Patent ID: 11884812
Assignee: KURARAY CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC A  C  B | IPC B  C

Claim 0:
1. A hydrogenated block copolymer, comprising:
polymer blocks (A1) and (A2) each comprising an aromatic vinyl compound-derived structural unit, and
polymer blocks (B) and (C) each comprising a conjugated diene compound-derived structural unit,
wherein at least one of the polymer blocks (B) and (C) is present between the polymer blocks (A1) and (A2),
the hydrogenated block copolymer has
a total content of the polymer blocks (A1) and (A2) of from 5 to 30% by mass,
a 3,4-bond and 1,2-bond content in the polymer block (B) of from 1 to 40% by mole,
a 3,4-bond and 1,2-bond content in the polymer block (C) of from 50 to 100% by mole, and
a mass ratio [(C)/{(B)+(C)}] of the polymer block (C) to the sum of the polymer blocks (B) and (C) of from 26/100 to 63/100.