| 摘要 |
<p>PURPOSE: Provided is an acrylic resin composition which is especially useful as capstock materials for coextrusion over or lamination to structural plastics, especially polystyrene. CONSTITUTION: The acrylic composition for use as a capstock for structural plastics in composites formed by feedblock coextrusion, comprises a blend of an acrylic ester polymer and acrylic polymeric additive. The acrylic resin capstock composition comprises (a) 10 to 95% of polymethyl methacrylate or an C1 to C6 alkyl methacrylate/C1 to C8 alkyl acrylate copolymer based matrix; (b) 0 to 60% of modifiers; and (c) 5 to 40% of acrylic polymer additive which comprises 5 to 90% of methyl methacrylate, 10 to 95% C2 to C6 alkyl methacrylate, and 0 to 15% of methacrylic acid, acrylic acid or C1 to C5 ester thereof.</p> |
