Narrow pore-size distribution polytetramethylene adipamide or nylon 46 membranes and process for making them
US5084179A · kind A · utility
13Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | Jun 28, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Jun 28, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hydrophilic polytetramethylene adipamide microporous membrane has a narrow pore-size distribution. The membrane is formed by a rapid quench process in a quench bath having solubility parameter above and 21 Hildebrands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.