Process for the production of high molecular weight copolymers of diallylammonium monomers and acrylamide monomers in an aqueous dispersed phase
US5171783A · kind A · utility
12Cited by
4References
15Claims
0Family size
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Key dates
| Filing date | Mar 11, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Mar 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F226/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-soluble, high molecular weight, linear copolymers of a diallyl ammonium monomer and an acrylamide monomer are prepared by emulsion copolymerization of a major portion of the acrylamide monomer via stage-addition, and the addition of a chain transfer agent at the conclusion of said copolymerization to prevent branching and cross-linking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.