Processes to produce metallocene compounds and polymerization pr

Details Processes to produce metallocene compounds and polymerization pr Processes to produce metallocene compounds and polymerization pr

1996-06-14

1998-03-10

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526308, 526281, 5263483, 5263484, 5263485, 5263486, 526335, 526346, 556 43, 556 53, 556 58, 502108, 502152, 260665R, C08F 468, C08F 464, C08F 469

Patent

active

057262640

ABSTRACT:
A process to produce an ethylene-bridged-metallocene-transition-metal compound that has an omega-alkenyl substitution on said ethylene bridge is provided. Said process comprises: contacting a diolefin compound with a peracid compound to form an omega-alkenyl oxirane compound; contacting said omega-alkenyl oxirane compound with an organometal compound to form an organo-omega-alkenyl-alcohol compound; contacting said organo-omega-alkenyl-alcohol compound with an organosulfur compound to form an organo-omega-alkenyl-organosulfur ester compound; contacting said organo-omega-alkenyl-organosulfur ester compound with an organometal to form an orgaomega-alkenyl-organo compound; contacting said organo-omega-alkenyl-organo compound with a transition metal compound to form a organo-omega-alkenyl-organo-transition compound. Additionally, processes to polymerize olefins using these compounds is provided.

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patent: 5565592 (1996-10-01), Patsidis et al.
patent: 5594078 (1997-01-01), Welch et al.
Rieger et al., Bernhard, Chem. Ber. "Chiral Epoxides as Building Blocks for Ethylene-Bridged ansa-Mettalocene Complexes--Synthesis of C.sub.1 -Symmetrical Zirconocene Dichlorides with Two Different Cyclopentadienyl Units", (1992), 125, pp. 2373-2377.
Rieger et al., Bernhard, Organometallics "Unsymmetric ansa-Zirconocene Complexes with Chiral Ethylene Bridges: Influence of Bridge Conformation and Monomer Concentration on the Stereoselectivity of the Propene Polymerization Reaction", (1994), 13, pp. 647-653.

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