Polyoxyethylene grafted membrane materials with grafting links derived from a diisocyanate
US4280970A · kind A · utility
45Cited by
9References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Jan 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31978
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Membrane forming polymers are converted to hydrophilic polymeric membranes by (a) grafting a polyoxyethylene chain to a membrane forming polymer structure and thereafter forming a membrane; (b) coating a membrane with a polymer to which a polyoxyethylene chain has been grafted; or (c) grafting in situ a polyoxyethylene chain to a formed membrane polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.