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    • 16. 发明申请
    • TONER RESINS FOR ELECTRONIC COPYING PURPOSES
    • 电子复印用色调剂
    • WO2011003898A1
    • 2011-01-13
    • PCT/EP2010/059625
    • 2010-07-06
    • BASF SEFUJII, YoshihisaKANNO, HiroyasuYOSHINORI, ToriiKENJI, Ema
    • FUJII, YoshihisaKANNO, HiroyasuYOSHINORI, ToriiKENJI, Ema
    • G03G9/087C08G64/02
    • C08G64/0216C08G18/44C08G64/305G03G9/08755G03G9/08757G03G9/08795G03G9/08797
    • The present invention relates to a polycarbonate of number average molecular weight from 500 to 10000, glass transition point from 30 to 80°C and hydroxyl group value of 30 mg KOH/g or less and the use of said polycarbonate in a urethane modified resin used as an ingredient for the production of a toner or a developer for electronic copying purposes. The present invention also relates to a urethane modified resin obtainable by the reaction of a polymer mixture comprising a polycarbonate according to any of claims 1 to 5 and a polycondensed resin of glass transition point from 10 to 60°C and hydroxyl group value from 20 to 100 mg KOH/g with a polyfunctional isocyanate compound wherein the ratio of polycarbonate and polycondensed resin is from 20 : 80 to 80 : 20 by weight and the molar ratio of isocyanate groups in the polyisocyanate compound to hydroxyl groups in the polymer mixture is between 0.4 to 1.2 : 1 as well as a toner for electronic copying purposes comprising said urethane modified polycarbonate based resin and a developer comprising said toner and optionally a carrier.
    • 本发明涉及数均分子量为500〜10000,玻璃化转变温度为30〜80℃,羟基值为30mgKOH / g以下的聚碳酸酯以及所使用的聚氨酯改性树脂中使用的聚碳酸酯 作为用于生产用于电子复印目的的调色剂或显影剂的成分。 本发明还涉及通过包含根据权利要求1至5中任一项所述的聚碳酸酯和10至60℃的玻璃化转变温度的缩聚树脂和20至20的羟基值的聚合物混合物反应而获得的氨基甲酸酯改性树脂 使用多官能异氰酸酯化合物100mg KOH / g,其中聚碳酸酯和缩聚树脂的比例为20:80至80:20,聚异氰酸酯化合物中异氰酸酯基与聚合物混合物中羟基的摩尔比为0.4 至1.2:1,以及用于电子复印的调色剂,包括所述聚氨酯改性聚碳酸酯基树脂和包含所述调色剂和任选的载体的显影剂。