Extraction of polyisoprene with high molar mass
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United States of America Patent
Stats
-
May 21, 2019
Grant Date -
Mar 29, 2018
app pub date -
Apr 14, 2016
filing date -
Apr 15, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a method for extracting high-quality polyisoprene by grinding plants via rotary shearing using a device comprising at least one rotor and at least one stator, into particles of size smaller than 1 mm, or grinding at a pH higher than 3 and lower than 8. This method is implemented in aqueous phase and allows the preparation of a dispersion of polyisoprene in water having a weight average molecular weight (MW) higher than 800 000 g/mol. The polyisoprene is extracted from plants and in particular from guayule (Parthenium argentatum). It is a method that is particularly heedful of the environment.
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International Classification(s)
- 2016 Application Filing Year
- C08H Class
- 118 Applications Filed
- 86 Patents Issued To-Date
- 72.89 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08H Class
- 0 % this patent is cited more than
- 6 Age
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 21, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 21, 2030 |
