POLYPROPYLENE COMPOSITION WITH IMPROVED ADDITIVE RETENTION

A polypropylene composition characterized by improved additive retention can include at least 70 wt. % of a component (A) that is a random copolymer of propylene and ethylene produced with a metallocene-based polymerization catalyst. The component (A) can have a molecular weight distribution of at m...

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Bibliographische Detailangaben
1. Verfasser:	TERLINDEN, GEOFFROY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A polypropylene composition characterized by improved additive retention can include at least 70 wt. % of a component (A) that is a random copolymer of propylene and ethylene produced with a metallocene-based polymerization catalyst. The component (A) can have a molecular weight distribution of at most 4.0. The polypropylene composition can include from 0.001 to 2.0 wt. % of a component (B) that is an additive that migrates to a surface of the polypropylene composition. The polypropylene composition can include a component (C) that is a thermoplastic polymer different from component (A), and is not a metallocene polypropylene homopolymer. The polypropylene composition can have a gloss at 20° of at least 75. Articles can be produced from the polypropylene composition, including articles that require specific surface properties over an extended period of time.