| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical molding having low photo-elastic birefringence, favorable transparency/hue/strength and showing negative orientation birefringence when it is stretched and oriented. <P>SOLUTION: The optical molding is obtained by molding a resin composition containing the following copolymer (A) and showing a melt mass flow rate (MFR) of 0.1 to 3 g/10 minutes measured at 200°C under 49 N load based on JIS K7210. The copolymer (A) is a styrene-(meth)acrylate copolymer having styrene monomer units of 70 to 10 mass% and (meth)acrylate monomer units of 30 to 90 mass% in the ratio of structural monomers. <P>COPYRIGHT: (C)2008,JPO&INPIT |
