| 摘要 |
PROBLEM TO BE SOLVED: To provide a tackifier/adhesive composition which has high thermal aging resistance when a composition is produced, has high adhesive force and high holding force at a room temperature and a low temperature, has high releasability over time after adhesion, has low adhesion rise, has little adhesive residue, and has high discoloration resistance.SOLUTION: A tackifier/adhesive composition contains 30 mass% or more and 90 mass% or less of a component (a): a partially hydrogenated block copolymer having a vinyl aromatic monomer unit and a conjugated diene monomer unit, and 10 mass% or more and 70 mass% or less of a component (b): a polymer selected from polyisobutylene, butyl rubber and polybutene. A content of the vinyl aromatic monomer unit in the component (a) is 10 mass% or more and 20 mass% or less. A hydrogenation rate in a double bond based on the conjugated diene monomer unit in the component (a) is 15 mol% or more and less than 80 mol%.SELECTED DRAWING: None |
