| abstract |
(57) [Summary] [Purpose] Without reducing the flexibility of the curable composition, Reduces viscosity. A polyoxypropylene polymer (I) containing a hydrolyzable silicon group having a molecular weight of 30,000 on average in the molecular chain and having a molecular weight of 30,000, and its polymer 10 A molecular weight of 2200 to 3200 having an average of 0.5 to less than 1.5 hydrolyzable silicon groups in the molecular chain based on 0 part by weight. 30 parts by weight of the low molecular weight compound (II) containing a hydrolyzable silicon group whose main chain is polyether. [Effect] Since an additive having a low migration property is used, when the composition is used as a sealing agent or the like, contamination around the sealing portion and adverse effects on the adhesiveness are not caused. |