公开(公告)号：US11186484B2

公开(公告)日：2021-11-30

申请号：US16844213

申请日：2020-04-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seokhoon Ahn ,  Se Gyu Jang ,  Myung Jong Kim ,  Hun-Su Lee ,  Soul-Hee Lee ,  Min Sung Kang ,  Sangseok Lee ,  Yongho Joo

IPC: C01B21/064

Abstract: Disclosed is a method of purifying boron nitride nanotubes through a simplified process. Specifically, the method includes preparing a starting solution containing boron nitride nanotubes (BNNTs), a dispersant and a solvent, centrifuging the starting solution or allowing the starting solution to stand to collect a supernatant, adding an acid to the supernatant and filtering a resulting product.

公开(公告)号：US10584032B2

公开(公告)日：2020-03-10

申请号：US15655869

申请日：2017-07-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Myung Jong Kim ,  Hyun Jin Cho ,  Seokhoon Ahn ,  Se Gyu Jang ,  Soo Min Kim ,  Dong Ick Son ,  Jun Hee Kim ,  Tae Hoon Seo

IPC: C01B21/064 ,  B01J19/12 ,  B01J23/745 ,  B01J37/34

Abstract: Provided is a method for preparing boron nitride nanotubes, the method including: injecting a boron-metal catalyst composite into a reaction chamber; injecting a nitrogen precursor into the reaction chamber; producing a decomposition product of the boron-metal catalyst composite in a gas state by irradiating the boron-metal catalyst composite with a carbon dioxide laser or a free electron laser; and forming boron nitride nanotubes by reacting the decomposition product of the boron-metal catalyst composite in the gas state with the nitrogen precursor.

公开(公告)号：US11186776B2

公开(公告)日：2021-11-30

申请号：US16538831

申请日：2019-08-13

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hong Jin Lim ,  Nam Ho You ,  Seokhoon Ahn ,  Munju Goh ,  Se Gyu Jang ,  Myung Jong Kim

IPC: C09K19/38 ,  C08K3/013 ,  C08K3/14 ,  C08K3/22 ,  C08K3/28 ,  C08L63/00

Abstract: The present disclosure relates to a high thermal conductive polymer composite, comprising: a liquid crystalline resin comprising a mesogen and at least one linear polymerization reactive group, wherein the liquid crystalline resin is cured with a linear polymerization initiator and includes a molecular structure aligned in at least one direction.

公开(公告)号：US10975307B2

公开(公告)日：2021-04-13

申请号：US15865259

申请日：2018-01-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Munju Goh ,  Hyeonuk Yeo ,  Nam Ho You ,  Se Gyu Jang ,  Seokhoon Ahn ,  Young Soo Kim

IPC: G02F1/1333 ,  C09K19/38 ,  C09K19/12 ,  C09K19/30 ,  C09K19/32 ,  C09K19/22 ,  C09K19/16 ,  C09K19/24 ,  C09K19/34 ,  C09K19/20 ,  C09K19/04

Abstract: Disclosed is a liquid crystalline epoxy compound wherein an epoxy group is positioned at a side chain of the longer direction of a mesogen group and each of the mesogen group and the epoxy group is connected to the center of the molecular structure through a flexible linkage. Since the liquid crystalline epoxy compound includes an epoxy group positioned at a side chain of the longer direction of a mesogen group and each of the mesogen group and the epoxy group is connected to the center of the molecular structure through a flexible linkage, the interaction between the mesogens in a cured resin product occurs significantly without weakening even after curing, thereby improving the heat conductivity of the resin compound through the active heat transfer between the mesogens.