Patent ID: 8227528

Claim:
A curable epoxy resin composition comprising: (I) a curable epoxy resin; (II) an epoxy-resin curing agent; and (III) a silicone rubber powder obtained by curing a condensation-curable silicone rubber composition in a dispersed state in water, the powder having an epoxy equivalent measured by titration equal to or lower than 3,000 and an average particle size in the range of 0.1 to 100 μm, wherein component (III) is a silicone rubber powder obtained by curing a silicone rubber composition comprising the following components (A) through (D) in a water-dispersed state: (A) a diorganopolysiloxane capped at both molecular terminals with silanol groups and having in one molecule 30 or less silicon atoms; (B) an organopolysiloxane having in one molecule at least two silicon-bonded hydrogen atoms wherein the mole number of silicon-bonded hydrogen atoms contained in this component is equal to or lower than 80% of the mole number of silanol groups in component (A); (C) an epoxy-containing alkoxysilane wherein the mole number of silicon-bonded alkoxy groups contained in this component is equal to or greater than 40% of the mole number of silanol groups remained after subtraction of the mole number of the silicon-bonded hydrogen atoms of component (B) from the mole number of silanol groups of component (A); and (D) a condensation-reaction catalyst in an amount of 0.01 to 5 parts by weight per 100 parts by weight of the sum of components (A) to (C).