The present invention is a resin composition comprising a transparent resin, and modified inorganic particles obtained by surface-modifying inorganic particles with a modifier, the transparent resin having a saturated water absorption at 37° C. of 0.015 to 0.25 wt %, the inorganic particles having an average particle size of 20 nm or less, and having a refractive index larger than that of the transparent resin by 0.40 or more, a modification ratio of the modified inorganic particles being 15 to 40 wt %, and the modifier being a compound represented by the formula (1) below. Here, R1 represents a hydrocarbon group having 12 to 18 carbon atoms, and X represents a functional group that forms a bond to the surface of the inorganic particles, or an atomic group that comprises the functional group. Also disclosed are a resin formed article and an optical part.
R1—X (1)
本发明是一种
树脂组合物,包括透明
树脂和通过用改性剂对无机颗粒进行表面改性而得到的改性无机颗粒,透明
树脂在 37° C 时的饱和吸
水率为 0.015 至 0.25 wt %,无机颗粒的平均粒径为 20 nm 或更小,折射率比透明
树脂的折射率大 0.40 或更大,改性无机颗粒的改性率为 15 至 40 wt %,改性剂为下式 (1) 所代表的化合物。在此,R1 代表具有 12 至 18 个碳原子的烃基,X 代表与无机颗粒表面形成键合的官能团或包含官能团的原子团。此外,还公开了一种
树脂成型品和一种光学部件。
R1-X (1)