| 摘要 |
K08-50099C/SI/88 A curable composition. The composition contain (A) a copolymer that has silicon-containing functional groups capable of crosslinking by forming siloxane bonds and whose molecular chain consists substantially of: (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 siliconcontaining functional groups that are capable of crosslinking by forming siloxane bonds; and (C) at least one compound selected from (i) a hydrolyzable organic silane monomer represented by the formula (I): R14-nSiXn wherein 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): R2C(OR3)3 wherein 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. The composition has superior mechanical properties, transparency, storage stability and weather resistance. |
