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US 2015/0086739 A1Published application
Unoriented film based on soft polypropylene
AssigneeBorealis AG
InventorsKlaus Bernreitner, Markus Gahleitner, Manfred Gruenberger, Martina Sandholzer
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Abstract
Unoriented film comprising at least one layer of a polymer composition comprising a styrenic based elastomer and a propylene copolymer.
Claims15
Unoriented film comprising at least one layer (L1), said layer (L1) comprises at least 70 wt.% of a polymer composition (Co), said composition (Co) comprises:
- (a) a propylene copolymer (A) having
- (a1) a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of more than 2.0 to 15.0 g/10 min,
- (a2) a comonomer content in the range of more than 7.5 to 16.5 wt.%, and
- (a3) a xylene cold soluble content (XCS) determined according ISO 16152 (25° C.) in the range of 20.0 to 55.0 wt.%,
- wherein
- (a4) the comonomer content of xylene cold soluble (XCS) fraction of the propylene copolymer is in the range of 14.0 to 30.0 wt.%, and
- (b) a styrenic based elastomer(s) (B) having a styrene content in the range of 5 to equal or below 15 wt.% wherein the polypropylene (A) has a melting temperature in the range of 145 to 160° C.
4 more elements
Dependencies are inferred from the claim text.