Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents
US4276364A · kind A · utility
14Cited by
1References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1980 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jun 23, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/48561
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel 3,3-disubstituted acylhydrazinophenylthiourea nucleating agents are disclosed as well as silver halide photographic emulsions and elements containing silver halide grains capable of forming an internal latent image having the nucleating agents adsorbed to the surface of the silver halide grains. Imaging processes in which these materials participate are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.