| 摘要 |
A composition comprises (A) a condensation reaction catalyst, (B) a polyorganosiloxane having an average, per molecule, of at least two hydrolyzable substituents, (C) a crosslinker, and (D) a thermally conductive filler. The polyorganosiloxane may be silanol terminated, and the crosslinker may be an alkoxysilylhydrocarbylene functional polyorganosiloxane. The composition is capable of reacting via condensation reaction to form a thermally conductive product. The composition and product are useful for thermal management in (opto)electronics applications. |
| 主权项 |
1. A composition comprising:(A) a condensation reaction catalyst,(B) a polyorganosiloxane having an average, per molecule, of at least two hydrolyzable substituents,(C) a crosslinker having formula (R12R2SiO1/2)f(R1R2SiO2/2)g(R2SiO3/2)h(R13SiO1/2)i(R12SiO2/2)j(R1SiO3/2)k(SiO4/2)l, where
each R1 is independently a monovalent organic group, each R2 has formulawhere each D is independently a divalent organic group, each R is independently a monovalent hydrocarbon group, each X is independently a hydrolyzable substituent, subscript a is 0, 1, or 2, subscript b≧0, subscript c is 0, 1, 2, or 3, with the proviso that a quantity (a+c)≧1; and subscript d≧1, subscript e is 0 or 1,
subscript f≧0, subscript g≧0, subscript h≧0, with the proviso that a quantity (f+g+h)≧2, subscript i≧0, subscript j≧0, subscript k≧0, subscript l≧0, with the proviso that a quantity (g+j)≧2, and with the proviso that when a quantity (a+c)=1, then a quantity (f+g+h)≧3, and(D) a thermally conductive filler. |
