| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for decreasing the adhesive force of an adhesive film that is suitably applicable in the field of adhesive agent that is required to have re-peeling property. SOLUTION: In the method for decreasing the adhesive force of the adhesive film, the adhesive film that includes (A) 5 to 100 pts.mass of syndiotactic 1,2-polybutadiene having more than 70% of 1,2-bond content and 5 to 50% of crystallinity, (B) 0 to 95 pts.mass of thermoplastic polymer [wherein (A)+(B)=100 pts.mass] and (C) 0 to 10 pts.mass of a photopolymerization initiator based on the total 100 pts.mass of (A)+(B) is irradiated with radioactive rays. COPYRIGHT: (C)2007,JPO&INPIT
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