Hydrolyzed membrane and process for the preparation of the same
US5087367A · kind A · utility
4Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1989 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Jul 21, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/421
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A selectively water-permeable hydrolyzed membrane characterized in that it is mainly made of a material which can generate a carboxyl group by hydrolysis and that a part of the material is hydrolyzed to have carboxyl groups, which may be further coated with a hydrophilic polymer. The above membrane is useful as a selectively water-permeable membrane and is applicable not only to pervaporation and vapor permeation, but also to reverse osmosis, dehumidification of air and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.