06127484 is referenced by 32 patents and cites 15 patents.

A multiple stage or multiple zone process for making olefin polymers is disclosed. A single-site catalyst, preferably one that contains a heteroatomic ligand, is used in the first stage or zone, and a Ziegler-Natta catalyst is used at a higher temperature in later stages or zones. A parallel multiple zone process is also described. The processes, which can be performed adiabatically, give polymers with improved thermal processing ability.

Title
Olefin polymerization process
Application Number
9/302059
Publication Number
6127484
Application Date
April 29, 1999
Publication Date
October 3, 2000
Inventor
James H Meas Jr
Cincinnati
OH, US
Mark P Mack
West Chester
OH, US
Bradley P Etherton
Cincinnati
OH, US
Leonard V Cribbs
Hamilton
OH, US
Agent
Shao Guo
Assignee
Equistar Chemicals
TX, US
IPC
C08L 23/04
C08L 23/00
C08F 8/00
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