Ampholytic polymers and polymeric microemulsions
US5380444A · kind A · utility
12Cited by
24References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/917
- WIPO fieldEnvironmental technology
- 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 paper deinking sludges and deinking process waters are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.