| 摘要 |
PROBLEM TO BE SOLVED: To provide a modified PMMA(polymethyl methacrylate) improved in heat resistance, water absorption, etc., without impairing both thermoplasticity and high transparency inherent in PMMA. SOLUTION: The methacrylic resin composition essentially comprises (A) methyl methacrylate and/or its syrup and (B) a compound of the general formula(1)[ wherein, one of R<SB>1</SB>and R<SB>2</SB>is a group of the general formula(2) or (3)( wherein, R<SB>3</SB>to R<SB>5</SB>are each H, methyl or ethyl ) and the other being H or methyl ]. COPYRIGHT: (C)2006,JPO&NCIPI
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