Hollow polyvinyl alcohol fibers
US4071454A · kind A · utility
12Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Sep 10, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dialysis membrane comprising a plurality of polyvinyl alcohol hollow fibers of substantially homogeneous structure having a degree of orientation (.pi.) in the range of 60% .ltoreq. .pi. .ltoreq. 98% and a degree of swelling (.zeta.) in the range of 1.05 .ltoreq. .pi. .ltoreq. 1.80 times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.