PHOTOINITIATOR COMPOSITIONS CONTAINING DISULFIDES AND PHOTOHARDENABLE COMPOSITIONS CONTAINING THE SAME

摘要

Photoinitiator compositions comprising a compound which absorbs actinic radiation and directly or indirectly generates free radicals and a disulfide compound are disclosed. The photointiator compositions have reduced sensitivity to oxygen and are preferably used in association with photographic imaging systems containing photosensitive microcapsules. Particularly preferred absorber compounds are ionic dye-counter ion complexes.