| 摘要 |
PROBLEM TO BE SOLVED: To provide a light guide plate having small hygroscopicity, high strength, high transparency and high heat resistance. SOLUTION: The heat-resistant light guide plate comprises 20-80 parts by mass of a styrene-(meth)acrylate copolymer resin (A) comprising 50-20 mass% of a styrenic monomer, 50-80 mass% of a (meth)acrylate monomer and 0-10 mass% of a vinyl monomer copolymerizable with these monomers and 80-20 parts by mass of a styrene-maleic anhydride type copolymer (B) comprising 70-90 mass% of styrene, 10-30 mass% of an unsaturated dicarboxylic acid anhydride monomer and 0-10 mass% of a vinyl monomer copolymerizable with these monomers. COPYRIGHT: (C)2005,JPO&NCIPI
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