Method of making cellulose yarn solution
US5362867A · kind A · utility
19Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Oct 29, 2013 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F2/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved method of making cellulose yarn solution made up of solvents such as N-methylmorpholine-N-oxide and recovered caprolactam involves cutting a wood pulp sheet into small pieces, which are subsequently added into a kneading machine having therein water solution containing 63-67% of N-methylmorpholine-N-oxide and recovered caprolactam. The kneading machine is subjected to a three-stage heat treatment to produce the cellulose yarn solution at low cost and best qualities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.