High standard viscosity quaternary mannich microemulsions
US6025432A · kind A · utility
8Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | Jul 23, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Jul 23, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Inverse microemulsions are disclosed wherein the dispersed micelles containing water and an (alk)acrylamide-based polymer substituted with at least one mole percent of quaternized tertiary aminomethyl groups i.e. the aqueous phase, contain from about 20 percent to about 40 percent, by weight, of polymer solids and the microemulsion has a Standard Viscosity of at least about 3.3 cps. A method of making said microemulsions and use thereof to dewater dispersions of suspended solids are also taught.
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