Abstract: The present invention provides a pressure-sensitive adhesive composition, including: an acrylic copolymer and a crosslinking agent. The acrylic copolymer is a reaction product of a mixture of the following monomers: a first alkyl (meth)acrylate, an alkyl group in the first alkyl (meth)acrylate having at least 6 carbon atoms; a second alkyl (meth)acrylate, an alkyl group in the second alkyl (meth)acrylate having 1 to 5 carbon atoms; and a vinyl carboxylic acid, the weight ratio of the vinyl carboxylic acid to the mixture being 4% to 5%. The crosslinking agent is an organometallic chelating agent. The weight ratio of the organometallic chelating agent to the mixture is 0.05% to 0.25%. The pressure-sensitive adhesive composition does not contain an effective amount of a tackifier. The present invention further provides a pressure-sensitive adhesive solution, a pressure-sensitive adhesive tape, and a method for preparing the same.

Abstract: The present invention provides an acrylic damping adhesive. The acrylic damping adhesive comprises a crosslinked structure of a carboxy-containing acrylic polymer with a glass transition temperature less than or equal to ?20° C. and a carboxy-containing acrylic polymer with a glass transition temperature ranging from 20° C. to 50° C. The acrylic damping adhesive according to technical solutions of the present invention exhibits double damping peaks in a rheological curve, and thus has a wider damping temperature range (the damping temperature range is greater than or equal to 50° C., and preferably greater than or equal to 90° C.), a higher frequency response of damping, and higher system stability.