Patent ID: 7432326

Claim:
Acrylate-based pressure-sensitive adhesive comprising a polymer blend having (a) at least a first component K c which comprises a first acrylate block copolymer having two chemically distinguishable, covalently interlinked acrylate polymer blocks, the two polymer blocks independently of one another each being a homopolymer block of a first monomer or a copolymer block of a second monomer and a comonomer, the first monomer of the homopolymer block and the second monomer of the copolymer block being identical or different from one another, and the two polymer blocks being in microphase-separated regions and each having a softening temperature of between −125 and 19° C., and (b) at least one second component L D , which is a second acrylate block copolymer, distinguishable from component K c , having two chemically distinguishable, covalently interlinked acrylate polymer blocks, with the features specified under (a) the acrylate polymer blocks having softening temperatures of between −125 and 19° C. component K c and component L D both being diblock copolymers.