Influence of the unsaturated benzophenone photoinitiators on shrinkage of acrylic pressure-sensitive adhesives

摘要

Thi communicate presents a new class of the unsaturated photoinitiators containing benzophenone groups and their influence on shrinkage of acrylic pressure-sensitive adhesives (PSA) coated on polyvinyl chloride (PVC) film. The main emphasis is given to the influence of this new class of copolymerizable photoinitiators on shrinkage process of acrylic PSA after cross-linking with UV-lamp. Moreover, the influence of various factors such as cross-linking time and cocnentration of copolymerizable photoinitiators on very relevant PSA properties such as viscosity, molecualr weight and shrinkage on PVC film were discussed.