Exxonmobil Chemical Patents Inc.

William Thomas Haygood

Terry John Burkhardt

Robert Tan Li

James R Hart

Matthew Cornyn Kuchta

Udo M Stehling

Olefin polymerization processes using catalyst systems based on metallocenes and olefin, in particular, propylene polymers obtainable thereby. The metallocenes may be represented by the formula: wherein Mpreferably is zirconium or hafnium; and Ris different from hydrogen.

Polymerization process and polymer composition

Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: wherein Mpreferably is zirconium or hafnium; and Ris different from hydrogen.

Metallocenes and catalyst compositions derived therefrom

Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: 

Olefin polymerization processes using catalyst systems based on metallocenes and olefin, in particular, propylene polymers obtainable thereby. The metallocenes may be represented by the formula:&#x2003;wherein Mpreferably is zirconium or hafnium; and Ris different from hydrogen.

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Houston, TX, United States of America

William Thomas Haygood