| 摘要 |
PROBLEM TO BE SOLVED: To provide pressure-sensitive adhesive sheets which have high adhesion, also have excellent properties of preventing terminals from peeling, and diffuse very small amounts of formaldehyde and toluene. SOLUTION: The pressure-sensitive adhesive sheets have at least a pressure-sensitive adhesive layer of a water dispersion type acrylic polymer and a water dispersion type acrylic pressure-sensitive adhesive comprising an emulsion comprising a rosin-based or terpene-based pressure-sensitive adhesion-imparting resin, wherein the ratio of butyl acrylate and 2-ethylhexyl acrylate to the whole monomer components composing acrylic polymer in the water dispersion type acrylic polymer is 85 wt.% or more, the ratio of 2-ethylhexyl acrylate to butyl acrylate [2-ethylhexyl acrylate/butyl acrylate] (weight ratio) is 5/95 to 60/40, and the emulsion containing the pressure-sensitive adhesion-imparting resin is prepared by using a material other than aromatic hydrocarbon-based organic solvents. COPYRIGHT: (C)2010,JPO&INPIT |
