Process for manufacturing a fibrillated cellulose powder suitable for being dispersed in an aqueous medium
US9969815B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jun 24, 2013 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Oct 14, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B15/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for manufacturing a fibrillated cellulose powder suitable for being dispersed in an aqueous medium, comprising a step of adding a monovalent salt (e.g., sodium chloride, potassium chloride, and lithium chloride) to a fibrillated cellulose suspension, followed by a lyophilization step to provide the fibrillated cellulose powder. Also disclosed are a method of dispersing the fibrillated cellulose powder comprising the method for manufacturing with the further steps of suspending the fibrillated cellulose powder in an aqueous medium and subsequent dialysis of the suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.