Polyethylene composition for injection molding

US5658992A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Jens Ehlers · Horst, DE
• Norbert Freisler · Dortmund, DE
• Hermann van Laak · Hünxe, DE

Key dates

• Filing date: Jan 26, 1996
• Grant date: Aug 19, 1997
• Expiry date: Jan 26, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyethylene compositions, which can be processed by injection molding, comprising 40% to 99% of a polyethylene having a limiting viscosity number of 1000 to 5000 ml/g and 60% to 1% of a polyethylene having a limiting viscosity number of 100 to 700 ml/g. The molecular weight distribution of each of the polyethylene components is less than 9. The limiting viscosity number of the compositions is at least 1500 ml/g. Shaped articles produced from these compositions have excellent wear resistance, high notched impact strength, and do not delaminate.