Use of a pretreated precipitated silica as a reinforcing filler for silicon elastomer and the curable silicone elastomer compositions thus obtained by cold mixing
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United States of America Patent
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Dec 9, 2014
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N/A
app pub date -
Aug 6, 2009
filing date -
Jan 30, 2004
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Abstract
The invention relates to the use of a precipitated silica, pretreated by at least one organosilane hydrophobic compound or one hydrophobic silicone oil, as a reinforcing filler for silicone elastomer, the pretreated silica being incorporated in the silicone elastomer by cold mixing and having the following features: —a BET specific surface ranging from 50 to 450 m2/g, —a water wettability lower than 80, —a sulfur content lower than 0.1% by weight. The invention is directed to the curable silicone elastomer composition thus obtained.
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