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US 2022/0017733 A1Published application
Polypropylene composition with improved optical properties and whitening resistance
AssigneeBorealis AG
InventorsJingbo Wang, Markus Gahleitner, Klaus Bernreitner, Pauli Leskinen
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Abstract
The invention is related to polypropylene compositions combining high impact strength with good haze and additionally showing good stress whitening resistance.
Claims17
A polypropylene composition comprising:
- a) a propylene homopolymer (H-PP) and
- b) a propylene copolymer (C-PP) of propylene and 1-hexene, wherein
- i. the propylene copolymer (C-PP) has an overall 1-hexene content in the range of 3.8 to 10.0 wt.-%,
- ii. the propylene copolymer (C-PP) has a xylene soluble content (XCS) in the range of 8.0 to 30.0 wt.-%, and
- iii. the weight ratio [(C-PP)/(H-PP)] of the propylene copolymer (C-PP) to the propylene homopolymer (H-PP) is in the range of 10/90 to 45/55.
2 more elements
16 kg) determined according to ISO 1133 in the range of 0.2 to 9.0 g/10 min.
Dependencies are inferred from the claim text.