| 摘要 |
PROBLEM TO BE SOLVED: To provide a curable composition providing a cured product having excellent elastic recoverability and creep resistance, hardly causing surface tack after being cured in a short time, providing little surface staining over a long period, hardly causing crack and discoloration on the surface even after a long-term outdoor use, and having excellent weatherability. SOLUTION: The curable composition contains (A) a vinyl polymer of 100 pts.wt. having at least one crosslinkable silyl group represented by general formula (1): -[Si(R<SP>1</SP>)<SB>2-b</SB>(Y)<SB>b</SB>O]<SB>m</SB>-Si(R<SP>2</SP>)<SB>3-a</SB>(Y)<SB>a</SB>(wherein R1 and R2 are the same or different and are each 1-20C alkyl or the like, and when R1, R2 exist two or more, they may be the same or different; Y is hydroxyl or a hydrolyzable group; an is 0, 1, 2 or 3; b is 0, 1 or 2; m is an integer of 0 to 19, provided that a+mb≥1 is satisfied), and (C) a carboxylic acid metal salt of 3.5-6 pts.wt. In another embodiment, the curable composition contains (A) the vinyl polymer having at least one crosslinkable silyl group represented by general formula (1), (B) a polyether-based polymer having at least one crosslinkable silyl group represented by general formula (1) and (C) the carboxylic acid metal salt regulated so that the content of the component (C) may be 3.5-6 pts.wt. based on 100 pts.wt. of the components (A)+(B). COPYRIGHT: (C)2010,JPO&INPIT |
