Pyrylium dyes for electrophotographic composition and element
US3938994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jun 18, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/067
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to organic compounds useful as sensitizers for organic photoconductive compositions having one of the following formulas: ##SPC1## ##SPC2## Wherein: R.sup.1 represents a hydrogen atom, an alkyl radical having 1 to about 15 carbon atoms, a substituted alkyl radical wherein the alkyl moiety contains from 1 to about 15 carbon atoms and wherein the substituents are phenyl radicals or alkoxy radicals containing 1 to about 4 carbon atoms, a phenyl radical, and a substituted phenyl radical having as substituents alkyl radicals having 1 to about 15 carbon atoms or alkoxy radicals having 1 to about 4 carbon atoms; R.sup.2 represents R.sup.1 and a radical having the following formula: ##EQU1## X represents a hetero atom selected from the group consisting of an oxygen and a sulfur atom; and Z.sup.- is an anionic function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.