The present invention provides a cation-modified linear copolymer which comprises, within the molecule thereof, 95 to 85 mole % of an ethylene structural unit, 0.1 to 10 mole % of an ester structural unit represented by general formula (II), 0.1 to 6 mole % of an acrylic or methacrylic acid structural unit and 1 to 12 mole % of an amide structural unit represented by general formula (IV) and has a weight-average molecular weight of 1,000 to 100,000. When incorporated in thermoplastic resins, it shows good compatibility and brings about good mechanical properties.
本发明提供了一种阳离子改性线性共聚物,其分子中包含 95 至 85 摩尔%的
乙烯结构单元、0.1 至 10 摩尔%的通式(II)代表的酯结构单元、0.1 至 6 摩尔%的
丙烯酸或
甲基丙烯酸结构单元以及 1 至 12 摩尔%的通式(IV)代表的酰胺结构单元,其重量平均分子量为 1,000 至 100,000。当加入热塑性
树脂中时,它具有良好的相容性和机械性能。