Patent ID: 7704607
Filing Date: 2010-04-27
Classification: C08K,H01B,Y10T

Abstract:
1. A method of preventing or retarding corrosion of electric and electronic parts by a sulfur-containing gas, said method comprising sealing and encapsulating the electric and electronic parts with a cured product of a silicone rubber composition, wherein said silicone rubber composition comprises (A) 0.5 to 32% by weight of a metal powder selected from the group consisting of iron, tin, and zinc, (B) an organopolysiloxane containing at least two alkenyl radicals in a molecule, (C) an organohydrogenpolysiloxane containing at least two hydrogen atoms each attached to a silicon atom in a molecule, in an amount such that 0.5 to 4 mol of silicon-bonded hydrogen atoms in the organohydrogenpolysiloxane are available per mol of alkenyl radicals in the organopolysiloxane (B), and (D) a platinum group metal catalyst, wherein the cured product of the composition is a non-conductive silicone rubber having a volume resistivity of at least 1×10 9 Ω·cm.