Sulfonamido phenol scavenger compounds
US4205987A · kind A · utility
11Cited by
13References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Nov 15, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic elements, film units and processes are described wherein certain ballasted di-2,5-sulfonamidophenols are used to scavenge oxidized electron transfer agents in color image transfer materials. The scavenger compounds can be located in an emulsion layer, a dye image-providing material layer or an interlayer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.