Water-absorbent starches
US4155888A · kind A · utility
66Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1978 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Apr 17, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Water-absorbent starch products may be prepared by simultaneously drying and polymerizing an aqueous media containing starch, ethylenic unsaturated monomer and free-radical initiator. Without necessitating further refining or chemical modification, effective water-absorbent, drum-dried products essentially free from water-soluble salts and free-radical initiator contaminants and containing a high level of functional water-attractant groups may be directly manufactured. If desired, the water-absorbent starch products may be further refined to increase the water-absorbent properties of the starch polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.