Thermally conductive condensation reaction curable polyorganosiloxane composition and methods for the preparation and use of the composition

A method comprising (i) mixing ingredients comprising:

• (A) a condensation reaction catalyst,
• (B) a polyorganosiloxane having an average, per molecule, of at least two hydrolyzable substituents,
• (C) a crosslinker having unit 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 formula
• where 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;
• 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;
• thereby preparing a curable composition;
• where ingredient (D) is present in an amount of from 30% to 80% by volume of the curable composition.