| abstract |
(57) [Problem] To provide a curable composition having a small increase in modulus of a cured product due to a silane coupling agent. (A) At least one silicon atom-containing group containing a silicon atom to which a hydroxyl group or a hydrolyzable group is bonded. Oxypropylene polymer having Mw / Mn Of 1.6 or less and a number average molecular weight of 6,000 or more, and (B) a silane coupling agent. |