The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2023
Filed:
Sep. 28, 2020
Ineos Olefins & Polymers Usa, a Division of Ineos Usa Llc, League City, TX (US);
Joshua Allen Cottle, Houston, TX (US);
Mark Anthony Gessner, Houston, TX (US);
Robert Ernest Sander, Houston, TX (US);
Luc Dheur, Brussels, BE;
INEOS OLEFINS & POLYMERS USA, A DIVISION OF INEOS USA LLC, League City, TX (US);
Abstract
Bimodal high-density polyethylene polymer compositions with increased high melt strength and good processability. The compositions comprise a base resin having a density of about 945 kg/mto about 955 kg/m, and an ethylene polymer (A) having a density of at least about 968 kg/m, in an amount ranging from 45% to 55% by weight and an ethylene polymer (B) having a density lower than the density of polymer (A). The composition has a complex viscosity at a shear rate of 0.01 rad/s ranging from about 200 to 450 kPa·s and a complex viscosity at a shear rate of 100 rad/s ranging from about 1900 to 2500 Pa·s. Articles made from these compositions, such as pipes and fittings achieve long-term oxidative resistance and have a low wall thickness variability while maintaining high production output.