highly permeable gutter layer and method for preparing same
Su Young Moon, Daejeon (KR); Jong Myeong Lee, Daejeon (KR); Bong Jun Chang, Daejeon (KR); Chang In Kong, Daejeon (KR); and Jae-Hyeok Lee, Daejeon (KR)
Assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
Appl. No. 18/005,455
Filed by KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
PCT Filed Jul. 15, 2021, PCT No. PCT/KR2021/009136
§ 371(c)(1), (2) Date Jan. 13, 2023,
PCT Pub. No. WO2022/015088, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 10-2020-0087222 (KR), filed on Jul. 15, 2020.
Prior Publication US 2023/0271144 A1, Aug. 31, 2023
Int. Cl. B01D 53/22 (2006.01); B01D 65/08 (2006.01); B01D 67/00 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/24 (2006.01); B01D 71/44 (2006.01); B01D 71/64 (2006.01); B01D 71/70 (2006.01)
CPC B01D 69/12 (2013.01) [B01D 53/228 (2013.01); B01D 65/08 (2013.01); B01D 67/0002 (2013.01); B01D 69/106 (2022.08); B01D 69/107 (2022.08); B01D 71/24 (2013.01); B01D 71/44 (2013.01); B01D 71/643 (2022.08); B01D 71/701 (2022.08); B01D 2257/504 (2013.01)] 8 Claims
OG exemplary drawing
 
1. 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-trimethylsilyl-l-propyne) (PTMSP) and a rubbery polymer,
wherein a mix ratio of the poly (l-trimethylsilyl-l-propyne) (PTMSP) and the rubbery polymer in the polymer blend ranges from 9:1 to 5:5 by weight.