Process for making lyocell fibers from pulp having low average degree of polymerization values
US6706237B2 · kind B2 · utility
72Cited by
104References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Aug 23, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2965
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to methods of making lyocell fibers. In particular, the process includes reducing the average degree of polymerization of a pulp to about 200 to 1100 without substantially reducing the hemicellulose content of the pulp, and reducing the copper number to less than 2.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.