- Positively-chargeable charge control agent and toner for developing electrostatic images
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Positively-chargeable charge control agent and toner for developing electrostatic images that comprises a coloring agent, a resin for toners, and said positively-chargeable charge control agent. The positively-chargeable charge control agent comprises a metal complex salt or metal complex of an aromatic dicarboxylic acid having at least 1 perfluoroalkyl group, wherein the central atom of the metal complex salt or metal complex is a trivalent metal.
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- Naphthyridine derivatives
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Heterocyclic compounds of the formula: STR1 wherein the pyrroline ring and the symbols X1 and X2 together form an unsubstituted or substituted isoindoline nucleus, or a 6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, 6,7-dihydro-5H-pyrrolo[3,
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- Naphthyridine derivatives
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Compounds of the formula: STR1 wherein one of the symbols =X-- represents =N-- and the other three each represent a group STR2 in which Y represents hydrogen, halogen, alkyl, alkoxy, cyano or nitro, at least two of the symbols representing hydrogen, Z represents hydrogen, halogen, alkyl, alkoxy, trifluoromethyl or nitro, and (i) n represents zero and R represents hydrogen, alkyl, alkenyl, alkynyl, hydroxyalkyl or phenyl, or (ii) n represents 1 and R represents alkyl, hydroxyalkyl or phenyl, are new compounds possessing pharmacological properties; they are particularly active as tranquilizers and anti-convulsant agents.
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