Polymers with improved processability for pipe applications

US9828451B2 · kind B2 · utility

Assignee

• Chevron Phillips Chemical Company LP · US

Inventors

• Vivek Rohatgi · Owasso, US
• Yongwoo Inn · Bartlesville, US
• Ashish M. Sukhadia · Bartlesville, US
• Qing Yang · Bartlesville, US
• Paul J. DesLauriers · Bartlesville, US

Key dates

• Filing date: Oct 24, 2014
• Grant date: Nov 28, 2017
• Expiry date: Apr 9, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A crosslinked metallocene-catalyzed polyethylene copolymer having a higher molecular weight (HMW) component and lower molecular weight (LMW) component wherein the HMW component is present in an amount of from about 10 wt. % to about 30 wt. % and wherein the LMW component is present in an amount of from about 70 wt. % to about 90 wt. %.