Pressure-sensitive adhesive tape

摘要

Disclosed is a pressure-sensitive adhesive tape comprising: a sheet backing composed of polybutadiene foam having a substantially closed cell foam structure; and a layer of pressure-sensitive adhesive composition provided on a surface of the sheet backing. The pressure-sensitive adhesive composition in the present invention comprises: (A) an acrylic copolymer prepared from a mixuture composing: (i) at least one acrylic ester monomer having an alkyl radical containing, on average, 4 to 12 carbon atoms as an alcohol residue; and (ii) polymerizable unsaturated carboxylic acid monomer; (B) a polymer having a hydrolyzable silicon-containing radical; and (C) a polyfunctional isocyanate compound. The adhesive composition of the present invention needs no silanol condensation catalyst.