Cationic polysaccharides and reagents for their preparation
US5227481A · kind A · utility
14Cited by
24References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Apr 9, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cationic polysaccharide derivatives are prepared by reacting a polysaccharide with a polycationic reagent having one polysaccharide reactive group and at least two cationic groups. Suitable reagents include polycationic alkyl, aryl, alkaryl, cycloaliphatic, or heterocyclic amines, some of which are novel compositions. The polycationic polysaccharide derivatives prepared from these reagents are useful in the manufacture of paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.