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：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：US20240318025A1

公开(公告)日：2024-09-26

申请号：US18259508

申请日：2021-12-28

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Eun-Ho SOHN ,  Hyeon Jun HEO ,  Won Wook SO ,  In Joon PARK ,  Bong Jun CHANG ,  Sang Goo LEE ,  Myoung Sook LEE ,  Shin Hong YOOK ,  Ju Hyeon KIM ,  Ji Hoon BAIK ,  Myung Seok OH ,  Jong Min KIM

IPC: C09D127/16 ,  C08J5/18 ,  C09D7/63

CPC classification number: C09D127/16 ,  C08J5/18 ,  C09D7/63 ,  C08J2327/16

Abstract: The present invention relates to a fluorine-based polymer coating film, an optical substrate comprising same, and a method for manufacturing the optical substrate, and provides a fluorine-based polymer coating film which is formed from fluorine-based polymer nanoparticles coming in contact and being bound to each other, and which is coated on a substrate to improve infrared transmittance. The fluorine-based polymer coating film according to the present invention has improved infrared transmittance, and since the size of the fluorine-based polymer nanoparticles is controlled to control the ultraviolet-infrared transmittance, transmission wavelength selectivity can be improved.

公开(公告)号：US20240199780A1

公开(公告)日：2024-06-20

申请号：US18286104

申请日：2022-02-07

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Eun-Ho SOHN ,  Won Wook SO ,  In Joon PARK ,  Bong Jun CHANG ,  Ju Hyeon KIM ,  Ji Hoon BAIK ,  Myung Seok OH ,  Jong Min KIM ,  Sang Goo LEE ,  Myoung Sook LEE ,  Hyeon Jun HEO ,  Shin Hong YOOK

IPC: C08F220/22 ,  C08F220/06 ,  C08F220/18 ,  C08F220/20 ,  C08K5/29 ,  C09D5/16 ,  C09D133/16

CPC classification number: C08F220/22 ,  C08F220/06 ,  C08F220/1818 ,  C08F220/20 ,  C08K5/29 ,  C09D5/1668 ,  C09D133/16

Abstract: The objective of the present invention is to provide a fluorine-based polymer having a low surface energy, a fluorine-based polymer composition comprising same, a fluorine-based polymer membrane comprising same, and a method for manufacturing same. The present invention provides an acrylate-based copolymer, and in particular, the present invention is characterized in that the number of fluorocarbons in the repeating unit is limited to 3 to 5, such that the surface energy of the polymer and the polymer membrane produced therefrom is significantly lowered. In addition, when the polymer of the present invention is coated on glass, etc., the polymer has the effect of remarkably improving light transmittance, and has excellent mechanical strength.