Provided is a polymer having a sharp melting peak and allowing easy adjustment of the melting peak temperature. Specifically provided is a polymer comprising: two or more kinds of constitutional units containing an alkyl group having 14 or more and 30 or less carbon atoms, wherein the proportions of the number of the two or more kinds of constitutional units containing an alkyl group having 14 or more and 30 or less carbon atoms are each 20% or more, with respect to 100% of the total number of all constitutional units containing an alkyl group having 14 or more and 30 or less carbon atoms, and an enthalpy of fusion of the polymer observed within a temperature range of 10°C or higher and lower than 60°C in differential scanning calorimetry is 30 J/g or more.
本发明提供了一种
聚合物,该
聚合物具有尖锐的熔峰,且易于调节熔峰温度。具体而言,该
聚合物包括两种或两种以上含有
碳原子数分别为 14 个或 14 个以上和 30 个或 30 个以下的烷基的结构单元,其中两种或两种以上含有
碳原子数分别为 14 个或 14 个以上和 30 个或 30 个以下的烷基的结构单元的数量占所有含有
碳原子数分别为 14 个或 14 个以上和 30 个以下的烷基的结构单元总数的比例均为 20%或 20%以上,且在差示扫描量热法中观察到
聚合物在高于 10°C 和低于 60°C 的温度范围内的熔融焓为 30 焦耳/克或 30 焦耳/克以上。