Process for the production of cellulose moulded bodies
US5653931A · kind A · utility
19Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2301/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is concerned with a process for the production of cellulose moulded bodies, particularly films and fibres, by extruding a solution of cellulose in a tertiary amine-oxide through a shaping device, for example a spinneret, and conducting the extruded moulded body while drawing it into an aqueous precipitation bath, in which it coagulates, whereafter the coagulated moulded body is washed with an aqueous washing liquid, characterized in that the precipitation bath employed for coagulation and/or the washing liquid employed for washing contain(s) a surfactant in dissolved form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.