Process for the production of shaped cellulose articles
US10240259B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 4, 2014 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2201/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of manufacturing a cellulose-based shaped article. The method comprises subjecting a solution of lignocellulosic material, dissolved in a distillable ionic liquid, to a spinning method, wherein the ionic liquid is a diazabicyclononene (DBN)-based ionic liquid. DBN-based ionic liquids have good dissolution power, high thermal and chemical stability, lack runaway reactions and exhibit low energy consumption, due to low spinning temperatures. The shaped cellulose articles can be used as textile fibers, high-end non-woven fibers, technical fibers, films for packaging, and barriers films in batteries, as membranes and as carbon-fiber precursors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.