Light-sensitive silver halide color photographic material
US5215877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1991 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Aug 21, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/30535
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are a yellow coupler represented by the following formula (I) and a light-sensitive silver halide color photographic material having at least one silver halide emulsion layer on a support, which comprises a two-equivalent yellow coupler represented by the following formula (I) being contained in at least one of the above silver halide emulsion layers: ##STR1## wherein R.sub.1 represents an alkyl group or a cycloalkyl group; R.sub.2 represents an alkyl group, a cycloalkyl group or an aryl group; R.sub.3 represents a straight unsubstituted alkyl group having 8 to 20 carbon atoms; X represents >NR.sub.4, --O-- or --S(O).sub.n --; Y represents >NR.sub.5 or ##STR2## where R.sub.4 and R.sub.5 each represent an alkyl group, a cycloalkyl group or an aryl group; and R.sub.6 and R.sub.7 each represent hydrogen atom, --OR.sub.8, ##STR3## and --S(O).sub.P R.sub.8 (where R.sub.8 represents an alkyl group, a cycloalkyl group and an aryl group; R.sub.9 represents hydrogen atom, an alkyl group, a cycloalkyl group or an aryl group; R.sub.8 and R.sub.9 may be bonded mutually to form a hetero ring; and p represents an integer of 0 to 2); R.sub.6 and R.sub.7 may be bonded mutually to form a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.