申请人:NIPPON ZEON CO., LTD.
公开号:EP0924256A1
公开(公告)日:1999-06-23
The invention relates to polybutadiene rubber wherein a molecular weight distribution curve of the rubber as determined by gel permeation chromatography (GPC) has 2 peaks attributable to a high molecular weight component and a low molecular weight component, a peak top molecular weight of the high molecular weight component and a peak top molecular weight of the low molecular weight component fall within ranges of from 100,000 to 1,500,000 and from 10,000 to 50,000, respectively, a ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn), Mw/Mn, falls within a range of from 4.5 to 14.5, and the content of a cis-1,4 structure is at least 80 wt.%, a high-impact aromatic vinyl resin composition comprising the polybutadiene rubber, and a preparation process of the resin composition.
本发明涉及聚丁二烯橡胶,其中通过凝胶渗透色谱法(GPC)测定的橡胶分子量分布曲线有两个峰,分别属于高分子量组分和低分子量组分、高分子量组分的峰顶分子量和低分子量组分的峰顶分子量分别在 100,000 至 1,500,000 和 10,000 至 50,000 的范围内,重量平均分子量(Mw)与数量平均分子量(Mn)之比 Mw/Mn 在 4.5 至 14.5 的范围内,以及高分子量组分的峰顶分子量与低分子量组分的峰顶分子量在 10,000 至 50,000 的范围内。5 至 14.5 的范围内,且顺式-1,4 结构的含量至少为 80 wt.%。