A novel graft polymer useful in various uses that has a polyolefin backbone having polyolefin segments excellent in moldability can be obtained by homopolymerizing a novel polyolefin macromonomer or polymerizing the novel polyolefin macromonomer in the coexistence of other olefins depending on need, wherein the macromonomer has at the terminal of its polyolefin chain a vinyl group whose &agr;-position may be substituted, and the macromonomer can be efficiently obtained by a method, for example, successively carrying out i) a step of producing a polyolefin having a hydroxyl group at the terminal of the polyolefin chain and ii) a step of converting the terminal hydroxyl group of the polyolefin in chain into an acryloyl group, a methacryloyl group or a styryl group.
一种新型的移植聚合物,可用于各种用途,具有聚烯烃骨架,其聚烯烃段具有优异的成型性能,可以通过聚合新型聚烯烃大分子单体或在需要时在其他烯烃的共存下聚合新型聚烯烃大分子单体来获得。其中,大分子单体在其聚烯烃链的末端具有一个
乙烯基,其α-位可以被取代,通过一种方法可以高效地获得大分子单体,例如连续进行i)生成在聚烯烃链末端具有羟基的聚烯烃的步骤和ii)将聚烯烃的末端羟基转化为
丙烯酰基、甲基
丙烯酰基或
苯乙烯基的步骤。