Processing of chemically modified cellulosic fibres
US11286601B2 · kind B2 · utility
0Cited by
211References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2020 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Mar 2, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A chemically modified cellulosic fibre or filament having a moisture content of at least 7% by weight obtained by a process comprising the steps of (i) obtaining cellulosic fibres or filament and chemically modifying the cellulose by substitution to increase its absorbency; (ii) washing the fibres after step (i) in a mixture comprising water and up to 99% by weight of water-miscible organic solvent; (iii) drying the fibres to a moisture content of at least 7% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.