Patent ID: 8519076

Claim:
A method for producing a UV-crosslinkable polyacrylate pressure-sensitive adhesive composition, the method comprising: hydraulically filling a reactor of a planetary roller extruder with a reaction mixture for producing the polyacrylate pressure-sensitive adhesive composition, wherein the planetary roller extruder comprises a plurality of roller barrels in series wherein the polyacrylate pressure-sensitive adhesive composition comprises a polyacrylate having copolymerized photoinitiator units, an average molecular weight M w (weight average) of 100 000 to 3 000 000 g/mol, and being produced by a free-radical solvent-free polymerization conducted in the reactor of the hydraulically filled planetary roller extruder wherein a hole is located in a connecting flange between the roller barrels of the planetary roller extruder, and adding further substances, selected from the group consisting of initiators, monomers and polymerization regulators, along a length of the reactor via the hole located in the connecting flange.