SCRATCH RESISTANT POLYOLEFINS

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 o...

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Bibliographische Detailangaben
Hauptverfasser: SOLERA, PETER SHELSEY, SHARMA, ASHUTOSH H, KASPERS, SARAH ROOT
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung: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.