Porous membrane having hydrophilic surface and process
US4618533A · kind A · utility
212Cited by
5References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Nov 30, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249979
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite porous membrane is formed from a porous polymeric membrane having desired bulk properties on which is directly coated a cross-linked polymer having desired surface properties. The composites membrane retains the porosity of the porous polymeric membrane. A preferred composite porous membrane is formed from a porous polyvinylidene fluoride to which is directly coated with a polymer formed of a cross-linked hydroxyalkyl acrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.