Organic azo pigment sensitizers for photoconductive layers
US4018606A · kind A · utility
16Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1974 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | May 3, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/366
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A class of organic pigments having the formula ##STR1## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR2## ring; R.sup.1, R.sup.2, and R.sup.3 are hydrogen, halogen, alkoxy, NO.sub.2, alkyl, SO.sub.3 H or alkali metal salts thereof, ##STR3## and COOH or alkali metal salts thereof, and R.sup.2 and R.sup.3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR4## where M is alkyl, alkali or alkaline earth metal are useful as sensitizers for photoconductive compositions in electrophotographic processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.