Absorbent with stability against salts and process for production thereof
US5811531A · kind A · utility
6Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1995 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | May 9, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B37/0096
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Absorbents of the present invention can be obtained by reacting the vicinity of the surface of (A) polysaccharide particles with a (B) crosslinking agent having at least two functional groups which can react with the polysaccharides such as polyglycidyl ether compounds, polyhydric alcohol compounds or polyamine compounds by means of treating the (A) polysaccharide particles with the (B) crosslinking agent and an aqueous solution of a (C) water soluble compound while heated. The obtained absorbents exhibit excellent absorbing ability even to a high concentrated salt solution and also are well biodegradable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.