Controlled polymerization of dimethyldiallylammonium halides by the use of alkali metal or ammonium bisulfites or metabisulfites
US4092467A · kind A · utility
7Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1977 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Feb 9, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F26/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An alkali metal or ammonium bisulfite or metabisulfite added incrementally to a polymerizing aqueous solution of dimethyldiallylammonium halide enables control of the intrinsic viscosity of the resulting polymer within desired limits without adverse effect on monomer conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.