| abstract |
(57) Abstract: A UV crosslinkable acrylic hot melt PSA exhibiting a narrow molecular weight distribution. SOLUTION: The polyacrylate-based pressure-sensitive adhesive has an average molecular weight Mw (weight average) of from 100,000 to 600,000 g / mol, a polydispersity of not more than 3.0, and a copolymerized photoinitiator unit. Let The method for producing a UV-crosslinkable polyacrylate-based pressure-sensitive adhesive exhibiting a polydispersity of 3.0 or less includes a radical polymerization step of generating a polymer from the monomer mixture, Units including copolymerizable photoinitiator The polymerization step is regulated by the presence of at least one chemical compound comprising X as S, O or N as a polymerization regulator. |