公开(公告)号：US11851559B2

公开(公告)日：2023-12-26

申请号：US16689651

申请日：2019-11-20

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Jeong Hoon Kim ,  Bong Jun Chang ,  Simon MoonGeun Jung ,  Su Young Moon ,  Chae Young Park ,  Hoon moh Seong

IPC: C08L33/24 ,  C08F22/40 ,  B01D71/64

CPC classification number: C08L33/24 ,  B01D71/64 ,  C08F22/40 ,  B01D2256/245 ,  B01D2257/104 ,  B01D2257/108 ,  B01D2257/504

Abstract: The present invention relates to a BCDA-based semi-alicyclic homo- or co-polyimide membrane material for gas separation and a preparation method thereof. The polyimide material prepared according to the present invention has high solubility in casting solvents, particularly in polar organic solvents, by interrupting asymmetry in the polyimide chain structure and formation of polyimide complexes compared with aromatic polyimides, and has higher heat resistance than the conventional aromatic polyimides and aliphatic polyimides, so that it is useful for the process of a high-selective permeable composite membrane or a asymmetric hollow fiber membrane used for commercial purposes, suggesting that it can be effectively used as a membrane for gas separation in various fields. In addition, the polyimide material membrane for gas separation of the present invention is useful because it has superior gas separation properties to the conventional commercialized aromatic polyimides or semi-alicyclic polyimides.

公开(公告)号：US09511320B2

公开(公告)日：2016-12-06

申请号：US14687353

申请日：2015-04-15

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Jeong Hoon Kim ,  Hee Moon Park ,  Bong Jun Chang ,  Mihye Yi ,  Eun-Hee Kim ,  Chae Young Park

IPC: B01D53/22 ,  B01D69/08 ,  B01D71/64 ,  B29C47/00 ,  B01D67/00 ,  B01D69/02 ,  B29C47/36 ,  B29C47/68 ,  B29K79/00 ,  B29L23/00 ,  B29C47/56

CPC classification number: B01D53/228 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/087 ,  B01D71/64 ,  B01D2053/224 ,  B01D2256/245 ,  B01D2257/504 ,  B01D2325/023 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/364 ,  B29C47/56 ,  B29C47/68 ,  B29K2079/085 ,  B29L2023/001 ,  Y02C10/10 ,  Y02P70/26

Abstract: The present invention relates to a polyimide-based macromolecular compound which is produced by using DOCDA and one or more diamines selected from the group consisting of MDA, ODA, PDA, TDA, TrMPD, TeMPD and MBCA; and a gas-separation asymmetrical hollow-fiber membrane comprising the same. The polyimide-based macromolecular compound according to the present invention can advantageously be used in the production of a gas-separation hollow-fiber membrane having an asymmetrical structure since the said compound is highly viscous due to a high molecular weight in addition to having outstanding gas permeability and high selectivity while having excellent high heat resistance, chemical resistance, and mechanical properties and being outstandingly soluble in polar organic solvents.

Abstract translation: 本发明涉及通过使用DOCDA和一种或多种选自MDA，ODA，PDA，TDA，TrMPD，TeMPD和MBCA的二胺生产的聚酰亚胺基高分子化合物。 以及包含该中空纤维膜的气体分离不对称中空纤维膜。 根据本发明的聚酰亚胺基高分子化合物可以有利地用于生产具有不对称结构的气体分离中空纤维膜，因为除了具有优异的气体之外，所述化合物由于高分子量而高度粘稠 渗透性和高选择性，同时具有优异的高耐热性，耐化学性和机械性能，并且极好地溶于极性有机溶剂。