Films of propylene copolymers

Details Films of propylene copolymers Films of propylene copolymers

2005-12-09

2010-06-01

Harlan, Robert D. (Department: 1796)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

C428S517000, C428S520000, C428S521000, C428S522000, C525S240000, C524S515000, C524S427000, C524S451000

Reexamination Certificate

active

07727638

ABSTRACT:
The invention provides for a film including a layer made from a composition, the composition produced from 30 percent by weight or more of a first polymer component (FPC), wherein said FPC includes a copolymer of propylene and from 6 to 30 percent by weight of another alpha-olefin, and having a melting point derived from stereoregular polypropylene sequences, as determined by differential scanning calorimetry (DSC) of 105° C. or less, and a heat of fusion of 45 J/g or less; and a second polymer component (SPC); wherein the SPC includes a thermoplastic polymer other than the FPC.

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