Photographic material with a temporary barrier layer comprising a chill-gelable polymer
US4504569A · kind A · utility
12Cited by
11References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1983 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Aug 26, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polymer comprising polymerized N-alkyl substituted acrylamide and a polymerized crosslinking monomer wherein the polymer has a solubility parameter from about 13 to 16 at 25.degree. C., is useful as a temporary barrier layer between reactants in photographic products. The barrier layer is particularly useful as a process timing layer in color image transfer film units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.