Photographic elements containing certain acylacetanilide couplers in combination with development inhibitor releasing couplers
US5451492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1994 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Mar 17, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a photographic element comprising a support bearing a blue light sensitive silver halide emulsion layer containing an acylacetanilide yellow image dye-forming coupler having formula I: ##STR1## wherein: R.sub.a is a substituted or unsubstituted alkyl, alkoxy, or aryloxy group; PA1 R.sub.b is a substituted or unsubstituted alkyl or aryl group; PA1 R.sub.c is hydrogen or a substituted or unsubstituted alkyl group; PA1 R.sub.1 is a substituent; PA1 R.sub.2 is selected from the group consisting of halogen, trifluoromethyl, and substituted or unsubstituted alkoxy and aryloxy; PA1 each R.sub.3 is bonded at the 4- or 5- position relative to the anilino nitrogen and is independently a substituent selected from the group consisting of halogen, alkoxycarbonyl (--CO.sub.2 R), carbamoyl (--CONRR'), sulfonate (--OSO.sub.2 R), sulfamoyl (--SO.sub.2 NRR'), sulfonyl (--SO.sub.2 R), trifluoromethyl, cyano, and sulfonamido (--NRSO.sub.2 R'), in which each R and R' is independently hydrogen or a substituent; PA1 q is 1 or 2; PA1 R.sub.4 and R.sub.5 are independently hydrogen or an alkyl group; and PA1 R.sub.6 is a substituent; PA1 n is an integer from 0 to (3-q); wherei…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.