Addition of salts to improve the interaction of silica with rubber
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United States of America Patent
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Jan 30, 2001
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N/A
app pub date -
Feb 10, 1999
filing date -
Jul 11, 1997
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Abstract
Incorporation of neutral water soluble inorganic salts into a precipitated silica improves the filler dispersion in a compounded rubber, reduces rolling resistance (hysteresis), and improves processability. These properties are achieved without loss of the expected reinforcement effect due to the substitution of inorganic salt for SiO.sub.2 in the silica. The properties are seen when a variety of silanes and processing aids are added to the silica.
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