A polypropylene type aqueous dispersion comprising the following components (a) to (c):
(a) a polypropylene type polymer and/or a modified polypropylene type polymer 100 parts by weight
(b) a surfactant 1 to 100 parts by weight, and
(c) water 100 to 1,000 parts by weight, wherein the component (a) has a main chain having the following features (1) and (2) and dispersion particles in the dispersion have an average particle size of at most 0.5 µm,
Feature (1) when observing a peak derived from a carbon atom of a methyl group in a propylene unit chain part comprising a head-to-tail bond by 13C-NMR and fixing a chemical shift of a peak top at a peak attributable to pentad expressed by mmmm to 21.8 ppm, a ratio (S1/S) of an area S1 of a peak of a peak top at 21.8 ppm to a total area S of peaks at from 19.8 ppm to 22.1 ppm is at least 10% and at most 60%, and when an area of a peak (mmmr) of a peak top at 21.5 to 21.6 ppm is expressed as S2, 4+2S1/S2>5, and
Feature (2) a content ratio (mol ratio) of propylene unit (A): other olefin unit (B) is from 100:0 to 90:10.
一种聚
丙烯型
水性分散体,包括以下成分(a)至(c):
(a) 聚
丙烯类聚合物和/或改性聚
丙烯类聚合物 100 份(重量比
(b) 表面活性剂 1 至 100 份(按重量计),和
(c)
水 100 至 1,000 份(重量比),其中组分(a)的主链具有以下特征(1)和(2), 分散液中的分散微粒的平均粒径不超过 0.5 微米、
特征(1)当用 13C-NMR 观察由头对尾键组成的
丙烯单元链部分中的甲基的碳原子所产生的峰,并将峰顶的
化学位移固定在以 mmmm 表示的归属于 pentad 的峰的
化学位移为 21.8 ppm,21.8 ppm处峰顶的峰面积S1与19.8 ppm至22.1 ppm处峰的总面积S之比(S1/S)至少为10%,最多为60%,当21.5至21.6 ppm处峰顶的峰面积(mmmr)用S2表示时,4+2S1/S2>5,以及
特征(2)
丙烯单元(A):其他烯烃单元(B)的含量比(摩尔比)为 100:0 至 90:10。