Water-absorbent starch copolymerizates
US4115332A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Jun 20, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F290/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-absorbent, starch copolymerizates are prepared by copolymerizing an ethylenically unsaturated starch with other ethylenically unsaturated monomers which contain water-attractant groups or precursors of water-attractant groups. The water-absorbent starch copolymerizates may be easily prepared into the desired configuration for a particular end-use or combined with other substrates or carriers. The unpolymerized starch and monomers or precursors thereof may be applied or incorporated into a suitable carrier or substrate (e.g., cellulosic materials such as textiles, papers, etc.) and copolymerized in situ to provide a composite article of unitary construction with the water-absorbent starch copolymerizate permanently bonded or affixed thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.