POLYIMIDE FILM FOR GRAPHITE SHEET, AND GRAPHITE SHEET PREPARED THEREFROM

• Main Authors: JUNG, Hyeong-Seop, WON, Dong-Young
• Format: Patent
• Language: English; French; Korean
• Published: 25.05.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS THEREOF; GENERAL PROCESSES OF COMPOUNDING; INORGANIC CHEMISTRY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention provides a polyimide film and a graphite sheet prepared therefrom, wherein the polyimide film is obtained by an imidization reaction of a polyamic acid comprising: quinoline and β-picoline as imidization catalysts; and acetic anhydride as a dehydrating agent. La présente invention concerne un film de polyimide et une feuille de graphite préparée à partir de celui-ci, le film de polyimide étant obtenu par une réaction d'imidisation d'un acide polyamique comprenant : de la quinoléine et de la β-picoline en tant que catalyseurs d'imidisation; et de l'anhydride acétique en tant qu'agent déshydratant. 본원은 이미드화 촉매로 퀴놀린(quinoline) 및 β-피콜린(β-picoline)을 포함하고, 탈수제로 아세트산 무수물(acetic anhydride)을 포함하는 폴리아믹산을 이미드화 반응시켜 얻어진 폴리이미드 필름 및 이로부터 제조된 그라파이트 시트를 개시한다.