Ampholytic polymers and polymeric microemulsions
US5512184A · kind A · utility
2Cited by
19References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Sep 8, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/917
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Quatemary 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 am 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.