| 摘要 |
The purpose of the present invention is to prevent the decrease in the weight average molecular weight of an acrylic adhesive layer. A method for producing an acrylic adhesive tape comprises the steps of: (a) producing an acrylic polymer A from a photopolymerizable monomer composition comprising an acrylic monomer and a photopolymerization initiator to prepare a polymer syrup containing the acrylic polymer A and an unreacted portion of the acrylic monomer; (b) mixing an adhesiveness-imparting polymer produced from an adhesiveness-imparting polymer formation composition comprising an acrylic monomer, a photopolymerization initiator and a thiol-type chain transfer agent, a monofunctional acrylic monomer containing an epoxy group and/or an isocyanate group and the polymer syrup together to prepare an adhesive agent coating solution; (c) applying the adhesive agent coating solution onto a release film base to form an adhesive agent coating film; and (d) irradiating the adhesive agent coating film with an active energy ray to produce an acrylic polymer B from an unreacted portion of the acrylic monomer contained in the adhesive agent coating film, thereby forming an acrylic adhesive layer. |
