申请人:JAPAN as Represented by DIRECTOR GENERAL OF AGENCY OF INDUSTRIAL
SCIENCE AND TECHNOLOGY
公开号:EP1520862A2
公开(公告)日:2005-04-06
A coupled butadiene polymer composition is provided
characterized by comprising:
(i) 0 to 90 parts by weight of a polymer (I) which is a homopolymer of butadiene or a copolymer of butadiene witha monomer copolymerizable therewith, and has at least 50% by weight of butadiene units, and in which the content of butadiene units having a cis bond in the total butadiene units is at least 50%, the number average molecular weight (Mn) is in the range of 1, 000 to 10,000,000, and a relationship represented by the formula:log(Mw/Mn) < 0.162 × log(Mw) - 0.682 is satisfied between the weight average molecular weight (Mw) and the ratio (Mw/Mn); and
(ii) 100 to 10 parts by weight of a polymer (II) composed of at least two molecules of the above-mentioned polymer (I), bonded through a coupling agent.
提供了一种耦合丁二烯聚合物组合物
其特征是包括
(i) 0 至 90 份(重量)聚合物(I),其为丁二烯均聚物或丁二烯与可与之共聚的单体的共聚物,且具有至少 50%(重量)的丁二烯单元,其中具有顺式键的丁二烯单元在丁二烯单元总量中的含量至少为 50%,数均分子量(Mn)在 1,000 至 10,000,000 之间,且由式:log(Mw/Mn)< 0.162 × log(Mw) - 0.682 的关系;以及
(ii) 100 至 10 重量份的聚合物 (II),该聚合物 (II) 由至少两个上述聚合物 (I) 分子通过偶联剂结合而成。