Photographic element and coating composition
US5614360A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1994 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Dec 16, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/35
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic element and an aqueous coating composition for providing a layer to a photographic element are disclosed. The coating composition comprises gelatin in a concentration greater than about 6% by weight, and a palladium complex having the structure: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently selected from hydrogen, alkyl, alkenyl, aryl or alkaryl, the alkyl, alkenyl, aryl, or alkaryl optionally being substituted with a hydroxy, sulfonate, amino or ammonium group; and wherein any two of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 can be bonded to form a ring; Z.sup.1 and Z.sup.2 independently represent the number of carbon atoms necessary to form a 5 or 6 membered ring, inclusive of palladium, wherein the carbon atoms may be substituted with hydrogen, sulfonate, alkyl, alkenyl, aryl or alkaryl, the alkyl, alkenyl, aryl, or alkaryl optionally being substituted with a hydroxy, halogen, sulfonate, amino or ammonium group; and n is -2 to 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.