Patent ID: 8008386

Claim:
A curable composition comprising: 100 parts by weight of an organic polymer (A) containing, in a molecule, a reactive silyl group represented by a formula: —SiR 1 n X 1 3-n , wherein each of the n R 1 groups represents at least one group selected from the group consisting of C 1-20 alkyl groups, C 6-20 aryl groups, and C 7-20 aralkyl groups, and each of the (3-n) X 1 s is independently either a hydroxyl group or a hydrolyzable group; 0.1 to 30 parts by weight of an amidine compound (B) represented by formula (1): R 2 N═CR 3 —NR 4 2 (1) wherein each of R 2 , R 3 , and the two R 4 s is independently a hydrogen atom or an organic group; and 0.1 to 100 parts by weight of a compound (C) containing, in a molecule, a sulfonyl group represented by a formula: —S(═O) 2 —, wherein the amidine compound (B) is dissolved and/or dispersed in the sulfonyl group-containing compound (C), and a resultant product is mixed in the reactive silyl group-containing organic polymer (A).