| 摘要 |
<p>A three-layer antireflective coating composition for a CR-39 or glass substrate comprising a middle layer containing titanium compounds sandwiched between top and bottom layers containing polysiloxane, wherein the top and bottom layers are titanium-free; and a process for preparing said antireflective coating with improved adhesion on a CR-39 or glass substrate. The thicknesses of each of said coating layers is in accordance with preselected equations, and the refractive indices of said coating layers satisfy the following requirements: nm > nb, nm > nt , and nb </= ns wherein nm is the refractive index of the middle layer, nb is the refractive index of the bottom layer, nt is the refractive index of the top layer, and ns is the refractive index of the CR-39 or glass substrate.</p> |
