WO/2002/002576 is referenced by 4 patents.

This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula wherein M?1¿ is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chronium, molybdenum and tungsten, preferably zirconium, hafnium or titanium, most preferably zirconium; R?9¿ and R?11¿ are identical or different and are a Group IVA radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size, preferably a tertiary butyl group.

Title
(indenyl) Metallocene compounds
Application Number
PCT/US2001/016573
Publication Number
2002/002576
Application Date
May 21, 2001
Publication Date
January 10, 2002
Inventor
Kuchta Matthew C
Vizzini James C
Li Robert T
Haygood William T
Hart James R
Stehling Udo M
Burkhardt Terry J
Agent
SCHMIDT Paige
Assignee
Exxonmobil Chemical Patents
IPC
C08F 04/659
C08F 210/16
C08F 210/06
C08F 110/02
C08F 10/00
C07F 17/00
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