abstract |
PURPOSE: To shorten drastically a curing and molding time, by a method wherein after ultraviolet-curing liquid resin is cast into a cavity of a transparent silicone rubber mold whose composition is specific, the resin is cured by applying ultraviolet rays to the cast liquid resin. n CONSTITUTION: A transparent silicone rubber mold is molded by performing mold making through RTV silicone rubber, which is transparent from an optical point of view, on the basis of a master. After casting of ultraviolet-curing liquid resin within a cavity of the transparent silicone rubber mold, liquid resin is cured by applying ultraviolet rays to the transparent silicone mold. The ultraviolet-curing liquid resin is obtained by compounding 2-benzyl-2- dimethylamino-1-(4-morpholinophenlyl)-butane-1 of a photopolymerization initiator with a mixed monomer of diacrylate of an additive of ethylene oxide of bisphenol A and acrylic acid ester of phenyl glycidyl etcher. n COPYRIGHT: (C)1991,JPO&Japio |