Process for crosslinking hydrophilic colloids
US3958050A · kind A · utility
5Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Apr 10, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates a process for crosslinking hydrophilic colloids, especially gelatine. The colloid is crosslinked with a water-soluble organic crosslinking agent which is allowed to act in a system consisting of at least two colloid layers. At least one layer contains the crosslinking agent and at least one layer which is free from crosslinking agents contains an aprotic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.