SYNERGISTIC INITIATOR COMPOSITIONS FOR THE VISIBLE LIGHT FABRICATION AND POSTCURE OF STEREOLITHOGRAPHIC OBJECTS

摘要

SYNERGISTIC INITIATOR COMPOSITIONS FOR THE VISIBLE LIGHT CURE OF ETHYLENICALLY UNSATURATED COMPOSITIONS A liquid composition which is photopolymerizable with visible light comprises a photopolymerizable ethylenically unsaturated liquid which is polymerizable by free-radical polymerization containing, based on the weight of the photopolymerizable ethylenically unsaturated material contained therein: (1) from about 0.1% to about 5% of a photoreducible phthalein dye; (2) from about 0.5% to about 10% of an aliphatic tertiary amine; and (3) from about 1% to about 8% of a ketonic photoinitiator.