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US 9,637,562 B2Granted
Processes for recovering rubber from aged briquettes and aged briquettes containing plant matter from non-Hevea plants
AssigneeBridgestone Corporation
InventorsYingyi Huang, Mark Smale, Robert White, Hiroshi Mouri, William Cole
Life of this patent
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Abstract
Provided herein are organic solvent-based processes for the removal of rubber from aged briquettes made from compressed plant matter (briquettes) of non-Hevea plants. Also provided are aged briquettes made from the compressed plant matter of non-Hevea plants where the briquettes have been aged for either various time period after formation and the rubber within the briquette has retained its a molecular weight to within a specified range.
Claims21
An aged briquette comprising:
- 78 to 95 weight % compressed chopped plant matter (based upon the total weight of the briquette) from a non-Hevea plant, said plant matter comprising bagasse, rubber, and resin,
- 2-20 weight % water (based upon the total weight of the briquette),
- 0.2-2 weight % antioxidant (based upon the total weight of rubber present in the plant matter),
- 0.1-5 weight % binder (based upon the total weight of the briquette), and
- wherein at least 90% of undersize material of less than 30 mesh has been removed from the chopped plant matter prior to briquetting and the briquette has been aged for 18-24 days after formation and the rubber within the briquette has a molecular weight of 1,000,000-1,500,000, as measured after organic solvent extraction of the rubber from the plant matter of the briquette.
2 more elements
An aged briquette comprising:
- 78 to 95 weight % compressed chopped plant matter (based upon the total weight of the briquette) from a guayule plant, said plant matter comprising bagasse, rubber, and resin,
- 2-20 weight % water (based upon the total weight of the briquette),
- 0.2-2 weight % antioxidant (based upon the total weight of rubber present in the plant matter),
- 0.1-5 weight % binder (based upon the total weight of the briquette),
- wherein at least 90% of undersize material of less than 30 mesh has been removed from the chopped plant matter prior to briquetting and the briquette has been aged for 18-24 days after formation and the rubber within the briquette has a molecular weight of 1,000,000-1,500,000, as measured after organic solvent extraction of the rubber from the plant matter of the briquette.
2 more elements
An aged briquette comprising:
- 78 to 95 weight % compressed chopped plant matter (based upon the total weight of the briquette) from a guayule plant, said plant matter comprising bagasse, rubber, and resin,
- 2-20 weight % water (based upon the total weight of the briquette), and
- 0.2-2 weight % antioxidant (based upon the total weight of rubber present in the plant matter),
- wherein at least 90% of undersize material of less than 30 mesh has been removed from the chopped plant matter prior to briquetting and the briquette has been aged for 18-24 days after formation and the rubber within the briquette has a molecular weight of 800,000-1,500,000, as measured after organic solvent extraction of the rubber from the plant matter of the briquette.
1 more element
Dependencies are inferred from the claim text.