| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealant for a secondary battery capable of forming a sealant layer excellent in water resistance, moisture resistance, and heat resistance.SOLUTION: The sealant composition for secondary battery contains diene rubber and a polymer composed of an isobutylene block and a styrene block, and a weight ratio of the diene rubber to the polymer composed of the isobutylene block and the styrene block is 40/60 to 80/20 (the diene rubber/the polymer composed of the isobutylene block and the styrene block). |
