Method for production of man-made textile yarns from wood fibers
US10501871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Mar 13, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G3/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
We have developed an environmentally-friendly new process for producing textile yarns. The process involves chemical modification of cellulose with subsequent dissolution of the chemically modified cellulose with chitosan or other amine group-containing compounds which yields a highly viscous gel. The chemical modification of cellulose employs a known process of periodate oxidation which we have modified to obtain fibers with a low degree of aldehyde groups (˜2 mmol/g cellulose) that still remain insoluble in water. After washing, the chemically modified fibers can be cross-linked with chitosan or other amine group-containing compounds to produce the viscous gel. The viscous gel can then be extruded through a syringe nozzle in the form of textile yarns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.