폴리이미드계 수지의 제조 방법

• Main Authors: MIYAMOTO KOJI, OKUBO EMI, NISHIYAMA NATSUMI
• Format: Patent
• Language: Korean
• Published: 01.09.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

내굴곡성이 우수한 필름을 형성 가능한 폴리이미드계 수지의 제조 방법을 제공한다. 디아민 화합물과 3개 이상의 카르보닐기를 가지는 카르본산 화합물을 반응시키는 단계 (A)를 포함하는 중간체 (K)를 얻는 공정 (I), 및 당해 중간체 (K)에, 추가로 디아민 화합물을 반응시키는 공정 (II)를 포함하는, 폴리이미드계 수지의 제조 방법. Provided is a method for producing a polyimide resin capable of forming a film which has a high flex resistance. A method for producing a polyimide resin comprises: a process (I) for preparing an intermediate (K), said process including step (A) for reacting a diamine compound with a carboxylic acid compound having 3 or more carbonyl groups; and a process (II) for further reacting the intermediate (K) with a diamine compound.