06025448 is referenced by 86 patents and cites 265 patents.

A gas phase fluidized bed process is described for producing ethylene polymers having improved processability and an MWD of less than about 2.9. Multiple reactors in series or parallel may be used to produce in-situ blended polymers. Each reactor can separately have a constrained geometry catalyst or a conventional Ziegler-Natta catalyst as needed for obtaining in-situ blended polymer with the desired properties as long as there is a constrained geometry catalyst in at least one reactor. Olefin polymers can be produced according to this invention which have low susceptibility to melt fracture, even under high shear stress conditions.

Title
Gas phase polymerization of olefins
Application Number
208068
Publication Number
6025448
Application Date
June 3, 1996
Publication Date
February 15, 2000
Inventor
James C Stevens
Richmond
TX, US
David R Wilson
Midland
MI, US
Kevin P Peil
Auburn
MI, US
Brian W S Kolthammer
Lake Jackson
TX, US
Bruce A Story
Lake Jackson
TX, US
Robert D Swindoll
Richwood
TX, US
Assignee
The Dow Chemical Company
MI, US
IPC
C08F 4/643
View Original Source