公开(公告)号：US12173215B2

公开(公告)日：2024-12-24

申请号：US17570386

申请日：2022-01-07

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chong Min Koo ,  Tae Gon Oh ,  Seung Jun Lee ,  Seon Joon Kim ,  Soon Man Hong ,  Seung Sang Hwang ,  Albert Lee

IPC: C09K13/06 ,  C01B32/90 ,  C01B32/921 ,  C08K3/14 ,  C09G1/00 ,  C09G1/02 ,  C09G1/06 ,  C09K3/14 ,  C09K13/00 ,  C09K13/04 ,  C09K13/08 ,  C11D3/04 ,  C11D3/24 ,  C11D7/08 ,  C11D7/10 ,  C11D7/28

Abstract: The present invention relates to an etching composition and a method of producing a MXene. The etching composition of the present invention can stably and quickly produce a MXene at high temperature. The etching composition of the present invention can produce a MXene in high yield. The etching composition of the present invention can easily produce various types of MXenes. A method using the etching composition of the present invention can produce a MXene having excellent electrochemical and mechanical properties.

公开(公告)号：US11866597B2

公开(公告)日：2024-01-09

申请号：US17173268

申请日：2021-02-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chong Min Koo ,  In Sik In ,  Tae Yun Ko ,  Daesin Kim ,  Se Hyun Doo ,  Seon Joon Kim ,  Soon Man Hong ,  Seung Sang Hwang ,  Kyung Youl Baek ,  Albert Lee ,  Sangho Cho

IPC: C09D11/52 ,  C09D11/037 ,  C09D11/033 ,  H01B1/20 ,  C07F11/00 ,  C07F9/00 ,  C07F7/28 ,  H01B1/12 ,  C09D11/322 ,  C09D11/38 ,  C07C215/46 ,  C07C47/565

CPC classification number: C09D11/52 ,  C07C47/565 ,  C07C215/46 ,  C07F7/28 ,  C07F9/00 ,  C07F11/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38 ,  H01B1/12 ,  H01B1/20

Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers. This finding will lead to further studies on the structures, properties, and physics of the organic MXene liquid crystals and their practical applications.

公开(公告)号：US11666896B2

公开(公告)日：2023-06-06

申请号：US17162639

申请日：2021-01-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Youl Baek ,  Soon Man Hong ,  Seung Sang Hwang ,  Chong Min Koo ,  Seon Joon Kim ,  Albert Lee ,  Jin Young Seo ,  Min Hyuk Choi ,  Yu Ri Lee ,  Sejin Kim ,  Do Xuan Huy ,  Que Thi Nguyen ,  Sangho Cho

IPC: B01J31/06 ,  B01J31/16 ,  A62D3/35 ,  B01J35/00 ,  B01J37/02 ,  B01J37/34

CPC classification number: B01J31/1691 ,  A62D3/35 ,  B01J31/06 ,  B01J35/0006 ,  B01J37/0215 ,  B01J37/343

Abstract: Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.

公开(公告)号：US12048132B2

公开(公告)日：2024-07-23

申请号：US17179332

申请日：2021-02-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  DREXEL UNIVERSITY

Inventor： Yury Gogotsi ,  Kanit Hantanasirisakul ,  Chong Min Koo ,  Aamir Iqbal ,  Soon Man Hong ,  Seon Joon Kim ,  Seung Sang Hwang ,  Kyung Youl Baek ,  Albert Lee ,  Sangho Cho

IPC: H05K9/00 ,  C01B21/082 ,  C23C16/30

CPC classification number: H05K9/0088 ,  C01B21/0828 ,  C23C16/30 ,  B32B2255/205 ,  C01P2004/04 ,  C01P2006/14 ,  C01P2006/40

Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.

公开(公告)号：US11826927B2

公开(公告)日：2023-11-28

申请号：US17501806

申请日：2021-10-14

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Soon Man Hong ,  Hang Kyu Cho ,  Seung Sang Hwang ,  Chong Min Koo ,  Seon Joon Kim ,  Albert Lee ,  Hwan Gyu Lee ,  Junpyo Hong

IPC: B29B7/48 ,  C08J11/10 ,  C08J11/14 ,  C08J11/24 ,  B29C48/78 ,  B29C48/505 ,  B29C48/405 ,  B29K23/00 ,  B01J19/02 ,  B01J3/00

CPC classification number: B29B7/48 ,  B29C48/405 ,  B29C48/505 ,  B29C48/78 ,  C08J11/10 ,  C08J11/14 ,  C08J11/24 ,  B01J3/008 ,  B01J19/02 ,  B29K2023/0691 ,  C08J2323/26

Abstract: Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.

公开(公告)号：US20230136591A1

公开(公告)日：2023-05-04

申请号：US17570386

申请日：2022-01-07

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chong Min KOO ,  Tae Gon OH ,  Seung Jun LEE ,  Seon Joon KIM ,  Soon Man HONG ,  Seung Sang HWANG ,  Albert Lee

IPC: C09K13/06

Abstract: The present invention relates to an etching composition and a method of producing a MXene. The etching composition of the present invention can stably and quickly produce a MXene at high temperature. The etching composition of the present invention can produce a MXene in high yield. The etching composition of the present invention can easily produce various types of MXenes. A method using the etching composition of the present invention can produce a MXene having excellent electrochemical and mechanical properties.

公开(公告)号：US12276912B2

公开(公告)日：2025-04-15

申请号：US17384200

申请日：2021-07-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seung Sang Hwang ,  Soon Man Hong ,  Kyung Youl Baek ,  Chong Min Koo ,  Albert Lee ,  Seon Joon Kim ,  You Mee Choi

IPC: G03F7/075 ,  C08G77/04 ,  C08G77/18 ,  C08G77/20 ,  C08G77/28 ,  H01B3/30

Abstract: The present disclosure relates to a UV- and heat-curable ladder-like polysilsesquioxane copolymer and a method for preparing the same. Since a controlled functionality can be provided only on a desired region via a thiol-ene click reaction without an additional additive, an insulating layer having a low dielectric constant and a microcircuit pattern can be formed without an additional etching process.

公开(公告)号：US20230137881A1

公开(公告)日：2023-05-04

申请号：US17696877

申请日：2022-03-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Chong Min KOO ,  Tae Yun KO ,  Jae Eun YOON ,  Soon Man HONG ,  Seon Joon KIM ,  Seung Sang HWANG ,  Albert Lee ,  Myung Ki KIM ,  Chang Hoon PARK ,  Ji Sung KWON

IPC: G02B1/116 ,  G02B5/22

Abstract: The present disclosure relates to a visible and infrared stealth element. The element of the present disclosure may selectively control thermal radiation energy according to a wavelength, and may also control a surface color and reflectance of near-infrared light and short-wavelength infrared light.

公开(公告)号：US20220372231A1

公开(公告)日：2022-11-24

申请号：US17384200

申请日：2021-07-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seung Sang HWANG ,  Soon Man Hong ,  Kyung Youl Baek ,  Chong Min Koo ,  Albert Lee ,  Seon Joon Kim ,  You Mee Choi

IPC: C08G77/04 ,  C08G77/28 ,  G03F7/075 ,  H01B3/30

Abstract: The present disclosure relates to a UV- and heat-curable ladder-like polysilsesquioxane copolymer and a method for preparing the same. Since a controlled functionality can be provided only on a desired region via a thiol-ene click reaction without an additional additive, an insulating layer having a low dielectric constant and a microcircuit pattern can be formed without an additional etching process.