| 摘要 |
PURPOSE:To obtain the titled resin plate without losing the antistatic properties by washing with water or friction nor deteriorating thermal and mechanical properties, by polymerizing an acrylic or methacrylic acid ester containing a specific sulfonic acid salt present with methyl methacrylate, etc. in a specific composition. CONSTITUTION:1-15pts.wt. sulfonic acid salt expressed by the formula [R<1> is H or methyl; R<2> is H or (substituted) hydrocarbon; A is 2-4C (substituted) alkylene; n is a number average value and 1-35; M is alkali metal or ammonium, etc.] is present and contained in 100pts.wt. monomer consisting of methyl methacrylate monomer or a monomer consisting essentially of methyl methacrylate or a partial polymer (syrup) thereof, and the resultant mixture is then fed to a cell consisting of two panes of tempered glass and polymerized to afford the aimed cast plate.
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