PRESSURE-SENSITIVE ADHESIVE COMPOSITIONS AND PRESSURE-SENSITIVE ADHESIVE TAPE

摘要

PROBLEM TO BE SOLVED: To provide an acrylic pressure-sensitive adhesive having sufficient tackiness and resistance to primer treatment.SOLUTION: A pressure-sensitive adhesive composition comprises a particulate polymer of a monomer mixture comprising (a) 45-79.5 mass% of an alkyl (meth)acrylate monomer with an alkyl group having 8 to 14 carbon atoms; (b-1) 20-50 mass% of an alkyl (meth)acrylate monomer with an alkyl group having 15 to 24 carbon atoms and being a linear alkyl group; and (c) 0.5-5 mass% of a monoolefinically unsaturated monomer having a ketone group. The percentages are based on the total amount of the (a), (b-1) and (c) monomers.