| 摘要 |
PURPOSE:To provide a thermoplastic methacrylimide group-containing resin composition having improved weather resistance by adding a specific amount of a specified tetramethylpiperidine derivative to the resin. CONSTITUTION:The resin composition comprises (A) 100 pts.wt. of a methacrylimide group-containing polymer comprising A1: 5-100wt.% of an imide ring structure unit of formula I (R1 is H, 1-20C alkyl, etc.) and A2: 0-15wt.% of one or more kinds of monoethylenic unsaturated monomers, (B) 0.01-10 pts.wt., preferably 0.05-3 pts.wt., of a tetramethylpiperidine derivative (e.g., 4- benzoyloxy-2,6,6-tetramethylpiperidine) and, if necessary, (C) 0.01-5 pts.wt. of an UV absorbent comprising a triazole compound. |
