Influence of Photoinitiator's Architecture on the Shrinkage of Acrylic PSA

This paper presents a new class of saturated and unsaturated photoinitiators, with different structures, containing benzophenone groups, and describes their influence on the shrinkage of solvent-based acrylic pressure-sensitive adhesives (PSAs) coated on PVC film, after UV crosslinking. The main emphasis is on the influence of the new class of copolymerrizable benzophenone photoinitiators on the viscosities and molecular weights of various UV doses from a UV lamp.