Recycled acrylic pressure-sensitive adhesive production method and recycled acrylic pressure-sensitive adhesive tape

Abstract

A method for producing a recycled acrylic pressure-sensitive adhesive by regenerating a base polymer from an acrylic pressure-sensitive adhesive is provided. A recycled acrylic pressure-sensitive adhesive tape including a recycled acrylic pressure-sensitive adhesive obtained by the production method is provided. A recycled acrylic pressure-sensitive adhesive production method according to an embodiment of the present invention includes the steps of: (I) reacting an acrylic pressure-sensitive adhesive, a liquid having a Hansen solubility parameter of 31 or less, and an alkaline compound to produce a hydrophilic polymer; and (II) reacting the hydrophilic polymer and an alcohol (A2) to produce a recycled acrylic polymer.

Dependencies are inferred from the claim text.