Photographic element containing improved stabilizer
US6348306B1 · kind B1 · utility
1Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2000 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/39296
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith(a) a pyrazolotriazole dye-forming coupler;(b) a cyclic aminosulfone first stabilizer; and(c) a sulfonamide compound co-stabilizer free of aromatic substituents andhaving a melting point of less than 150° C. The image dye formed by the coupler exhibits improved dye light stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.