申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP3348586A1
公开(公告)日:2018-07-18
A tube including a hydrogenated block copolymer (a), wherein
the hydrogenated block copolymer (a) includes, in a molecule, a polymer block mainly including a conjugated diene compound (C), a polymer block mainly including a conjugated diene compound (B), and a polymer block mainly including a vinyl aromatic compound (S),
a content of the polymer block mainly including the conjugated diene compound (C) is 1 to 30% by mass, a content of the polymer block mainly including the conjugated diene compound (B) is 69 to 98% by mass, and a content of the polymer block mainly including the vinyl aromatic compound (S) is 1 to 20% by mass in the hydrogenated block copolymer (a), and
the polymer block mainly including a conjugated diene compound (C) has a vinyl bond content before hydrogenation of 1 to 25 mol%, the polymer block mainly including the conjugated diene compound (B) has a vinyl bond content before hydrogenation of 60 to 100 mol%, and the hydrogenated block copolymer (a) has a ratio of hydrogenation of 80 mol% or more.
一种包括氢化嵌段共聚物(a)的管材,其中
氢化嵌段共聚物(a)在分子中包括主要包括共轭二烯化合物(C)的聚合物嵌段、主要包括共轭二烯化合物(B)的聚合物嵌段和主要包括乙烯基芳香化合物(S)的聚合物嵌段、
在氢化嵌段共聚物(a)中,主要包括共轭二烯化合物(C)的聚合物嵌段的含量为 1 至 30%(按质量计),主要包括共轭二烯化合物(B)的聚合物嵌段的含量为 69 至 98%(按质量计),主要包括乙烯基芳香族化合物(S)的聚合物嵌段的含量为 1 至 20%(按质量计),以及
主要包括共轭二烯化合物(C)的聚合物嵌段在氢化前的乙烯键含量为 1 至 25 摩尔%,主要包括共轭二烯化合物(B)的聚合物嵌段在氢化前的乙烯键含量为 60 至 100 摩尔%,氢化嵌段共聚物(a)的氢化比率为 80 摩尔%或以上。