发明申请
- 专利标题: POLYPROPYLENE COMPOSITION WITH IMPROVED ADDITIVE RETENTION
- 专利标题(中): 具有改善添加剂保持性的聚丙烯组合物
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申请号: US14345298申请日: 2012-09-18
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公开(公告)号: US20140343205A1公开(公告)日: 2014-11-20
- 发明人: Geoffroy Terlinden
- 申请人: TOTAL RESEARCH & TECHNOLOGY FELUY
- 优先权: EP11181790.4 20110919
- 国际申请: PCT/EP2012/068347 WO 20120918
- 主分类号: C08K5/103
- IPC分类号: C08K5/103 ; B29C47/00 ; B29C45/00 ; B29C49/06 ; B29C49/04
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.