| 摘要 |
PROBLEM TO BE SOLVED: To provide polyolefin based resin compositions capable of stably effecting continuous molding of polyolefin based films which excel in heat aging resistance and weatherability and, simultaneously, have improved yellowing resistance against heat and ultraviolet rays, and films and agricultural films obtained by molding these compositions. SOLUTION: Polyolefin based resin compositions comprise (A) 100 pts.wt. polyolefin based resin, (B) 0.01-1.0 pt.wt. hydrotalcite based compound, (C) 0.01-1.0 pt.wt. salt of a group II metal in the periodic table with a higher fatty acid, (D) 0.02-1.0 pt.wt. hindered amine light stabilizer, and (D) 0.01-1.0 pt.wt. specific phenolic antioxidant such as 3,9-bis[2- 3-(3-tert-butyl-4-hydroxy-5- methylphenyl)propionyloxy)-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5 ,5]undecane.
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