Chlorine-stable membrane compositions
US4941972A · kind A · utility
16Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1984 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Dec 6, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/125
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel reverse osmosis membrane comprising a hydroxyalkyl methacrylate film cross-linked with a vinylaralkyl dialkylsulfonium salt is described. This film, when cast on a compatible substrate, results in a membrane of exceptional chlorine resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.