| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin molding which is suitable for an optical component with high light transmittance and a small linear expansion coefficient. SOLUTION: This manufacturing method for the resin molding is characterized as follows: a liquid polymerizable composition, which contains components A-C, is injected into a mold composed of a material, at least one surface of which allows the transmission of ultraviolet rays, irradiated with the ultraviolet rays, and taken out from the mold after being polymerized until a degree of polymerization reaches 40-60%, while the temperature of the polymerizable composition is kept at 60°C or lower; and polymerization can be completed by heating the composition, taken out from the mold, at 150°C or higher. The component A is a polyfunctional (meth) acrylate composition with at least four (meth) acryloyl groups; the component B is a photopolymerization initiator; and the component C is a thermopolymerization initiator. COPYRIGHT: (C)2006,JPO&NCIPI |
