TWO-PART CURABLE LIQUID SILICONE RUBBER COMPOSITION
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United States of America Patent
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Issued Date -
Sep 17, 2015
app pub date -
Jul 29, 2013
filing date -
Jul 30, 2012
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Abandoned
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Abstract
A two-part curable liquid silicone rubber composition is composed of a first liquid composition and a second liquid composition, which are stored separately and yield upon mixing a silicone rubber-forming composition. The silicone rubber-forming composition comprises: (A) a diorganopolysiloxane having an average of at least 2 alkenyl groups in a molecule; (B) a silicon-bonded hydrogen atom-containing organopolysiloxane composed of (B-1) an organopolysiloxane having an average of not more than 2 silicon-bonded hydrogen atoms in a molecule only in side molecular chains and (B-2) an organopolysiloxane having 2 silicon-bonded hydrogen atoms only at both molecular terminals; (C) a calcium carbonate powder; and (D) a platinum-based catalyst. The two-part curable liquid silicone rubber composition provides a cured product with suppressed fluctuations of properties even if the mixing ratio of a first composition and a second composition is changed.
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