Hydrophilic microporous polyolefin membrane
US5209849A · kind A · utility
75Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Apr 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hydrophilic microporous membrane, is provided comprising a hydrophobic membrane substrate exemplified by a polyolefin or partially fluorinated polyolefin membrane. A process is also provided for preparing a hydrophilic membrane by grafting a water soluble polymer to the hydrophobic membrane substrate surface by irradiation means, e.g., ultraviolet irradiation. The invention further concerns a method for making the membrane and process means for filtering a fluid through such membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.