| 摘要 |
PURPOSE: An aqueous silicon dispersions hardenable by cross-linking and useable particularly as putty, paint or film coating is provided CONSTITUTION: A aqueous silicon dispersion is capable of cross-linking by water elimination into an elastomer with suitable mechanical properties and has a high cohesive and adhesive force on supports of different kinds, and eliminates the drawbacks of known dispersions, in particular concerning safety/toxicity (VOC content) and facility for use. The dispersion is characterized in that it contains hydroxylated condensable constituents and is free from hydrolyzable substituents (Sofh) capable of being transformed into VOC, it is free from VOC and polyvinylalcohol and it contains an α,ω-diOH POS (A), an adherence promoter (B) with Fas = NH2 functions and OH functions, and optionally: a catalyst (C) £tin salts|, a surfactant (D), a cross-linking agent (E) (MDT hydroxylated POS resin), fillers (F), a dispersing agent (G), a plasticizer (H), an antifungal agent (I), an antifoaming agent (J), a stabilizer (K) or a base (L). |
