Low consistency, one-part silicone elastomers
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United States of America Patent
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Sep 30, 1986
Grant Date -
N/A
app pub date -
Sep 27, 1985
filing date -
Sep 27, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A one-part silicone elastomeric composition that is flowable or easily extruded is prepared by mixing a hydroxyl endblocked polydiorganosiloxane, a difunctional silane having two amido radicals, and an organic peroxide suitable for vulcanizing silicone rubber. A nonacidic filler is optional. After being put in place, the composition is exposed to moisture to activate a chain extension reaction that increases the molecular weight of the polydiorganosiloxane, to improve the physical properties of the cured silicone elastomer. After chain extension has taken place, the composition is heated to activate the organic peroxide, thereby crosslinking the composition into a silicone elastomer. The composition is useful as a potting and encapsulating material.
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