Crosslinked polysaccharides and methods of making and using crosslinked polysaccharides
US7595391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2003 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Mar 20, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2305/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to methods of crosslinking polysaccharides to form crosslinked polysaccharides, and more particularly, to crosslinked polysaccharides that may be incorporated in fluids useful in, for example, applications requiring a crosslinked viscoelastic gel. In one embodiment, the present invention provides a method of crosslinking a polysaccharide comprising the steps of: providing a metal coordinating group having a reactive site, derivatizing a polysaccharide with the metal coordinating group to produce a derivatized polysaccharide having bidentate ligands, and crosslinking the derivatized polysaccharide having bidentate ligands with a metal ion to form a metal ligand coordination complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.