Process for producing a bifunctional filter membrane having iminodiacetic acid groups
US5071880A · kind A · utility
36Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1989 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Nov 17, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249954
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for producing a filter membrane capable of simultaneous removal of metallic ions and nonionic materials from process water used in electronics industry, medical field, pharmaceutical industry and nuclear power generation. The membrane is produced by introducing iminodiacetic acid groups to a porous membrane made from polyolefin or a copolymer of an olefin and a halogenated olefin by uv or ionizing radiation initiated graft polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.