发明申请
- 专利标题: Thermoplastic Polyolefin In-Reactor Blends And Molded Articles Therefrom
- 专利标题(中): 热塑性聚烯烃反应器共混物和成型制品
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申请号: US12638843申请日: 2009-12-15
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公开(公告)号: US20100152360A1公开(公告)日: 2010-06-17
- 发明人: Peijun Jiang , Armenag H. Dekmezian , Joseph Gustaaf M. Flendrig
- 申请人: Peijun Jiang , Armenag H. Dekmezian , Joseph Gustaaf M. Flendrig
- 主分类号: C08L23/14
- IPC分类号: C08L23/14 ; C08K5/00
摘要:
This invention relates to a molded article comprising an in-reactor polymer blend comprising: (a) a first propylene polymer comprising 90 to 100 wt % propylene and from 0 to less than 10 wt % comonomer, said first propylene component having a Tm of 135° C. or more; and (b) a second propylene polymer comprising from 30 to 90 wt % propylene and 70 to 10 wt % comonomer, said second propylene polymer having an Mw of 30,000 g/mol or more, and said second propylene-containing polymer having a crystallinity different by at least 5% from the first polymer, wherein the polymer blend has: (a) a Tm of at least 135° C., (b) a melt flow rate of at least 70 dg/min, (c) a tensile strength of at least 8 MPa, (d) an elongation at break of at least 200%, (e) a tensile strength at break of 10 MPa or more, and (f) a GME 60280 scratch resistance of less than 1.2 DL at a scratching load of 5 Newtons.
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