| 摘要 |
PURPOSE:To improve the resistance to wear, hot water and chemicals and dyeability by forming a hard coating film constituted by using specific raw materials on the surface of a plasitc lens. CONSTITUTION:A hard coating film consisting of 1 or >=2 kinds among the org. silicon compd. expressed by the formula (R<1> is 1-4C org. groups such as hydrocarbon group, vinyl group, methacryloxy group, epoxy group, etc., R<2> is 1- 4C hydrocarbon group, R<3> is 1-5C hydrocarbon group, alkoxyalkyl group or H atom, l is 0-1) as a compnent A, colloidal silica having 1-100mmu grain size as a component B, polyhydric alcohol or polybasic carboxylic acid or polybasic carboxylic anhydride as a component C and MgClO4 as a component D is formed on the surface of a plastic lens. The pot life as a coating is extended by adding MgClO4 which is the component D as a curing catalyst to the components A, B, C in the above-mentioned way. A coated fiml is formed by using such coating, by which the lens having good resistance to wear, hot water, chemicals and weather and dyeability is obtd. |
