Organo-Lewis acid as cocatalyst for cationic homogenous metalloc

Details Organo-Lewis acid as cocatalyst for cationic homogenous metalloc Organo-Lewis acid as cocatalyst for cationic homogenous metalloc

1998-12-23

2000-07-11

Wu, David W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526170, 526172, 526351, 526352, 526348, 526943, 568606, 568617, C08F 444

Patent

active

060874600

ABSTRACT:
The synthesis of the organo-Lewis acid perfluorobiphenylborane (PBB) and the activation of metallocenes for the formation of a variety of highly active homogeneous Ziegler-Natta metallocene olefin polymerization, copolymerization and ring-opening polymerization catalysts is described.

REFERENCES:
patent: 5599761 (1997-02-01), Turner
patent: 5721183 (1998-02-01), Neithamer
patent: 5728784 (1998-03-01), Po'et al.
Marks, Tobin J., Surface--Bound Metal Hydrocarbyls. Organometallic Connections Between Heterogeneous and Homogeneous Catalysts, Accounts of Chemical Research, vol. 25, No. 2, pp. 57-65, Feb., 1992.
Yang et al., Cationic Zirconocene Olefin Polymerization Catalysts Based on the Organo-Lewis Acid Tris(pentafluoropehnyl)borane. A Synthetic, Structural, Solution Dynamics, and Polymerization Catalytic Study, J. Am. Chem. Soc., 116., 10015-10031. 1994.

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