Method for producing copolymer of diallylamine and sulfur dioxide
US9006383B2 · kind B2 · utility
3Cited by
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5Claims
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Key dates
| Filing date | May 13, 2011 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | May 13, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a process for producing a copolymer of a diallylamine and sulfur dioxide which copolymer has a higher molecular weight and water-solubility than that obtained by a conventional production process by copolymerizing the diallylamine and sulfur dioxide in the presence of an acid and a radical polymerization initiator in a polar solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.