Rubber particle fractionation method, transport method, and storage method
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United States of America Patent
Stats
-
Oct 3, 2017
Grant Date -
Feb 9, 2017
app pub date -
Dec 16, 2014
filing date -
Jan 16, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides an effective method for fractionating rubber particles in natural rubber latex by particle size, and effective methods for transporting or preserving rubber particles. The present invention relates to a method for fractionating rubber particles in natural rubber latex by particle size, the method including centrifuging natural rubber latex in at least four stages at forces of 800 to 3,000×g, 6,500 to 10,000×g, 17,000 to 22,000×g, and 40,000 to 60,000×g to fractionate rubber particles. The present invention also relates to methods for transporting or preserving rubber particles, the methods including the steps of adding a buffer solution and an antioxidant to natural rubber latex or rubber particles fractionated from natural rubber latex; and freezing a mixture prepared in the above step.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- C08J Class
- 1723 Applications Filed
- 1369 Patents Issued To-Date
- 79.46 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 3, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 3, 2029 |
