Freeze-thaw stable polyacrylamide emulsions
US4785036A · kind A · utility
1Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | May 27, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/1539
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific substituted succinic anhydrides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.