公开(公告)号：US20230331894A1

公开(公告)日：2023-10-19

申请号：US18028843

申请日：2021-09-28

申请人： Asahi Kasei Kabushiki Kaisha

发明人： Takanobu Ishizaka ,  Yoshifumi Araki ,  Shinichi Sekikawa ,  Shogo Sumitani ,  Hideki Yamasaki ,  Atsushi Yasumoto

IPC分类号： C08F297/04 ,  C08K3/36

CPC分类号： C08F297/048 ,  C08K3/36

摘要： The present invention provides a molded bale of a rubber-like block copolymer, satisfying the following requirements 1 to 6: Requirement 1: a content of a vinyl aromatic monomer unit is 9% by mass or more and 50% by mass or less; Requirement 2: a proportion of a vinyl aromatic monomer block is 3% by mass or more and less than 30% by mass; Requirement 3: an iodine value is 3 to 250; Requirement 4: a proportion of an ethylene structure is 3% by mass or more; Requirement 5: a weight average molecular weight is in a range of 80,000 to 1,000,000; and Requirement 6: at least one block at a molecular end is a specific block I or block II.