Patent ID: 6991751

Claim:
An electroconductive silicone pressure-sensitive adhesive composition, comprising: (A) 100 parts by weight of an organopolysiloxane having the average formula (1): R a SiO (4−a)/2 (1) wherein R is independently a substituted or unsubstituted monovalent hydrocarbon radical having 1 to 10 carbon atoms, and “a” is a positive number of 1.95 to 2.05; (B) 50 to 250 parts by weight of an organopolysiloxane comprising structural units of the formula (2): R 1 3 SiO 1/2 (2) wherein R 1 is independently a hydroxyl radical or a substituted or unsubstituted monovalent hydrocarbon radical having 1 to 10 carbon atoms and SiO 4/2 units, in a molar ratio (R 1 3 SiO 1/2 )/(SiO 4/2 ) ranging from 0.5 and 1.2; (C) 3 to 300 parts by weight per 100 parts by weight of components (A) and (B) combined of an electroconductive powder comprising core particles of an inorganic material or organic resin which are surface coated with a layer of a silicon-base polymer having reductive effect or a partially or entirely ceramic layer thereof, which is in turn surface coated with a metal by plating; and (D) an effective amount to cure component (A) of a crossinking agent.