CONDUCTIVE SILICONE COMPOSITION TO BE CURED BY ADDITION REACTION AND PRODUCTION OF CONDUCTIVE CURED PRODUCT

摘要

PROBLEM TO BE SOLVED: To produce a conductive silicone composition, to be cured by an addition reaction, which can cure through an addition reaction and form a conductive silicone cured product having low electrical resistance and low electric receptivity and small in the temperature dependence of electrical resistance and a change of electrical resistance and electric resistivity with time, and to efficiently produce such a conductive silicone cured product. SOLUTION: This conductive silicone composition to be cured by an addition reaction comprises (A) 100 pts.wt. of an organopolysiloxane having, in a molecule, at least two alkenyl groups, (B) a composition-sufficietly curing quantity of an organopolysiloxane having, in a molecule, at least two hydrogens combined with a silicon, (C) 50-2000 pts.wt. of conductive metal-based finely divided powder, (D) a catalytic quantity of platinum-based catalyst for addition reaction and (E) 0.1-10 pts.wt., based on 100 pts.wt. of the total of components A, B, C and D, of a volatile solvent with a higher boiling pint (=400 deg.C) than the setting temperature of the composition. This conductive silicone cured product is obtained by removing the component E during or after curing this composition.