| 摘要 |
PURPOSE:To obtain a composition which can form tough, peelable cured films with high curing rate by using a specific raw rubber-like organosiloxane, organohydrogenpolysiloxane, an addition reaction inhibitor. a platinum compound and an organic solvent. CONSTITUTION:The subject composition is composed of (A) 100 pts.wt. of a raw rubber-like organosiloxane bearing 2 or more higher alkenyl groups of the formula (a is 2 to 8) in the molecule such as dimethylpolysiloxane blocked with dimethylbutenylsiloxy group on its chain terminals, (B) 0.3 to 40 pts. wt. of organohydrodiene polysiloxane containing 2 or more hydrogen atoms bonding to Si atoms, (C) 0.001 to 5 pts.wt., preferably 0.05 to 1 pt.wt. of an addition reaction inhibitor such as benzotriazole, (D) a catalytic amount of a platinum compound such as fine particles of platinum or chloroplatinic acid and (E) an organic solvent. Preferably, A is homogeneously dissolved in E, then they are mixed with components B, C and D. |
