ALICYCLIC EPOXY RESIN, PROCESS FOR PRODUCING THE SAME, COMPOSITION THEREOF, CURED EPOXY RESIN, AND USE OF ALICYCLIC EPOXY RESIN COMPOSITION

摘要

Alicyclic epoxy resins having high transparency, suited for application to optical materials, coating materials, etc., and solid at normal temperature are provided. These alicyclic epoxy resins meet the following requirements (a) to (d): (a) epoxy equivalent is 500 to 10,000; (b) nuclear hydrogenation rate is not lower than 96%; (c) softening temperature as measured by the ring and ball method of JIS-K-7234 is 40 to 200°C; and (d) light transmittance measured at a wavelength of 400 nm is not less than 90%.