Edge reinforcement of membranes for chlor-alkali cells
US4770757A · kind A · utility
1Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Mar 3, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2371/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A presoaked perhalogenated polymer cation exchange membrane containing at least one type of acid groups, carboxyl or sulfonyl, is bonded to other articles such as edge-reinforcing tape, gasket, electrolytic cell frame, etc., by means of a pressure-sensitive adhesive material from the group of butyl rubber, styrene-butadiene rubber, and polyacrylate rubber. Presoaking of the membranes is done either in water or in an aqueous alkaline solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.