| 摘要 |
NEW MATERIAL:Hydrazone derivatives of formula I wherein Ar is (substd.) phenyl; R is lower alkyl, benzyl, (substd.) phenyl. EXAMPLE:Compd. of formula III. USE:Charge transfer substances (which form a photosensitive layer together with a charge generating substance, has proper dark place charging potential and rapidly dissipates charges by light irradiation) for use in electrophotographic material. PREPARATION:A hydrazine derivative of formula III is reacted with an equimolar amount of an aldehyde compd. of formula IV in an org. solvent such as lower alcohol, cyclic ether or N,N-dimethylamide.
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