A resin composition for an electrophotographic toner comprises an ethylene series high polymer (Y) and an ethylene series polymer (X) prepared from 100 parts of a bifunctional ethylene series unsaturated monomer and 0.01-10 parts by weight of a substance having three or more peroxide groups in the molecule and/or a substance having one or more unsaturated functional groups and one or more peroxide groups in the molecule, Mw/Mb (Mw is weight-average molecular weight, and Mb is weight-average molecular weight between crosslinking points) of said polymer (X) being from 2 to 99, and the Mw of said polymer (X) being 50,000 or less. This resin composition has an excellent balance of physical properties and particularly excellent offset resistance and toner strength.
一种用于电子照相调色剂的
树脂组合物包括
乙烯系列高聚物(Y)和
乙烯系列聚合物(X),
乙烯系列聚合物(X)由 100 份双官能
乙烯系列不饱和单体和 0.所述聚合物 (X) 的 Mw/Mb(Mw 为重均分子量,Mb 为交联点之间的重均分子量)为 2 至 99,而所述聚合物 (X) 的 Mw 为 50,000 或以下。这种
树脂组合物具有极佳的物理性能平衡,特别是具有极佳的耐胶印性和调色剂强度。