Cross-linked, water-swellable polymer microgels
US4172066A · kind A · utility
255Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1977 |
| Grant date | Oct 23, 1979 |
| Priority date | — |
| Expiry date | Sep 26, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Discrete, spheroidal microgels of a water-swollen or water-swellable, cross-linked polymer such as cross-linked polyacrylamide are particularly useful as thickening agents for aqueous dispersions to be subjected to high shear and as agents for reducing the permeability of porous structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.