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    • 7. 发明授权
    • Optical film and method for producing same
    • 光学膜及其制造方法
    • US08247026B2
    • 2012-08-21
    • US12293990
    • 2007-03-19
    • Fumiaki NishinoKatsunori NishiuraKazuyuki FukudaToshihiko TakakiTakehiro Miyashita
    • Fumiaki NishinoKatsunori NishiuraKazuyuki FukudaToshihiko TakakiTakehiro Miyashita
    • B05D5/06
    • G02B5/0278C03C17/008C03C2218/113G02B5/0242Y10T428/24355
    • Disclosed is a method for producing an optical film composed of a transparent resin and a metal oxide, which film has high light transmittance and light diffusion property even it is formed thin. Also disclosed is such an optical film. Specifically disclosed is a method for producing an optical film having a total light transmittance of not less than 70% and a haze value of not less than 20%, which comprises a step (A) wherein a metal compound to form a metal oxide through a sol-gel reaction is subjected to a sol-gel reaction in a solvent; a step (B) for providing a solution containing a transparent resin as a solute; a step (C) for mixing the mixture obtained in the step (A) with the solution obtained in the step (B); and a step (D) wherein the mixture obtained in the step (C) is applied or spread over a substrate or container and then heated for evaporating the solvent, thereby forming a film thereon.
    • 公开了一种由透明树脂和金属氧化物构成的光学膜的制造方法,该膜即使形成得较薄,也具有高透光性和光扩散性。 还公开了这种光学膜。 具体公开了一种制造光透过率为70%以上且雾度值为20%以上的光学膜的制造方法,其特征在于,包括通过以下方式形成金属氧化物的金属化合物的工序(A) 溶胶 - 凝胶反应在溶剂中进行溶胶 - 凝胶反应; 提供含有透明树脂作为溶质的溶液的工序(B) 将步骤(A)中获得的混合物与步骤(B)中获得的溶液混合的步骤(C); 和步骤(D),其中将步骤(C)中获得的混合物施加或铺展在基材或容器上,然后加热以蒸发溶剂,从而在其上形成膜。