Photographic element containing water soluble bis Au(I) complexes
US5945270A · kind A · utility
12Cited by
7References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1997 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a silver halide photographic element comprising a support and a silver halide emulsion layer, the emulsion layer comprising an organomercapto Au(I) complex having the formula EQU (M--SOL).sub.n --A--S--Au--S--A--(SOL--M).sub.n !M wherein M is a cationic counterion; PA1 SOL is a solubilizing group: PA1 A is a substituted or unsubstituted divalent organic linking group; PA1 and n is 1 to 4 and wherein the compound is symmetrical. It further relates to a method of preparing a silver halide emulsion utilizing said organomercapto Au(I) complexes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.