发明申请
US20140343205A1 POLYPROPYLENE COMPOSITION WITH IMPROVED ADDITIVE RETENTION 审中-公开
具有改善添加剂保持性的聚丙烯组合物

POLYPROPYLENE COMPOSITION WITH IMPROVED ADDITIVE RETENTION
摘要:
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.
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