| 摘要 |
PURPOSE:To obtain a composition capable of producing a foam with high foam stability and toughness by incorporating a polydiorganosiloxane with an aminoxy group-contg. organosilicon compound, Si-H-contg. polyorganosiloxane and benzene-soluble polyorganosiloxane. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of a polydiorganosiloxane with its terminal hindered with silanol group, giving a viscosity 500-200,000cps at 25 deg.C with (B) 0.1-50pts.wt. of an aminoxy group-contg. organosilicon compound having in the molecule at least two, on average, organoaminoxy groups bonded to silicon atom, (C) 0.1-50pts. wt. of an Si-H-contg. polyorganosiloxane having in the molecule at least two, on average, Si-H bonds with the number of said bonds representing >=10% based on the number of Si atom and (D) 0.5-50pts.wt. of a benzene-soluble polyorganosiloxane to which 1-0.0005 H atom per Si atom is bonded, with a ratio SiO2/R3<1>SiO1/2 (R is monovalent hydrocarbon) = 1/0.4-1.0 (molar ratio). |
