| 摘要 |
Polyolefin substrates, for example polypropylene, polyethylene or thermoplastic olefin molded parts, are made scratch resistant and heat and light stable by the incorporation therein of an additive combination of b) a carboxylic acid reagent functionalized olefin polymer or copolymer, c) a primary or secondary fatty acid amide and d) a combination of a low molecular weight and a high molecular weight hindered amine light stabilizer. The present polyolefins exhibit good weatherability, scratch resistance, good processability, good mechanical strength, good gloss retention and are non-sticky. The carboxylic acid reagent functionalized olefin polymer is for example maleic anhydride grafted polypropylene or polyethylene, or is a reaction product of maleic anhydride and an alpha-olefin, or is a tallow alcohol ester of said maleic anhydride products. The fatty acid amide is for example oleyl palmitamide or stearyl erucamide. |
