Process for the production of high molecular weight copolymers of diallyl ammonium monomers and acrylamide monomers in solution
US5200482A · kind A · utility
9Cited by
7References
16Claims
0Family size
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Key dates
| Filing date | Dec 30, 1991 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Dec 30, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-soluble, high molecular weight, linear copolymers of a diallyl ammonium monomer and an acrylamide monomer of various cationicities are prepared by copolymerization of a major portion of the acrylamide monomer via stage-addition in a solvent solution and adding a chain transfer agent at the conclusion of said copolymerization to prevent branching and cross-linking from occurring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.