Photographic materials with novel cyan dye forming couplers
US5045442A · kind A · utility
16Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Sep 27, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Photographic materials contain cyan dye forming couplers having good ethyl acetate solubility. The coupler contains a coupling off group with an asymmetric carbon atom. Manufacture of the material is simplified and in some instances the activity of the coupler is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.