Process for the preparation of a shapeable solution of cellulose in the presence of a tertiary amine oxide and an additive
US4880469A · kind A · utility
11Cited by
2References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 27, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Jun 27, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F2/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to solutions of cellulose destined to be extruded or spun, containing a tertiary amine oxide as solvent for the cellulose and in particular the N-oxide of N-methylmorpholine. It consists of using ammonium chloride or calcium chloride as additive in the preparation of these solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.