Semipermeable polymeric film membrane
US4614586A · kind A · utility
4Cited by
2References
7Claims
0Family size
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Inventors
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A semipermeable membrane having a surface comprised of a poly(arylacetylene) having at least a part of its benzene nuclei introduced with sulfonic acid groups. The poly(arylacetylene) is represented by the following structural formula (I): ##STR1## wherein X stands for Cl, Br or CH.sub.3, R stands for H or CH.sub.3 and n is a positive integer. The semipermeable membrane may be obtained by subjecting a membrane formed of the poly(arylacetylene) of the formula (I) to sulfonation conditions or by sulfonating the poly(arylacetylene) of the formula (I), and forming the sulfonated product into membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.