| 摘要 |
PURPOSE: An adhesive composition is provided to have excellent wettability, to not cause mealing phenomenon, etc and to have excellent performance in peeling property, thereby usable for protecting surface of various electronic components. CONSTITUTION: An adhesive composition for protective film comprises an acrylic polymer of which weight average molecular weight is 700,000-2,000,000 and glass transition temperature is (-45) - (-30) °C, and a polyfunctional crosslinking agent. An elastic modulus after curing is 0.95×10 - 2.0×10 Pa. the acrylic polymer comprises 90-99.9 parts by weight of a (meth)acrylic acid ester monomer, and 0.1-10 parts by weight of a copolymerizable monomer with a cross-linkable functional group which have a polymerized shape. The polyfunctional crosslinking agent is an isocyanate crosslinking agent, an epoxy crosslinking agent, aziridine crosslinking agent or metal chelate crosslinking agent. |
