Abstract
Three types of reworkable dimethacrylates having hemiacetal ester moieties were synthesized. Thermal curing and thermal decomposition of cured dimethacrylates were investigated. When the films of reworkable dimethacrylates containing α,α-azobisisobutyronitrile were baked at 120℃ under N2, the films became insoluble in solvents. After the subsequent baking above 180℃, the films became soluble in solvents. The reaction mechanism was studied by FT－IR and MS spectroscopy.
