公开(公告)号：US20170037175A1

公开(公告)日：2017-02-09

申请号：US15304773

申请日：2015-04-17

Applicant: NIPPON A&L INC.

Inventor： Kazuhiro ISHIGAKI ,  Kiyoshi IKAWA ,  Taisuke YUKAWA

IPC: C08F255/02 ,  C08L25/12 ,  C08L69/00 ,  C08F255/10

Abstract: Provided is a graft copolymer (A) obtainable by graft-polymerizing, in the presence of 30 to 80 parts by mass of an ethylene-based polymer (a), an aromatic vinyl-based monomer (b) and, if necessary, another vinyl-based monomer (c) copolymerizable with the aromatic vinyl-based monomer (b) in a total amount of 20 to 70 parts by mass (provided that the sum of the components (a), (b) and (c) is 100 parts by mass), in which the ethylene-based polymer (a) has a density of 0.900 g/cm3 or more and less than 0.966 g/cm3, a number average molecular weight of 10,000 to 50,000, and a molecular weight distribution of 5 to 15, and the proportion of the ethylene-based polymer (a) molecules having a molecular weight of 10,000 or less is 5.5% or more.

Abstract translation: 本发明提供一种接枝共聚物（A），其可以通过在30〜80质量份的乙烯系聚合物（a），芳香族乙烯基类单体（b）和必要时，另外的乙烯基系聚合物 （c）可与芳族乙烯基类单体（b）共聚合的总量为20〜70质量份（c）成分（a），（b）和（c）的总和为100份 ，其中乙烯类聚合物（a）的密度为0.900g / cm 3以上且小于0.966g / cm 3，数均分子量为10,000〜50,000，分子量分布为5〜 15，分子量为10,000以下的分子的乙烯类聚合物（a）的比例为5.5％以上。