| 摘要 |
PURPOSE:To obtain an electron ray-readily curable release agent composition, containing respective specific organopolysiloxanes, capable of providing a cured film, hardly causing the migration and changing with time, having a stable peel strength in the initial period and stably peelable by light peeling and useful as a back treating agent for the tacky tapes. CONSTITUTION:This composition comprises (A) 100 pts.wt. organopolysiloxane, expressed by formula I {R<1> is a (un)substituted monovalent hydrocarbon; R<2> is H or methyl; (m) is 1-8; (a) and (b) are each a positive number and [(a)+(b)] <=3} and having 100-3000cP viscosity at 25 deg.C and 1.412-1.428 refractive index and (B) 1-20 pts.wt. organopolysiloxane, expressed by formula II [R<3> is a 1-18C monovalent hydrocarbon, OH or an alkoxy; (n) is a positive number] and having 100-1000000cP viscosity at 25 deg.C and <=1.410 or 1.430 refractive index. |
