Anthraquinone compounds useful in photographic processes
US4110355A · kind A · utility
23Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1973 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | May 23, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B45/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a novel class of compounds which are capable of reacting in such a way as to form a new heterocyclic ring, and as a function of such reaction and ring formation to split off a color-providing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.