Invention Grant
US08067501B2 Propylene-based blown films with improved performance, stability and elastic properties compared to polyethylene films
有权
与聚乙烯薄膜相比,具有改进的性能,稳定性和弹性性能的丙烯基吹塑薄膜
- Patent Title: Propylene-based blown films with improved performance, stability and elastic properties compared to polyethylene films
- Patent Title (中): 与聚乙烯薄膜相比,具有改进的性能,稳定性和弹性性能的丙烯基吹塑薄膜
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Application No.: US12644252Application Date: 2009-12-22
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Publication No.: US08067501B2Publication Date: 2011-11-29
- Inventor: David Michael Fiscus , Narayanaswami Raja Dharmarajan , Michael Charles Bulawa , Michael Glenn Williams
- Applicant: David Michael Fiscus , Narayanaswami Raja Dharmarajan , Michael Charles Bulawa , Michael Glenn Williams
- Applicant Address: US TX Houston
- Assignee: ExxonMobil Chemical Patents Inc.
- Current Assignee: ExxonMobil Chemical Patents Inc.
- Current Assignee Address: US TX Houston
- Main IPC: C08F8/00
- IPC: C08F8/00 ; C08L23/04 ; C08L23/10 ; C08L9/00

Abstract:
A thermoplastic composition for cast and blown films and the resulting films thereof are provided. The film can include about 10 wt % to 80 wt % propylene-based copolymer having at least 50 wt % propylene-derived units and 5 wt % to 30 wt % alpha-olefin comonomer, based on the total weight of the polymer that exhibits a melting point of about 100° C. to 170° C., and a MFR of about 200 dg/min or less. The film can include about 20 wt % to 90 wt % polypropylene homopolymer having a melting point of about 140° C. to 190° C. The film can have a thickness of about 10 μm to 100 μm, a haze of 13% or less, a 1% MD Secant tensile modulus of 55,000 to 150,000 psi, a machine direction Elmendorf tear of at least 5 g/mil and a transverse direction Elemdorf tear of at least 300 g/mil, and a 45 degree gloss of at least 70.
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