| abstract |
【Task】 To provide a one-component curable composition having a good workability using an organic polymer having a reactive silicon group, and a cured composition exhibiting high strength. [Solution] (A) An organic polymer containing a reactive silicon group having a number average molecular weight of more than 6,000 and not more than 100,000, and (B) containing a reactive silicon group having a number average molecular weight of 500 to 6,000. A curable composition comprising an organic polymer and (C) silica. However, the component (A) has a number average molecular weight of the organic polymer in the range of 6,000 to 100,000, and at the end of the main chain and / or the side chain, the general formula (1): -SiR 1 3-a Z a ( 1) Is an organic polymer having an average of one or more silicon-containing groups per molecule. [Selection figure] None |