Patent ID: 8415444

Claim:
A one-pack curable composition, which comprises: 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 the n R 1 groups each represent at least one member selected from the group consisting of C 1-20 alkyl groups, C 6-20 aryl groups, and C 7-20 aralkyl groups, and the (3−n) X 1 s are each 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 the R 2 , the R 3 , and the two R 4 s are each independently a hydrogen atom or an organic group; 0.1 to 100 parts by weight of a plasticizer (C), which is (poly)propylene glycol alkyl ether; and 0.1 to 20 parts by weight of an amino group-containing silane coupling agent (D), wherein the amidine compound (B) is preliminarily dissolved in the plasticizer (C) and the silane coupling agent (D) containing an amino group in a molecule, and a resultant mixture is mixed with the reactive silyl group-containing organic polymer (A).