Amorphous silica particles comprising boron
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 15, 2005
Grant Date -
Aug 28, 2003
app pub date -
Mar 14, 2003
filing date -
Mar 3, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention pertains to an amorphous silica particle comprising 0.1 to 10.sup.5 ppm boron atoms, and optionally 0.05 to 15 wt. % aluminum atoms wherein the boron and aluminum atoms are covalently bonded to the oxygen atoms of the silica network. The amorphous silica particles are used as a reinforcing filler for rubber articles, particularly for tires, more particularly for tire treads.
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