Metallocene Polyethylene for Pipe Applications

Metallocene Polyethylene for Pipe Applications

In an embodiment, a pipe includes a polyethylene composition that includes ethylene and an alpha-olefin comonomer, wherein the polyethylene composition has a melt index of from 0.1 g/10 min to 1 g/10 min, a density of from 0.93 g/cm3 to 0.94 g/cm3, and a melt index ratio of from 40 to 70, and wherei...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Winesett, Donald A, Peng, Haiqing, Barzin, Roel, Mei, Yuan
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:In an embodiment, a pipe includes a polyethylene composition that includes ethylene and an alpha-olefin comonomer, wherein the polyethylene composition has a melt index of from 0.1 g/10 min to 1 g/10 min, a density of from 0.93 g/cm3 to 0.94 g/cm3, and a melt index ratio of from 40 to 70, and wherein the pipe has a 20° C. long term hydrostatic strength of from 5 MPa to 10.1 MPa. In another embodiment, a method of making a pipe includes extruding any polyethylene composition described herein. In another embodiment, an article includes a polyethylene composition described herein. In another embodiment, a polyethylene composition having a melt index of from 0.1 g/10 min to 1 g/10 min, a density of from 0.93 g/cm3 to 0.94 g/cm3, and a melt index ratio of from 40 to 70 is provided.