Process for the preparation of chitosan fibers
US4464321A · kind A · utility
33Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1982 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Oct 7, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Hollow chitosan fibres for use in ultrafiltration processes are described, and which can be plasticized by the addition of glycerin such that they contain this latter in a quantity variable between 0.5 and 5% by weight with respect to the polymer. Said fibres are prepared by the wet spinning of acid chitosan solutions, using an alkali solution as the external fibre coagulant and a gaseous phase containing a basic gaseous component as the internal fibre coagulant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.