| abstract |
(57) [Problem] To provide a curable composition having excellent flexibility and excellent heat resistance. SOLUTION: (A) a block copolymer having at least one kind of block formed from an aliphatic hydrocarbon-based compound, and (B) an isobutylene-based polymer having a silicon group bonded to a hydrolyzable group or a hydroxyl group. And a curable composition comprising: The composition can be used as a sealing agent, an adhesive, a pressure-sensitive adhesive, a composition for a gasket, a spacer for a double glazing, and the like. |