Inventors:
Kenneth W. Anderson - Lake Jackson TX
Pak-Wing S. Chum - Lake Jackson TX
David A. Eversdyk - Angleton TX
Lonnie G. Hazlitt - Lake Jackson TX
Pradeep Jain - Lake Jackson TX
Kalyan Sehanobish - Friendswood TX
Li-Min Tau - Lake Jackson TX
Assignee:
The Dow Chemical Company Midland - MI
International Classification:
C08F 800
US Classification:
525191, 525232, 525240, 428515, 428516, 428523
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 composition 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.