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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.:

US 6319989 B1

PDFFull Text
Date of Patent:
Nov. 20, 2001

Filed:

Jan. 20, 2000

Broad mwd, compositionally uniform ethylene interpolymer compositions, process for making the same and article made therefrom

Applicant:
Inventors:

Kenneth W. Anderson, Lake Jackson, TX (US);

Pak-Wing S. Chum, Lake Jackson, TX (US);

David A. Eversdyk, Angleton, TX (US);

Lonnie G. Hazlitt, Lake Jackson, TX (US);

Pradeep Jain, Lake Jackson, TX (US);

Kalyan Sehanobish, Friendsville, TX (US);

Li-Min Tau, Lake Jackson, TX (US);

Assignee:

The Dow Chemical Company, Midland, MI (US);

Attorney:
Primary Examiner:

Nathan M Nutter

Int. Cl.
CPC ...
C08F 8/00 ; C08L 9/00 ; C08L 2/300 ; C08L 2/304 ;
U.S. Cl.
CPC ...
C08F 8/00 ; C08L 9/00 ; C08L 2/300 ; C08L 2/304 ;
Abstract

The present invention pertains to a continuous process and polymerization system characterized by separate injection of catalyst and make-up feed, an ethylene interpolymer composition characterized as having broad molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a compostion and a fabricated article made from such composition. The novel composition is characterized as having a melt flow ratio, I,/I,, from 8 to 30, a M,/M,of greater than 4 as determined by gel permeation chromatography, a melt index, I,, from 0.01 to 1000 grams/10 minutes, preferably greater that 0.1 to 10 grams/10 minutes, and a density less than 0.945 g/cm,. The novel composition exhibits good processibility and improved toughness properties, especially excellent film tear and impact resistance, and is particularly well-suited for use in applications such as high performance trash can liners and heavy duty shipping bags.

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Anderson, Kenneth. (2001). Broad mwd, compositionally uniform ethylene interpolymer compositions, process for making the same and article made therefrom (U.S. Patent No. 6319989). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6319989

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