Ampholytic polymers and polymeric microemulsions
US5650465A · kind A · utility
13Cited by
20References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Quaternary dialkylaminomethyl polymers derived from (alk)acrylamide and about 1 to about 15 mole percent ethylenically unsaturated anionic comonomer wherein the resulting ampholytic polymer has a standard viscosity of at least about 2.1 cps are disclosed. Processes for the preparation of these polymers and their use in flocculating suspended material in a variety of aqueous dispersions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.