| 摘要 |
PROBLEM TO BE SOLVED: To provide a visor containing a methacrylic resin, having high heat resistance, and excellent in transparency, moist heat resistance, heat stability and molding processability.SOLUTION: A visor contains a methacrylic ester monomer unit (A): 50 to 97 mass%, a structure unit having at least one kind of ring structures selected from a group consisting of a maleimide based structure unit, a glutaric acid anhydride structure unit and a lactone ring structure unit in a main strain (B): 3 to 30 mass%, and another vinyl based monomer unit which can be polymerized to a methacrylic ester monomer (C): 0 to 20 mass%, and a methacrylic resin having a weight average molecular weight measured by gel permeation chromatography (GPC) of 65,000 to 300,000 (I). |
