Method for processing nanofibrillar cellulose and product obtained by the method
US9469696B2 · kind B2 · utility
4Cited by
4References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 8, 2012 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H11/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for processing an aqueous gel of nanofibrillar cellulose by removing water from the aqueous gel by means of an organic solvent miscible with water. In the method: aqueous gel is introduced into a volume of organic solvent miscible with water in a controlled manner so that the aqueous gel is kept as a separate phase and forms discrete physical entities containing the nanofibrillar cellulose within the phase; water is changed with the organic solvent in said discrete physical entities of nanofibrillar cellulose; and the physical entities are separated from the volume of organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.