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    • 75. 发明公开
    • POSITIVE CHARGE CONTROL AGENT, METHOD FOR PRODUCTION OF THE AGENT, AND ELECTROPHOTOGRAPHIC TONER USING THE AGENT
    • POSITIVES LADUNGSSTEUERUNGSMITTEL,PRODUKTIONSVERFAHRENDAFÜRUND ELEKTROPHOTOGRAPHISCHER TONER DAMIT
    • EP1921509A1
    • 2008-05-14
    • EP07742191.5
    • 2007-04-23
    • FUJIKURA KASEI CO., LTD.
    • ISHIMOTO, TakayukiYATABE, Shinji
    • G03G9/097
    • G03G9/09741G03G9/081G03G9/08711G03G9/08755G03G9/08782G03G9/08791G03G9/0904G03G9/0918
    • Provided are a positive charge controlling agent which is excellent in compatibility with and dispersibility in a binder resin, prevented from discoloring, excellent in chargeability, and reduced in the content of organic compounds having low boiling points, thereby giving no strong odor; a process for producing the same; and an electrophotographic toner which exhibits excellent chargeability and colorability, and the controlled production of VOC. The positive charge controlling agent includes a copolymer obtained by copolymerizing a styrene monomer (M1), a (meth)acrylic acid alkyl ester monomer (M2), and a quaternary ammonium salt (M3) of a dialkylaminoalkyl(meth)acrylate monomer, wherein a copolymerizing ratio (mass%) of the monomers, (M1) + (M2) : (M3), is 99.5 : 0.5 to 65 : 35, and at least one end thereof is RCOO- or RO-, where R is an alkyl group, an aryl group, an aralkyl group, or an alicyclic group.
    • 提供一种正极电荷控制剂,其在粘合剂树脂中的相容性和分散性优异,防止变色,充电性优异,并且降低了沸点低的有机化合物的含量,从而不产生强烈的气味; 其制造方法; 以及显示出优异的带电性和着色性的电子照相调色剂以及VOC的受控制造。 正电荷控制剂包括通过共聚苯乙烯单体(M1),(甲基)丙烯酸烷基酯单体(M2)和二烷基氨基烷基(甲基)丙烯酸酯单体的季铵盐(M3))而获得的共聚物,其中 单体(M1)+(M2):(M3)的共聚比(质量%)为99.5:0.5〜65:35,其至少一端为RCOO-或RO-,其中,R为烷基 芳基,芳烷基或脂环族基。