Polypropylen-Polyethylen-Zusammensetzung mit Verbesserter Zähigkeit

Details

Veröffentlichungs-Nr.

EP3733764

Aktenzeichen

EP19171935

Anmeldetag

30. April 2019

Veröffentlichung

14. Februar 2024

Erteilung

14. Februar 2024

Rechtsraum

EP

IPC

C08L23/12C08F2/00

Abstract

The present invention relates to a polymer composition comprising at least the following components A) 70 to 97 wt.-% based on the overall weight of the polymer composition of a polymer blend, comprising a1) 50 to 95 wt.-% of polypropylene; a2) 5 to 50 wt.-% of polyethylene; B) 3 to 30 wt.-% based on the overall weight of the polymer composition of a copolymer of propylene and 1-hexene, comprising b1) 30 to 70 wt.-% of a first random copolymer of propylene and 1-hexene; and b2) 30 to 70 wt.-% of a second random copolymer of propylene and 1-hexene having a higher 1-hexene content than the first random propylene copolymer b1); with the provisos that the weight proportions of components a1) and a2) add up to 100 wt.-%; the weight proportions of components b1) and b2) add up to 100 wt.-%; component A) has a MFR₂(230°C, 2.16 kg) determined according to ISO 1133 in the range from 1.0 to 50.0 g/10 min; component B) has a 1-hexene content in the range of 2.0 to 8.0 wt.-% based on the overall weight of component B); and the polymer composition is free from plastomers being an elastomeric copolymer of ethylene and 1-octene having a density in the range from 0.860 to 0.930 g/cm³. The present invention further relates to a process for manufacturing the polymer composition, to the use of component B) as a compatibilizer for polymer blends A) and to articles comprising the polymer composition according to the invention.

Anmelder

Firma

Borealis AG

Land

🇦🇹 Österreich

Fachgebiete