1,2,4,5-benzoylenebis(anthraquinone[1,2-d]imidazole) compounds
US4908457A · kind A · utility
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34Claims
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Key dates
| Filing date | Dec 7, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Dec 7, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0659
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,2,4,5-benzoylenebis(anthraquinone[1,2-d]imidazole) compounds represented by following general formula (1) or ##STR1## wherein R and R' each are hydrogen atom, a halogen atom, hydroxyl group, a lower alkyl group, a lower alkoxy group or an aryl group which may be substituted and m and n each are an integer of 1 or 2, and photosensitive members for electrophotography having a photosensitive layer containing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.