METHOD FOR PRODUCING PHOTOCURABLE RESIN

摘要

PROBLEM TO BE SOLVED: To provide a photocurable resin which yields products excellent in tack-free property and hardness and has excellent storage stability. SOLUTION: The photocurable resin is obtained by Michael addition reaction of a multifunctional acrylic ester represented by trimethylolpropane with aβ-ketoester represented by acetylacetone under a condition of 60°C-140°C temperature. The reaction is continued till the viscosity change in the reaction system is substantially unobserved, and the obtained photocurable resin having a disubstitutedβ-ketoester group is used as an essential component. COPYRIGHT: (C)2005,JPO&NCIPI