Polymeric neutralizing layer with temporary crosslinks from an organo-metallic crosslinking agent
US4355091A · kind A · utility
3Cited by
5References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Aug 25, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Elements for use in a photographic diffusion transfer process comprising a sheet-like support having a polymeric acid neutralizing layer bonded thereto, wherein said polymeric acid layer is formed from a composition including a crosslinking agent that effects temporary crosslinks within said polymeric layer to promote resistance to aqueous interference during film unit assembly, but which readily hydrolyze under processing conditions so as to accommodate swelling of the polymeric layer in the presence of alkali processing composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.