| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low-viscosity pressure-sensitive adhesive composition preparable at a high solid concentration, excellent in bonding characteristics at high temperatures and good in heat resistance. SOLUTION: This pressure-sensitive adhesive composition comprises a polymer which is a polymer of a monomer containing >=50 wt.% of an acrylic monomer represented by the general formula CH2=C(R1)COOR2 (R1 is hydrogen or methyl group; R2 is a 2-14C alkyl group) and having >=60,000 number-average molecular weight, >=100,000 weight-average molecular weight and >=50% introduction ratio of functional groups into molecular chain terminals as a principal ingredient and a tackifier resin having alcoholic hydroxyl groups in an amount of 10-70 pts.wt. based on 100 pts.wt. of the principal ingredient.
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