| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a white epoxy resin composition having excellent formability, uniformly white surface of the molding article which gives a cured product having high reflectivity and excellent optical characteristics regardless of being exposed in heat or short-wavelength incident light over a long period of time, and to provide an opto device product using the resin composition. <P>SOLUTION: The white epoxy resin composition comprises (A) an epoxy resin, (B) an acid anhydride curing agent, (C) a curing accelerator, (D) silicone oil, and (E) titanium oxide powder, wherein the difference between the refractive index of the cured product comprising the (A) epoxy resin, the (B) acid anhydride curing agent and the (C) curing accelerator and the refractive index of the (D) silicone oil is an absolute value of 0.10-0.20, 5% weight loss temperature of the (D) silicone oil is ≥210°C, a content of the (E) titanium oxide powder is 1-50 mass%. The opto device product using the resin composition is also provided. <P>COPYRIGHT: (C)2013,JPO&INPIT |
