发明申请
US20070299168A1 Spectacle Lens and Polycarbonate Resin Molding Material for Optical Moldings 有权
眼镜镜片和聚碳酸酯树脂用于光学成型的树脂成型材料

  • 专利标题: Spectacle Lens and Polycarbonate Resin Molding Material for Optical Moldings
  • 专利标题(中): 眼镜镜片和聚碳酸酯树脂用于光学成型的树脂成型材料
  • 申请号: US11667098
    申请日: 2005-10-28
  • 公开(公告)号: US20070299168A1
    公开(公告)日: 2007-12-27
  • 发明人: Jiro ArikiSeiichi Tanabe
  • 申请人: Jiro ArikiSeiichi Tanabe
  • 优先权: JP2004-321741 20041105
  • 国际申请: PCT/JP05/20253 WO 20051028
  • 主分类号: G02C7/02
  • IPC分类号: G02C7/02 C08K5/103 C08K5/3475 C08K5/49 C08L69/00
Spectacle Lens and Polycarbonate Resin Molding Material for Optical Moldings
摘要:
A spectacle lens made of a polycarbonate resin composition which comprises (1) 100 parts by weight of a polycarbonate resin, (2) 0.05 to 0.5 part by weight of (A) at least one ultraviolet light absorber selected from the group consisting of 2-(2′-hydroxy-5′-methylphenyl)benzotriazole and 2-(2′-hydroxy-5′-tert-octylphenyl)benzotriazole, (3) 0.01 to 0.3 part by weight of (B) at least one ultraviolet light absorber selected from the group consisting of 2-(3-tert-butyl-5-methyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2,2′-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotraizole)-2-ylphenol] and 2-[2-hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, and (4) 0.01 to 0.5 part by weight of (C) a full ester of a tetravalent to octavalent aliphatic polyhydric alcohol having 5 to 30 carbon atoms and an aliphatic carboxylic acid having 10 to 22 carbon atoms, having an acid value of 4 to 20. According to the present invention, the spectacle lens made of the above polycarbonate resin composition has molding heat resistance which enables it to be kept at a high temperature for a long time when the lens is formed by extrusion compression molding, a small change in hue when heat history such as re-extrusion is applied so as to recycle product waste and excellent releasability.
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