| abstract |
A curable composition. The composition containn (A) a copolymer that has silicon-containing functional groups capable of crosslinking by forming siloxane bonds and whose molecular chain consists substantially of:n (1) an alkyl acrylate ester monomeric unit and/or an alkyl methacrylate ester monomeric unit, the alkyl of each being 1 to 8 carbon atoms; and (2) an alkyl acrylate ester monomeric unit and/or an alkyl methacrylate ester monomeric unit, the alkyl of each being at least 10 carbon atoms; (B) an oxyalkylene polymer having silicon-containing functional groups that are capable of crosslinking by forming siloxane bonds; and (C) at least one compound selected fromn (i) a hydrolyzable organic silane monomer represented by the formula (I): n R¹ 4-n SiX n nwherein X is a hydrolyzable group, R¹ is a monovalent organic group having 1 to 18 carbon atoms, n is an integer of 1 to 4, and each R¹ or X can be the same or different when two or more R¹ or X groups are attached, (ii) a partial hydrolysis condensate of the organic silane monomer represented by the formula (I), and (iii) an orthoorganic acid ester represented by the formula (II): n R²C(OR³)₃ nwherein R² is hydrogen or methyl, R³ is a monovalent organic group having 1 to 8 carbon atoms, and the three R³ groups do not need to be the same. |