Color photographic material
US4206278A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Apr 12, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D277/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Color photographic material is provided which comprises at least one silver halide emulsion layer containing a yellow color coupler of the formula ##STR1## in which G represents a yellow coupler radical bonded via the active methine group to the heterocyclic ring, Z represents --CO-- or --SO.sub.2 -- and M represents a substituent and A represents the non-metallic atoms necessary to complete a five-membered saturated heterocyclic ring. The new two-equivalent yellow couplers lead due to their improved reactivity (high maximum density), minimal fog and high fastness to light and outstanding spectral properties of the dyestuffs formed therefrom to a color photographic material of advantageous properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.