| 摘要 |
PURPOSE: To obtain a synthetic resin spectacle lens for correcting a visual acuity which has small specific gravity as the lens, a light weight, and excellent transparency and weather resistance. CONSTITUTION: At the mixing first step, 49 to 59 pts.wt. of 2,2- bis-[4-(methacryloxyethoxy)phenyl]propane, 13 to 23 pts.wt. of styrene, 23 to 33 pts.wt. of trimethylolpropanetriacrylate as main raw materials are added with 0.1 to 5 pts.wt. of 2,4-diphenyl-4-methyl-1-pentene as polymerization adjustor and 0.01 to 0.2 pt.wt. of 2-(2'-hydroxy-5'-t-octylphenyl)-pensotriazone, and A liquid is prepared. At the mixing second step, 0.01 to 3 pts.wt. of sole or a plurality of suitable catalysts are added to the A liquid, and resin composition liquid is formed. At the injection step, the composition liquid is injected in a lens mold, and polymerization cured. At the releasing step, the polymerization cured synthetic resin lens is released from the lens mold frame. |
