公开(公告)号：US10434463B2

公开(公告)日：2019-10-08

申请号：US15920962

申请日：2018-03-14

Applicant: Korea Research Institute of Chemical Technology

Inventor： Jeong Hoon Kim ,  Su Young Moon ,  Bong Jun Chang

IPC: B01D69/02 ,  B01D53/22 ,  B01D69/12 ,  B01D67/00 ,  C07C7/144 ,  B01D69/14 ,  B01D71/02 ,  B01D71/68 ,  B01D71/12 ,  B01D71/60

Abstract: A separation membrane for olefin separation and olefin separation method using the same are provided.

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：US10561991B2

公开(公告)日：2020-02-18

申请号：US15976437

申请日：2018-05-10

Applicant: Korea Research Institute of Chemical Technology

Inventor： Jeong Hoon Kim ,  Bong Jun Chang ,  Su Young Moon

IPC: B01D69/12 ,  B01D67/00 ,  B01D69/02 ,  B01D69/10 ,  B01D71/82 ,  B01D71/68 ,  B01D71/26 ,  B01D71/30 ,  B01D71/76

Abstract: The present invention provides a anion-exchange composite membrane comprising a copolymer containing a vinylbenzyl trialkylammonium salt repeating unit, a styrene repeating unit and a divinylbenzene derived repeating unit; an olefin additive; a plasticizer; and a polyvinyl halide polymer. The anion-exchange composite membrane comprising a copolymer containing a vinylbenzyl trialkylammonium salt repeating unit, a styrene repeating unit and a divinylbenzene derived repeating unit; an olefin additive; a plasticizer; and polyvinylidene fluoride of the present invention not only displays low electrical resistance, excellent ion exchange capability, excellent ionic conductivity, excellent mechanical properties, excellent chemical properties, and processability, but also is easy to regulate its ion exchange capacity and ionic conductivity. Also, the composite membrane of the invention is easier to produce and cheaper to manufacture than the conventional anion-exchange composite membrane.

公开(公告)号：US11684890B2

公开(公告)日：2023-06-27

申请号：US16827560

申请日：2020-03-23

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Jeong Hoon Kim ,  Chang In Kong ,  Yang No Yun ,  Su Young Moon ,  Bong Jun Chang ,  Bo Ryoung Park ,  Youn-Sang Bae ,  Tea-Hoon Kim

IPC: B01D53/22 ,  B01D71/00 ,  B01D67/00 ,  B01D69/12

CPC classification number: B01D53/228 ,  B01D67/0079 ,  B01D67/0083 ,  B01D69/12 ,  B01D71/00 ,  B01D2257/7025 ,  B01D2325/02 ,  B01D2325/20

Abstract: Provided are a methane-selective composite membrane comprising: a UiO-66 type organic-inorganic composite nanoporous material, a MIL-100 type organic-inorganic composite nanoporous material, or a ZIF-8 type organic-inorganic composite nanoporous material to which a methane-selective functional group is introduced for selectively separating methane from a gas mixture containing methane/nitrogen, a use thereof, and a method of preparing the same.

公开(公告)号：US10543463B2

公开(公告)日：2020-01-28

申请号：US15976149

申请日：2018-05-10

Applicant: Korea Research Institute of Chemical Technology

Inventor： Jeong Hoon Kim ,  Bong Jun Chang ,  Su Young Moon

IPC: B01D69/12 ,  B01D67/00 ,  B01D69/02 ,  B01D71/68 ,  B01D71/82 ,  B01D69/10 ,  B01D71/76 ,  B01D71/26 ,  B01D71/30 ,  B01D71/28

Abstract: The present invention provides a cation-exchange composite membrane comprising a copolymer containing a styrene repeating unit introduced with a sulfonation group, a tert-butylstyrene repeating unit and a crosslink repeating unit, an olefin additive, a plasticizer and a polyvinyl halide polymer. The cation-exchange composite membrane comprising a copolymer containing a styrene repeating unit introduced with a sulfonation group, a tert-butylstyrene repeating unit and a crosslink repeating unit, an olefin additive, a plasticizer and a polyvinyl halide polymer of the present invention not only displays low electrical resistance, excellent ion exchange capability, excellent ionic conductivity, excellent mechanical properties, excellent chemical properties, and processability, but also is easy to regulate its ion exchange ability and ionic conductivity. Also, the composite membrane of the invention is easier to produce and cheaper to manufacture than the conventional cation-exchange composite membrane.