Optical diffusive resin compositions are presented, capable of yielding optical diffusive moldings that are superior not only in rigidity and dimensional stability but also in heat resistance, optical transmissivity and optical diffusivity, as well as optical diffusive moldings molded by using them. Such optical diffusive resin compositions contain for 100 mass parts of a thermoplastic polymer material 0.1-10 mass parts of organosilicone fine particles of a specific kind comprising polysiloxane cross-linking structures, each particle having a hollow hemispherical shape as a whole, having a cross-sectional shape with an inner minor arc, an outer minor arc which covers it and ridge lines connecting their ends.
本发明提出的光学扩散
树脂组合物,不仅在刚性和尺寸稳定性方面,而且在耐热性、光学透射率和光学扩散率方面,都能生产出优异的光学扩散模塑件,以及使用这些组合物模塑的光学扩散模塑件。这种光学扩散
树脂组合物每 100 质量份的热塑性聚合物材料中含有 0.1-10 质量份由聚
硅氧烷交联结构组成的特定种类的有机
硅微粒,每个微粒整体呈中空的半球形,其横截面形状具有内小圆弧、覆盖其上的外小圆弧以及连接其两端的脊线。