Patent ID: 8853309

Claim:
A curable composition comprising: (A) an organic polymer having a silyl group cross-linkable by siloxane bond formation and, as a main chain skeleton, a polyoxyalkylene polymer; (B) a guanidine compound as a silanol condensation catalyst, represented by formula (1): R 1 N═C(NR 1 2 ) 2 (1) wherein each of the five R 1 s is independently at least one selected from the group consisting of a hydrogen atom, a hydroxy group, an amino group, a nitro group, a cyano group, a sulfonic acid group, and an organic group, provided that at least one of the five R 1 s is an aryl group; and (C) a phosphorus compound that has an aryl group, has a phosphorus atom with an oxidation number of +5, and has a melting point of 23° C. or higher.