| 摘要 |
PURPOSE:To obtain the title composition improved in weathering resistance, by mixing a polyolefin with a specified hindered piperidine compound, a benzoate compound and a phosphorus compound each in a specified amount. CONSTITUTION:100pts.wt. polyolefin (A) (e.g., polyethylene or polypropylene) is mixed with 0.01-1pt.wt. hindered piperidine compound (B) of MW>=750, selected from among compounds of formulas I, II and III, etc. (wherein n is 2-20), 0.01-1pt.wt. hindered piperidine compound (C) of MW<=500, selected from among compounds of formulas IV, V and VI, etc. and 0.01-1pt.wt. phosphorus compound (E) selected from among compounds of formulas IX and X, etc. to obtain the purpose stabilized polyolefin composition. This composition can give a molding which can resist degradations such as cracking by light for a long time. |
