MODIFIED BLOCK COPOLYMER, METHOD FOR PRODUCING MODIFIED BLOCK COPOLYMER, AND RESIN COMPOSITION
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP3623398A1
公开(公告)日:2020-03-18
A modified block copolymer according to the present invention is a modified block copolymer comprising a polymer block comprising a vinyl aromatic compound as a main constituent (A), a polymer block comprising a conjugate diene compound as a main constituent (B), and an atomic group having NHx (x = 0 to 2) (C). In the modified block copolymer, the polymer block comprising a conjugate diene compound as a main constituent (B) is a hydrogenated product, the atomic group having NHx (x = 0 to 2) (C) is contained in a side chain, and a compound forming the atomic group having NHx (x = 0 to 2) (C) satisfies the following condition:
Condition: when the compound forming the atomic group having NHx (x = 0 to 2) (C) is reacted with a maleic anhydride-modified group in a maleic anhydride-modified block copolymer, a MFR value at 230°C under a load of 2.16 kg of the modified block copolymer after the reaction is 0.1 times or more a MFR value at 230°C under a load of 2.16 kg of the maleic anhydride-modified block copolymer before the reaction.
根据本发明,改性嵌段共聚物是一种改性嵌段共聚物,包括以乙烯基芳香族化合物为主要成分的聚合物嵌段(A)、以共轭二烯化合物为主要成分的聚合物嵌段(B)和具有 NHx(x = 0 至 2)的原子团(C)。在改性嵌段聚合物中,由共轭二烯化合物作为主要成分(B)的聚合物嵌段是氢化产物,具有 NHx(x = 0 至 2)(C)的原子团包含在侧链中,形成具有 NHx(x = 0 至 2)(C)的原子团的化合物满足以下条件:
条件:当形成具有 NHx(x = 0 至 2)(C)的原子团的化合物与马来酸酐改性嵌段共聚物中的马来酸酐改性基团反应时,反应后在 230℃、负载 2.16 千克改性嵌段共聚物时的 MFR 值是反应前在 230℃、负载 2.16 千克马来酸酐改性嵌段共聚物时的 MFR 值的 0.1 倍或以上。