Process and system for increasing the solids content of microfibrillated cellulose
US12168852B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2019 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | Apr 8, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B5/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process and a system for the at least partial removal or exchange of solvent from/in a suspension comprising microfibrillated cellulose (MFC), specifically the at least partial removal of solvent from a suspension comprising microfibrillated cellulose having a comparatively high solvent (water) content to a relatively lower solvent content. Accordingly, the solids content of the microfibrillated cellulose increases during the the step of at least partial removal of solvent from a suspension comprising process, in particular from a first solids content in the range of from 0.1% weight by weight (“w/w”) to 6% w/w, preferably 1% weight by weight (“w/w”) to 5% w/w, up to a second solids content of above 5% w/w, preferably to a solids content of from above 5% w/w-50% w/w, further preferably to a solids content of from above 5% w/w-25% w/w. In a separate aspect, a solvent exchange step after the at least partial removal of a first solvent is also part of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.