US Patent No: 5,433,861
Number of patents in Portfolio can not be more than 2000
Permanent deformation and use of sulfonated halopolymer articles
Stats
-
Jul 18, 1995
Issued date -
Sep 17, 1993
filing date -
08/123,487
serial no -
Expired
status
Importance
Loading Importance Indicators...
Abstract
This invention relates to the preparation of, and a device for using, a permanently deformed sulfonated halopolymer article. A flexible and non-brittle flange may be formed from at least one end of a hollow perfluorosulfonic acid membrane in one aspect of the invention. The flanged membrane is particularly useful for quick attachment and detachment to various instrumentation used for pervaporation. In addition, by packing the membrane with a means for increasing radial diffusion of fluid within the membrane, pervaporation efficiency may be increased.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,330,654 Novel polymers having acid functionality | 120 | 1980 | |
| 4,337,137 Composite ion exchange membranes | 41 | 1980 | |
| 4,337,211 Fluorocarbon ethers having substituted halogen site(s) and process to prepare | 44 | 1980 | |
| 4,358,412 Preparation of vinyl ethers | 50 | 1980 | |
| 4,358,545 Sulfonic acid electrolytic cell having flourinated polymer membrane with hydration product less than 22,000 | 180 | 1980 | |
| 4,470,889 Electrolytic cell having an improved ion exchange membrane and process for operating | 43 | 1980 | |
| 4,417,969 Sulfonic acid electrolytic cell membranes | 66 | 1982 | |
| 4,462,877 Composite ion exchange membranes | 23 | 1982 | |
| 4,478,695 Sulfonic acid electrolytic cell membranes and use thereof in the electrolysis of sodium chloride | 39 | 1983 | |
| 4,846,977 Method and device for separating polar from non-polar liquids using membranes | 22 | 1986 | |
| 4,764,320 Method for preparing semipermeable membrane compositions | 17 | 1987 | |
|
|
|||
| 4,329,435 Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof | 50 | 1980 | |
| 4,357,218 Cation exchange membrane and use thereof in the electrolysis of sodium chloride | 34 | 1980 | |
|
|
|||
| 4,270,996 Cation exchange membrane of fluorinated polymer for electrolysis and electrolysis using the membrane | 24 | 1979 | |
|
|
|||
| 4,751,004 Liquid chromatographic method and apparatus with a packed tube membrane device for post-column derivatization/suppression reactions | 34 | 1986 | |
|
|
|||
| 4,465,533 Method for making polymer bonded electrodes | 8 | 1983 | |