公开(公告)号：US20240101810A1

公开(公告)日：2024-03-28

申请号：US17768986

申请日：2020-09-04

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Eun Ho SOHN ,  Shin Hong YOOK ,  Hong Suk KANG ,  In Joon PARK ,  Sang Goo LEE ,  Soo Bok LEE ,  Won Wook SO ,  Hyeon Jun HEO ,  Dong Je HAN ,  Seon Woo KIM

IPC: C08L33/16 ,  C09D133/16

CPC classification number: C08L33/16 ,  C09D133/16

Abstract: The present invention relates to a composition for forming a composite polymer film, a method for preparing the composition for forming a composite polymer film, a composite polymer film and a method for preparing the composite polymer film. The composition for forming a composite polymer film comprises: a fluorine-based polymer solution comprising a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the fluorine-based polymer solution. The method for preparing the composition for forming a composite polymer film comprises the steps of: preparing a fluorine-based polymer solution comprising a fluorine-based polymer; and dispersing polyvinylidene fluoride nanoparticles in the fluorine-based polymer solution. The composite polymer film comprises: a polymer matrix formed from a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the polymer matrix. The method for preparing the composite polymer film comprises the steps of: preparing a fluorine-based polymer solution comprising a fluorine-based polymer; preparing a composition, for forming a composite polymer film, by dispersing polyvinylidene fluoride nanoparticles in the fluorine-based polymer solution; and forming the composite polymer film by applying the composition for forming a composite polymer film.

公开(公告)号：US20240194372A1

公开(公告)日：2024-06-13

申请号：US18250147

申请日：2021-10-25

Applicant: KOREA ELECTRO TECHNOLOGY RESEARCH INSTITUTE ,  KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Ki Dong SONG ,  Yeon Ho OH ,  Hyun Jae JANG ,  In Joon PARK ,  Won Wook SO ,  Shin Hong YOOK ,  Sang Goo LEE ,  Hong suk KANG ,  Ju Hyeon KIM ,  Ji Hoon BAIK ,  Eun Ho SOHN ,  Myoung Sook LEE ,  Bong Jun CHANG

IPC: H01B3/56 ,  H01H33/56 ,  H02B13/055

CPC classification number: H01B3/56 ,  H01H33/56 ,  H02B13/055 ,  H01H2033/566

Abstract: The present invention relates to an insulating gas used for electrical insulation or arc extinguishing of an electrical device, and an electrical device for insulating electricity using the same. The insulating gas of the present invention, which may replace SF6 gas, consists of a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas of the present invention has the characteristics of a low boiling point, high dielectric strength, low toxicity, and a low global warming potential (GWP=1 or less), and thus may replace SF6, and the low global warming potential with no loss of high insulating capacity and arc extinguishing capability may reduce greenhouse gases.

公开(公告)号：US20230278944A1

公开(公告)日：2023-09-07

申请号：US18018395

申请日：2021-07-26

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY ,  KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

Inventor： Sang Goo LEE ,  In Joon PARK ,  Won Wook SO ,  Shin Hong YOOK ,  Hong Suk KANG ,  Eun Ho SOHN ,  Ki Dong SONG ,  Yeon Ho OH ,  Hyun Jae JANG

IPC: C07C43/12

CPC classification number: C07C43/12

Abstract: The present invention relates to a method for preparing a perfluorodialkyl ether, comprising the steps of: (A) preparing a perfluorodialkyl ether from a compound represented by Formula 1 in the presence of a metal fluoride; and (B) isolating the perfluorodialkyl ether, and to an apparatus for preparing perfluorodialkyl ether, comprising: a reactor for preparing a perfluorodialkyl ether from a compound represented by Formula 1 in the presence of a metal fluoride; a reactant supplier for introducing the compound represented by Formula 1 into the reactor; and a discharge unit for discharging the perfluorodialkyl ether from the upper portion of the reactor.