| 摘要 |
A rosin based intermediate softening point (ISPR) tackifier has a ring and ball softening point of from 35 to 60° C. A hot-melt pressure-sensitive adhesive (HMPSA) composition contains an elastomeric component, such as a blend of SIS and SB block copolymers, and a tackifying component comprising one or more rosin based ISPRs having a ring and ball softening point of from 35 to 60° C.
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