PURPOSE: The title sunlight-curable resin composition prepared by mixing an acrylic prepolymer with an acrylic crosslinking monomer and a specified photosensitizer.
CONSTITUTION: A photocurable resin composition is prepared by mixing 20W 80wt% (meth)acryl group-containing prepolymer[e.g., novolak epoxy acrylate diluted with trimethylolpropane triacrylate (SP4010, Showa Kobunshi)]with 80W20wt% (meth)acryl group-containing crosslinking monomer (e.g., hydroxyethyl methacrylate) and adding 1W20pts.wt. photosensitizer to 100pts. wt. above mixture. As the above photosensitizer, there is used ethylanthraquinone, alone or as a combination with at least one member selected from the group consisting of benzil, p-dimethylaminobenzaldehyde and chlorothioxanthone.
IKENO SHINOBU
NAKAMURA MASASHI
YAMAUCHI TOSHIYUKI
