| abstract |
PROBLEM TO BE SOLVED: To provide a liquid radiation-curable composition suitable for hybrid (that is, cationic and free radical) polymerization when treated by an additive shaping apparatus utilizing an actinic radiation source having a peak spectral intensity in a UV/vis region. A cationically curable constituent for cationic polymerization, which further comprises a cycloaliphatic epoxy component and an oxetane component, and a free radical curable constituent for free radical polymerization, Further, a UV/vis optical element that includes a cationic photoinitiator, a vinyl ether diluent monomer, and a photoinitiating package that includes a free radical photoinitiator, and emits radiation having a peak spectral output at 400 nm. Liquid UV/vis ray curable composition, wherein the cycloaliphatic epoxy component exhibits specific properties when exposed to a surface dose of 2 mW/cm 2 of liquid UV/vis ray curable composition. .. [Selection diagram] Fig. 11 |