Polyelectrolyte composite of polyvinyl alcohol derivatives
US3959406A · kind A · utility
5Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Feb 15, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/916
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polyelectrolyte composite of polyvinyl alcohol derivatives; which comprises: an ionically bonded composite of a partial acetal of polyvinyl alcohol modified with diethoxyethyl trimethyl ammonium ion or a partial aminoacetal of polyvinyl alcohol modified with aminoacetal, with a carboxymethyl polyvinyl alcohol or a partial sulfate of polyvinyl alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.