High flow heterophasic polyolefin compositions having improved stiffness/impact balance

US10759931B2 · kind B2 · utility

Assignee

• Borealis AG · AT

Inventors

• Claudia Kniesel · Linz, AT
• Minna Aarnio-Winterhof · Orth an der Donau, AT
• Karlheinz Friedrich · Weiden am See, AT
• Markus Gahleitner · Ansfelden, AT
• Friedrich Berger · Linz, AT

Key dates

• Filing date: Mar 1, 2017
• Grant date: Sep 1, 2020
• Expiry date: Jun 8, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2314/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

High flow nucleated heterophasic polyolefin compositions comprising a matrix comprising a propylene homo- and/or copolymer and an elastomeric alpha-olefin copolymer phase dispersed in the matrix, which have rather high melt flow rate, improved impact strength but also an excellent impact/stiffness balance and a process for the preparation of such a heterophasic polyolefin composition, articles made therefrom and uses of the heterophasic polyolefin composition.