| 摘要 |
NEW MATERIAL:Trisazo compounds of formula I or II, wherein Ar is a substd. or unsubstituted aromatic hydrocarbon or heterocyclic ring. USE:Photoconductive materials for electrophotographic materials. The compounds have excellent characteristics as an electric charge-generating material. PREPARATION:A hexazonium salt of formula II (wherein X is an anion) is reacted with a compd. of formula IV or V to obtain the desired compd. which is a colored crystal at room temp. Examples of the Ar group of the compds. of formulas I and II are arom. hydrocarbon rings such as benzene, naphthalene, anthracene and pyrene ; and hetrocyclic rings such as pyridine, furan, thiophene, indole, carbazole and dibenzofuran. Said Ar group may be substituted with lower alkyl, lower alkoxy, dialkylamino or halogen.
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