Photographic element containing a benzolylacetanilide DIR coupler
US6130031A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention comprises a photographic element, comprising a support bearing at least one silver halide emulsion and at least one benzoylacetanilide yellow dye-forming DIR coupler of structure I, below: ##STR1## wherein: each R.sub.1 is individually selected from the group consisting of halogen atoms and alkyl and alkoxy groups; PA2 m is 0, 1, 2 or 3; PA2 R.sub.2 is selected from the group consisting of halogen atoms and alkoxycarbonyl, aryloxycarbonyl, carbonamido, sulfonamido, sulfamoyl, alkylsulfonyl, arylsulfonyl, sulfonyloxy, acyloxy and cyano groups and each is in the para position or in either meta position relative to the NH group of the anilide; PA2 X is a hydrogen or halogen atom or an alkyl or alkoxy group; PA2 R.sub.3 is a halogen atom or an alkyl group and may be in the para position or either meta position relative to the NH group of the anilide; PA2 n is 0 or 1; and PA2 R.sub.4 is an alkyl group with 3 to 10 carbon atoms or a phenyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.