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POLYCARBONATE RESIN MATERIAL FOR MOLDING EYEGLASS LENSES AND OPTICAL ELEMENTS

机译:用于模制眼镜镜片和光学元件的聚碳酸酯树脂材料

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.
机译:一种由聚碳酸酯树脂组合物制成的眼镜镜片,该眼镜镜片包含(1)100重量份的聚碳酸酯树脂,(2)0.05至0.5重量份的(A)至少一种选自2-的紫外线吸收剂。 (2′-羟基-5′-甲基苯基)苯并三唑和2-(2′-羟基-5′-叔辛基苯基)苯并三唑,(3)0.01-0.3重量份的(B)至少一种紫外线吸收剂选自2-(3-叔丁基-5-甲基-2-羟基苯基)-5-氯苯并三唑,2,2'-亚甲基双[4-(1,1,3,3-四甲基丁基)-6- (2H-苯并三唑)-2-基苯酚]和2- [2-羟基-3,5-双(α,α,-二甲基苄基)苯基] -2H-苯并三唑,和(4)0.01至0.5重量份的( C)具有5至30个碳原子的四价至八价脂族多元醇与具有10至22个碳原子的脂族羧酸的全酯,其酸值为4至20 。;根据本发明,所述眼镜镜片由上述聚碳酸酯树脂制成n组合物具有成型耐热性,使得当通过挤出压缩成型形成透镜时,其能够长时间保持在高温下;当施加热历史例如再挤出以回收产品时,色调的变化很小。浪费和出色的可释放性。

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