Curable composition

Claim 1

A curable composition comprising components (A), (B), and (C) described below; (A) an organic polymer containing at least one silicon-containing group which has a hydroxyl or hydrolyzable group bonded to the silicon atom and which is crosslinkable by forming siloxane bonds, (B) one or more carboxylic acid metal salts selected from the group consisting of calcium carboxylate, vanadium carboxylate, iron carboxylate, titanium carboxylate, potassium carboxylate, barium carboxylate, manganese carboxylate, nickel carboxylate, cobalt carboxylate and zirconium carboxylate, and (C) an amine compound, wherein the organic polymer as the component (A) has a number average molecular weight within a range from 500 to 50,000 and also has one or more hydrolyzable silyl groups represented by the general formula (1): wherein R 1 and R 2 each independently represents an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, or a triorganosiloxy group represented by (R′) 3 SiO— (R′ each independently represents a substituted or non-substituted hydrocarbon group having 1 to 20 carbon atoms); X each independently represents an alkoxy group; a represents 0, 1, 2 or 3; b represents 0, 1 or 2, and a and b do not become 0 simultaneously; and m is 0 or an integer of 1 to 19, per molecule in the main chain ends and/or the side chains, wherein the organic polymer as the component (A) is a polyoxyalkylene polymer and/or a saturated hydrocarbon polymer, wherein the saturated hydrocarbon polymer contains a repeating unit originating in isobutylene in the total amount of 50% by weight or more.