| 摘要 |
PURPOSE:To obtain plastic lens having high refractive index and good adhesion of coating film and reduced in discoloration by weather. CONSTITUTION:The objective plastic lens obtained by mixing a composition obtained by reacting 4,4'-bis(methacryloylthio)diphenyl sulfide with ethylene glycol dithioglycolate with styrene and azobisisobutyronitrile to afford a solution and pouring the solution into a mold for lens forming and heating the solution to give a plastic lens and providing an acrylic primer layer, silicone hard coat layer and refraction preventing layer of inorganic compound on the surface of the resultant plastic lens. |
