Sulfonamide bonded hydrophilic coatings
US5389449A · kind A · utility
58Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jan 5, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of derivatizing a chromatography matrix having a hydrophobic surface involves reacting the hydrophobic surface with a halosulfonating agent to produce a significant amount of halosulfone groups covalently bonded onto the surface. Sulfonamide bonds then are formed between these halosulfone groups and a group of amine functions on a polyaminated polymer to produce a pellicular anion exchange layer covalently bonded to the surface. The resulting layer is stable in the absence of cross-links between the molecules of the polyaminated polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.