Reduction of reticulation in gelatin-containing elements
US4590151A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1982 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Nov 29, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31768
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Reticulation caused by swelling with processing solutions in photographic elements is reduced for elements containing at least two contiguous gelatin-containing layers wherein the uppermost layer has a lateral swell coefficient at least 10% greater than the lower gelatin-containing layer before polymer addition and wherein said uppermost layer comprises an essentially non-diffusible vinyl polymer having reactive groups which crosslink by reaction with primary amine or secondary amine groups on gelatin or a water-soluble, non-diffusible amine containing vinyl polymer and a hardener for gelatin. These elements are particularly useful in photographic products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.