| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an acrylic thermoplastic resin composition which comprises a polyvinyl acetal resin and a methacrylic resin, has characteristics such as high transparency, high surface hardness, high rigidity, excellent weather resistance, heat resistance and thermal stability, has good toughness, and can stably give high quality moldings. <P>SOLUTION: The acrylic thermoplastic resin composition comprises a methacrylic resin (A) and a polyvinyl acetal resin (B) obtained by acetalizing polyvinyl alcohol resin having a viscosity-average polymerization degree of 500-2,000 in an acetalization degree of 70-88 mol% and having an alkali metal or alkaline earth metal content of 0.1-50 ppm. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
