Long fiber-reinforced propylene composition for use in a thin part

US10982059B2 · kind B2 · utility

Assignee

• Celanese International Corporation · US

Inventors

• Jimmy Kanuteh · Offenbach am Main, DE
• Markus Dehe · Lahnstein, DE
• Uta Schoenwald-Otten · Rodenbach, DE
• Juergen Stuermer · Gießen, DE
• Paul Kenny · Holmen, US
• Timothy L. Tibor · Winona, US

Key dates

• Filing date: Jan 9, 2018
• Grant date: Apr 20, 2021
• Expiry date: Oct 27, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2314/06
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 30 wt. % to about 80 wt. % of the composition, and a plurality of long reinforcing fibers that are distributed within the polymer matrix. The fibers constitute from about 20 wt. % to about 70 wt. % of the composition. The polymer composition exhibits a spiral flow length of about 450 millimeters or more as determined in accordance with ASTM D3123-09, and after aging at a temperature of 150° C. for 1,000 hours, a Charpy unnotched impact strength greater than about 15 kJ/m2 as determined at a temperature of 23° C. in accordance with ISO Test No. 179-1:2010.