Method of making and a photographic element containing bleach accelerator silver salts
US5380629A · kind A · utility
0Cited by
10References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Mar 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/7448
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention provides a process for preparing a bleach accelerator silver salt dispersion by precipitating a salt of a bleach accelerating compound and a silver salt wherein the vAg is maintained at a predetermined level during the precipitation. This invention further provides a photographic element containing a dispersion of grains of a bleach accelerator silver salt wherein the grains are isomorphic or derived from needle or platelet isomorphic crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.