Asymmetric permselective polyacetylene membranes and process for the formation thereof
US4968470A · kind A · utility
2Cited by
13References
21Claims
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Key dates
| Filing date | Nov 15, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Nov 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Asymmetric polyacetylene polymer membranes having both improved selectivity and improved flux are provided by a process which comprises forming a solution containing from about 1 to about 5% by weight of a polyacetylene polymer in any suitable solvent therefor, forming the solution into a thin film and quenching the film in an aqueous bath in the presence of from about 0.002 to about 0.4% by weight of the quench bath of surfactant with an HLB value of 11 to 15. Additionally, the polyacetylene polymer solution contains a swelling agent at about 1% to about 10% by weight of polyacetylene polymer solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.