Process for producing a water-soluble vinyl polymer
US4376021A · kind A · utility
4Cited by
4References
4Claims
0Family size
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Inventors
Key dates
| Filing date | Mar 18, 1981 |
| Grant date | Mar 8, 1983 |
| Priority date | — |
| Expiry date | Mar 18, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/903
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water-soluble vinyl polymer is produced by polymerizing a water-soluble vinyl monomer in the presence of a catalyst or under the action of ultraviolet rays to prepare a polymer having a degree of polymerization of at least 95%, adjusting the water content of the system containing said polymer to be within the range of from 15 to 30%, and irradiating said system with ionizing radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.