High OTR films made from homopolymer polypropylene and...

Details High OTR films made from homopolymer polypropylene and... High OTR films made from homopolymer polypropylene and...

2005-10-11

2005-10-11

Tarazano, D. Lawrence (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

C428S343000, C428S352000, C428S515000, C428S516000, C428S523000, C428S910000, C525S240000

Reexamination Certificate

active

06953617

ABSTRACT:
A polyolefin blend having in a range of 40 to less than 90% by weight of a high modulus, isotactic polypropylene; and in a range of 10 to 60% by weight of a 1-butene/ethylene copolymer; the 1-butene/ethylene copolymer having about 0.5 to about 10 wt % of an ethylene. A polyolefin blend can be in a form of a transparent, oriented film having a biaxially oriented layer with an oxygen transmission rate of at least about 200 cc/100 sq. in./day/atmosphere (3077 cc/sq. m./24h/atmosphere), a tensile modulus of at least about 160,000 psi (1.103 GPa) and a haze value of no greater than about 3% measured at a thickness of about 1 mil (25 μm).

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http://www.basell.com/portal/site/basell/index.jsp?epicontent=GENERIC&brochure_start_doc=0&epi_menultemID=483732eb15b68bdf5305285a0f034a0&displayproperty03=6580&displayproperty02=6680&displayproperty01=6280&query=1600SA&staticontent_title_sort_order=&se Basell.com web link (date 2003).

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