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US 2020/0048443 A1Published application
Heterophasic polypropylene composition with improved mechanical and optical properties
AssigneeBorealis AG
InventorsMarkus Gahleitner, Jingbo Wang, Friedrich Berger, Johanna Lilja
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Abstract
The present invention relates to a nucleated heterophasic polypropylene composition, which shows improved properties in view of mechanical and optical behaviour as well as low amounts of extractable. The present invention also relates to films and final articles made out of the heterophasic polypropylene composition, as well as their use in packaging, especially food packaging applications.
Claims13
A heterophasic polypropylene composition wherein an MFR230/2.16 according to ISO1133 of at most 6.0 g/10 min and comprising:
- a. ≥80.0 wt. % of a polypropylene homopolymer and
- b. <20.0 wt. % of an elastomeric ethylene-propylene rubber fraction,
- c. a polymeric nucleating agent and
- d. at least one further nucleating or clarifying agent
- wherein the heterophasic polypropylene composition further comprises a xylene soluble fraction (XCS) of 5.0 to 20.0 wt. % and in that the elastomeric ethylene-propylene rubber fraction (b) has an C2(XCS) of 20.0 to 38.0 wt. %.
2 more elements
(canceled)
Dependencies are inferred from the claim text.