Gel formation by polymer crosslinking
US4040484A · kind A · utility
27Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1975 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Nov 6, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition of matter comprising water, a polymer capable of being crosslinked by polyvalent metal cations, a reducible species containing said polyvalent metal in a higher oxidation state, and a reducing agent selected from among KI, MnCl.sub.2, Mn(NO.sub.3).sub.2, and K.sub.4 Fe(CN).sub.6 which composition is capable of forming a gel by crosslinking is provided. A method is also provided for in situ gel formation using this crosslinking composition. In one of its embodiments a method is provided for increasing the rate of gel formation by the addition of H+ ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.