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:
Jul. 14, 2009
Filed:
Oct. 15, 2008
William J. Michie, Jr., Missouri City, TX (US);
Debra R. Wilson, Missouri City, TX (US);
Stephanie M. Whited, Charleston, WV (US);
Michael A. Kinnan, N. Canton, OH (US);
William J. Michie, Jr., Missouri City, TX (US);
Debra R. Wilson, Missouri City, TX (US);
Stephanie M. Whited, Charleston, WV (US);
Michael A. Kinnan, N. Canton, OH (US);
Dow Global Technologies, Inc., Midland, MI (US);
Abstract
The instant invention is a high-density polyethylene composition, and method of making the same. The high-density polyethylene composition of the instant invention includes an ethylene alpha-olefin copolymer having a density in the range of 0.935 to 0.952 g/cm, a melt index (I) in the range of 30 to 75 g/10 minutes, an I/Iratio in the range of 13-35, a M/Mratio in the range of 3.5-8. The high-density polyethylene composition has a brittleness temperature of at least less than −20° C. The process for producing a high-density polyethylene composition according to instant invention includes the following steps: (1) introducing ethylene, and an alpha-olefin comonomer into a reactor; (2) copolymerizing the ethylene with the alpha-olefin comonomer in the reactor; and (3) thereby producing the high-density polyethylene composition, wherein the high-density polyethylene composition having a density in the range of 0.935 to 0.952 g/cm, a melt index (I) in the range of 30 to 75 g/10 minutes, an I/Iratio in the range of 13-35, a M/Mratio in the range of 3.5-8, and a brittleness temperature of at least less than −20° C.