METHACRYL RESIN MOLDED BODY AND MANUFACTURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a methacryl resin molded body excellent in shock resistance and having no whitening by heating or drawing molding and a manufacturing method therefor.SOLUTION: There is provided a manufacturing method of a methacryl resin molded body by injecting a syrup containing a polymerizable component consisting of 70 to 99 mass% of an unsaturated monomer (I) containing methyl methacrylate and 1 to 30 mass% of a (meth)acrylic block copolymer (II) consisting of a (meth)acrylic polymer block (a) having a polymerizable functional group containing a partial structure (1) represented by the following general formula (1) and a (meth)acrylic polymer block (II) having no polymerizable functional group and a polymerization initiator (III) into a mold and polymerizing it. (1), where Rrepresents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.SELECTED DRAWING: None 【課題】耐衝撃性に優れ、加熱や延伸成形における白化のないメタクリル樹脂成形体およびその製造方法を提供する。【解決手段】メタクリル酸メチルを含む不飽和単量体（I）７０〜９９質量％、および下記一般式（１）で示される部分構造（１）を含む重合性官能基を有する（メタ）アクリル系重合体ブロック（ａ）と重合性官能基を有さない（メタ）アクリル系重合体ブロック（ｂ）とからなる（メタ）アクリル系ブロック共重合体（II）１〜３０質量％からなる重合性成分、ならびに重合開始剤（III）を含有するシラップを型に注入して重合するメタクリル樹脂成形体の製造方法。（式中、Ｒ1は水素原子または炭素数１〜２０の炭化水素基を表す）【選択図】なし