Methods for the production of biodegradable plastics material from cellulose plant wastes
US9758643B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Oct 29, 2014 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Oct 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L99/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods for the production of a biodegradable plastics material obtained from plant waste materials are provided which include the steps of dissolving plant waste material in an anhydrous solvent which includes anhydrous trifluoroacetic acid in order to dissolve a cellulose fraction of the material, the waste material being at least partly dehydrated in such a way that its water content is not likely to cause hydrolysis of the cellulose fraction, and removing the solvent from the solution containing the non-hydrolyzed cellulose fraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.