Highly absorbent polymeric compositions derived from flour
US4045387A · kind A · utility
20Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1976 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Jul 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/922
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Absorbent polymeric compositions are prepared by graft polymerizing acrylonitrile onto flour or other starch-containing substrates and then subjecting the flour-polyacrylonitrile graft copolymers to alkaline saponification. Compositions prepared from gelatinized flour absorb from 1800-3000 times their weight of deionized water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.