ACRYLIC PRESSURE SENSITIVE ADHESIVES COMPOSITION HAVING SUPERIOR RESIDUAL STRESS RELAXATION EFFECT

摘要

PURPOSE: Provided is an acrylic adhesive composition which minimizes formation of residual stress and is excellent in initial adhesion strength, permanence adhesion strength, maintenance force and cutting property. CONSTITUTION: The composition contains i) 100pts.wt. of an acrylic copolymer produced by copolymerizing a) 20-98.4pts.wt. of methacrylic acid ester monomer having C4-C12 alkyl group, b) 1-30pts.wt. of methacrylic acid ester having long chain structure of high flexibility, c) 1-30pts.wt. of methaacrylic acid ester having homopolymer glass transition temperature of bulky structure not less than normal temperature, d) 0.1-5pts.wt. of a vinyl monomer containing hydroxyl group, and e) 0.5-10pts.wt. of alpha, beta-unsaturated carboxylic acid monomer; ii) 0.01-5pts.wt. of a crosslinking agent; and iii) 0.01-2pts.wt. of a silane coupling agent.