Terpolymer of oxyalkyene acrylates, acrylamides and quaternary monomers
US4981936A · kind A · utility
31Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Apr 14, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Apr 14, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/286
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water soluble terpolymers based on (1) an acrylamide or acrylamide derivative, (2) a cationic vinyl monomer and (3) a hydrophilic vinyl monomer of the formula CH.sub.2 C(R)C(O)O(CH.sub.2 (CH.sub.2).sub.m O).sub.n E where R and E are each hydrogen or alkyl, m is an integer from 1 to 3 and n is an integer from 1 to 25 are useful flocculants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.