수지 조성물

• Main Authors: ASABA YUTARO, SAKAMOTO RYOU, TAKENAKA KEISUKE, SASAKI JUN
• Format: Patent
• Language: Korean
• Published: 01.12.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

본 발명은, 도공성, 접착성이 우수함과 함께, 높은 전자 전도성과 섬유상 탄소 재료의 분산성, 분산 안정성을 양립할 수 있고, 높은 용량 유지율을 갖는 리튬 이차 전지를 얻을 수 있는 수지 조성물을 제공한다. 본 발명은, 섬유상 탄소 재료와, 비수계 용제와, 폴리비닐아세탈 수지를 포함하고, 상기 폴리비닐아세탈 수지는, 산성 관능기를 갖는 구성 단위를 갖고, 평균 중합도가 150 이상 1500 이하, 수산기량이 40.0 몰％ 이상 80.0 몰％ 이하인, 수지 조성물이다. The present invention provides a resin composition that has excellent application properties and excellent adhesion, can achieve high electron conductivity simultaneously with the dispersibility and dispersion stability of fibrous carbon materials, and enables production of lithium secondary batteries having high capacity retention. Provided is a resin composition containing: a fibrous carbon material; a non-aqueous solvent; and a polyvinyl acetal resin, the polyvinyl acetal resin including a structural unit containing an acidic functional group, and having an average degree of polymerization of 150 or greater and 1,500 or less and a hydroxy group content of 40.0 mol% or greater and 80.0 mol% or less.