Method for preparing regenerated cellulose fiber by two-step coagulating bath process
US8962821B2 · kind B2 · utility
7Cited by
3References
16Claims
0Family size
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Key dates
| Filing date | Apr 21, 2006 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Mar 24, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F1/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a non-toxic process and system for pilot-scale production of cellulose products, and particularly to a process and system for pilot-scale production of cellulose products by using aqueous sodium hydroxide/urea solution pre-colled to lower than −8° C., in which cellulose could dissolved rapidly. The said process and system can be used to produce fibers, films, chromatographic packings, or nonwovens of regenerated cellulose, as well as to produce a variety of high added-value products by adding other materials such as functional materials, nano-materials, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.