申请人:Mitsui Chemicals, Inc.
公开号:EP1754724A1
公开(公告)日:2007-02-21
A novel olefin-based polymer has excellent thermal resistance, as well as excellent balance among various properties. The olefin-based polymer is an olefin-based polymer comprising 50 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties: i) the diad isotacticity is 70% or greater, ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5, and iii) the intrinsic viscosity [η] is 0.5 (dl/g) or greater.
一种新型烯烃基聚合物具有优异的耐热性,并能很好地平衡各种性能。这种烯烃基聚合物是一种烯烃基聚合物,其组成单元的重量百分比为 50%至 100%,由 4-甲基-1-戊烯衍生而来;组成单元的重量百分比为 0%至 50%,由至少一种烯烃衍生而来,这些烯烃选自具有 2 至 20 个碳原子的烯烃(4-甲基-1-戊烯除外),并具有以下特性:i) 二元异构性为 70% 或更高, ii) 通过凝胶渗透色谱法(GPC)测得的重量平均分子量(Mw/Mn)与数 量平均分子量(Mn)之比(Mw/Mn)在 1.0 至 3.5 之间,以及 iii) 通过凝胶渗透色谱法(GPC)测得的重量平均分子量(Mw/Mn)与数 量平均分子量(Mn)之比(Mw/Mn)在 1.0 至 3.5 之间。0 至 3.5,以及 iii) 本征粘度[η]为 0.5(dl/g)或更大。