Coated cation exchange yarn and process
US4988364A · kind A · utility
11Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Feb 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sheath/core yarn having as its core a fluorinated cation exchange resin, oriented at least 1x, in alkali metal salt form and as its sheath an unoriented or oriented melt-fabricable precursor or derivative of the same salt-form fluorinated cation exchange resin. The invention also includes various processes for making the sheath/core yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.