High strength cellulose fiber or film
US5290349A · kind A · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1991 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Jul 22, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F2/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to the production of high tensile strength, solvent-spun cellulose fiber which is stable in alkaline solutions. More particularly, the invention relates to a process in which cellulose is solubilized in a zinc chloride solution then extruded into a coagulation medium in which the cellulose fibers form. The fibers are removed from the coagulation medium, treated to remove the coagulation medium, stretched and recrystallized in water, thus forming the high tensile strength, solvent-spun cellulose fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.