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：US20230100403A1

公开(公告)日：2023-03-30

申请号：US17907844

申请日：2021-02-22

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Hong Suk KANG ,  In Joon PARK ,  Shin Hong YOOK ,  Eun-Ho SOHN ,  Sang Goo LEE ,  Soo Bok LEE ,  Won Wook SO

IPC: C08F114/22 ,  B01J10/00 ,  B01J19/06 ,  B01J19/18 ,  B01J19/00 ,  B01J19/10

Abstract: According to an embodiment of the present invention, provided is a process for polymerizing molecular weight—adjustable polymer, comprising: a reactant supply step of supplying a gaseous monomer, a surfactant, and an initiator; a polymerization reaction step of performing a polymerization reaction in which the monomer, the surfactant, and the initiator participate; and a product discharging step of discharging the polymer compound produced by the polymerization reaction, wherein the flow rate of the supplied initiator is inversely proportional to the molecular weight of the polymer compound, and the molecular weight of the polymer compound produced by the polymerization reaction is adjusted by controlling the flow rate of the initiator.

公开(公告)号：US20250084196A1

公开(公告)日：2025-03-13

申请号：US18580684

申请日：2022-07-04

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Eun-Ho SOHN ,  Won Wook SO ,  In Joon PARK ,  Bong Jun CHANG ,  Hong Suk KANG ,  Ju Hyeon KIM ,  Ji Hoon BAIK ,  Sang Goo LEE ,  Hyeon Jun HEO ,  Shin Hong YOOK ,  Dong Je HAN ,  Ji Young LEE

IPC: C08F220/14 ,  C08F220/22 ,  C08J5/18

Abstract: An aspect of the present invention is to provide a fluorine-based polymer showing a significantly low dielectric constant of less than 1.8 and a fluorine-based polymer composition including the same. The fluorine-based polymer provided in an aspect of the present invention shows a very low dielectric constant, wherein the polymer is not only a pollution-reducing material generating no harmful substance, but may also be utilized as a coating material in various fields due to high adhesiveness. Furthermore, a polymer film employing the polymer as a material has a volume resistance of about 5.8×1015 Ohmcm, showing an excellent resistance value as an insulating material.

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.