| 摘要 |
PURPOSE:To obtain the titled composition with both outstanding storage stability in the absence of mixture and fluidity, good in deep-reaching curability at room temperature, by incorporating a specific polyorganosiloxane with a polymer containing acrylic acid or its alkali metal salt. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of a polyorganosiloxane with its molecular end hindered with silanol group, having a viscosity 500-500,000cst at 25 deg.C, also pref. with >=85% of the total number of the organic group being methyl group with (B) 0.5-20pts. wt. of an alkoxysilane of formula I (R<1> is monovalent hydrocarbon group or of formula II; R<2> is monovalent hydrocarbon group) and/or its partially hydrolyzed condensate, (C) 0.01-10pts.wt. of a curing accelerator (e.g., dibutyltin dilaurate) and (D) 0.1-5(pref. 0.1-2)pts.wt. of a polymer containing acrylic acid (alkali meal salt), e.g., acrylic acid-vinyl alcohol copolymer, sodium acrylate polymer, sodium acrylate-acrylamide copolymer. |
