Multimodal polymer

US9234061B2 · kind B2 · utility

Assignee

• Borealis AG · AT

Inventors

• Markku Vahteri · Porvoo, FI
• Antti Tynys · Linz, AT
• Erik Eriksson · Helsinki, FI
• Magnus Palmlöf · Svenljunga, SE
• Tuomas Noopila · Helsinki, FI
• Ilke Senol · Espoo, FI
• Saeid Kheirandish · Neuss, DE

Key dates

• Filing date: Mar 28, 2013
• Grant date: Jan 12, 2016
• Expiry date: Mar 28, 2033

Classification

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

Abstract

A multimodal ethylene copolymer with a density of at least 940 kg/m3 having an MFR21 in the range of 1 to 30 g/10 min and a Fmax/λI ratio of less than 60 cN/s; said ethylene copolymer comprising at least three components (I) an ethylene and optionally at least one C3-20 alpha olefin comonomer component forming 30 to 60 wt % of said ethylene copolymer; (II) an ethylene and optionally at least one C3-20 alpha olefin comonomer second component forming 30 to 60 wt % of said ethylene copolymer: and (III) an ethylene and optionally at least one C3-20 alpha olefin comonomer third component forming 3 to 20 wt % of said ethylene copolymer; wherein at least one of components (II) or (III) is a copolymer.