Interfacially synthesized reverse osmosis membrane
US4758343A · kind A · utility
48Cited by
7References
6Claims
0Family size
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Key dates
| Filing date | Sep 11, 1986 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Sep 11, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31536
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An interfacially synthesized reverse osmosis membrane comprising a microporous substrate and an ultra-thin membrane covering the substrate, wherein the ultra-thin membrane comprises a crosslinked piperazine polyamide as a main component and contains a constituent component represented by the following general formula (1): ##STR1## wherein R stands for --H or --CH.sub.3 and n is an integer of from 0 to 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.