Method of producing alkoxysilanes and precipitated silicas from biogenic silicas
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United States of America Patent
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Dec 23, 2014
Issued Date -
N/A
app pub date -
Jan 9, 2013
filing date -
Jan 17, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of producing alkoxysilanes and precipitated silicas from biogenic silicas is provided. In a first step, biogenically concentrated silica is mixed with a liquid polyol to obtain a mixture, and then the mixture is heated. In a second step, a base is added to obtain a reaction mixture. In a third step, the reaction mixture is filtered to remove the carbon enriched RHA or other undissolved biogenic silica and recover the solution of alkoxysilane and alcoholate. In a fourth step, alkoxysilane is purified by filtering, distilling, precipitating or extracting from the original reaction solution to precipitate various forms of silica. In a final step, residual base present in alkoxysilane is neutralized to eliminate the residual alkali metal base.
First Claim
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International Classification(s)
- 2013 Application Filing Year
- C01B Class
- 1318 Applications Filed
- 1164 Patents Issued To-Date
- 88.32 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- C01B Class
- 13.95 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 23, 2026 |
