Granulated color photographic bleaching agent and its preparation
US5053321A · kind A · utility
8Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Jun 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Color photographic bleaching agent containing, in the form of a granulate having an average particle diameter of from 150 to 3000 .mu.m, an iron (III) complex or an iron (III) complex salt and a rehalogenating agent is dust free and freely pourable, will keep indefinetely and dissolves in water at 25.degree. C. within 45 seconds to form a solution ready for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.