| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive with good initial tackiness and good adhesion at low temperature by adding a base-containing nontacky polymer compatible with the tacky polymer component and a crosslinking agent to a carboxylic group-containing tacky polymer having excellent low-temperature characteristics, and to provide a marking sheet using the adhesive. <P>SOLUTION: The pressure-sensitive adhesive composition comprises a carboxylic group-containing (meth)acrylic tacky polymer (1) having a weight average molecular weight of less than 800,000 and a glass transition temperature of -100°C to -30°C, and an amino group-containing (meth)acrylic non-tacky polymer (2) having a weight average molecular weight of from 30,000 to 100,000 and a glass transition temperature of 20°C to 90°C. The polymer (2) is present in an amount of no less than 1 part by mass and less than 20 parts by mass on a basis of 100 parts by mass of the polymer (1). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
