Sumitomo Riko Company Limited

Tomohito Seki

Ryosuke Yamaoka

Takahiro Morita

Yasunori Nimura

Yasuyuki Hayasaki

Shigeru Fukagawa

Provided is a silicone rubber composition that allows for both the securing of time for filling materials and an improvement in productivity which is achievable due to a short curing time, and that has excellent reproducibility of curing properties. The silicone rubber composition contains (a) an organopolysiloxane having an alkenyl group, (b) a peroxide cross-linking agent, and (c) a heat stabilizer, wherein (c) includes a compound represented by general formula (1). In formula (1), Rrepresents hydrogen or a methyl group, R, R, R, and R, each independently represent a C1-9 alkyl group, and Rrepresents hydrogen or a methyl group.

Silicone rubber composition, silicone rubber crosslinked body, and sealant

Provided are a silicone rubber composition that is excellent in storage stability and crosslinking reactivity, and a silicone rubber crosslinked body made from the silicone rubber composition. The silicone rubber composition contains (a) an organopolysiloxane, (b) a crosslinking agent, and (c) a microcapsule type catalyst that is made of microparticles of a resin and a crosslinking catalyst encapsulated in the microcapsules, wherein the solubility parameter of the resin of (c) is 7.9 or higher, a thermal conductivity of 0.16 W/m&#xb7;K or higher, and a glasstransition temperature of 40 to 145 degrees C. The silicone rubber crosslinked body is made of a crosslinked product of the above-described silicone rubber composition.

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Ageo, Japan

Tomohito Seki