US 11,851,559 B2
BCDA-based semi-alicyclic homo- or co-polyimide membrane materials for gas separation and the preparation method thereof
Jeong Hoon Kim, Daejeon (KR); Bong Jun Chang, Daejeon (KR); Simon MoonGeun Jung, Daejeon (KR); Su Young Moon, Daejeon (KR); Chae Young Park, Daejeon (KR); and Hoon moh Seong, Daejeon (KR)
Assigned to KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
Filed by KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
Filed on Nov. 20, 2019, as Appl. No. 16/689,651.
Claims priority of application No. 10-2018-0152493 (KR), filed on Nov. 30, 2018.
Prior Publication US 2020/0199348 A1, Jun. 25, 2020
Int. Cl. C08L 33/24 (2006.01); C08F 22/40 (2006.01); B01D 71/64 (2006.01)
CPC C08L 33/24 (2013.01) [B01D 71/64 (2013.01); C08F 22/40 (2013.01); B01D 2256/245 (2013.01); B01D 2257/104 (2013.01); B01D 2257/108 (2013.01); B01D 2257/504 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A homo- or co-polyimide material comprising a compound of Formula 1′:

OG Complex Work Unit Chemistry
wherein

OG Complex Work Unit Chemistry
is at least one compound selected from the group consisting of

OG Complex Work Unit Chemistry
wherein n is greater than or equal to 10.