Cationic polymers
US4983698A · kind A · utility
2Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1988 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Nov 30, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/56
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved cationic water-soluble polymer is prepared from acrylamide, a cationic monomer such as dimethylaminoethyl methacrylate dimethylsulfate quaternary, and a waste stream which is produced as a result of the transesterification reaction between dialkylamino alcohols and acrylates which is used to prepare the cationic monomer. The polymers are especially useful in dewatering applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.