Polynuclear metallocene preparation and use

Details Polynuclear metallocene preparation and use Polynuclear metallocene preparation and use

1995-05-12

1998-11-03

Caldarola, Glenn A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526114, 526118, 526119, 526904, 526943, 556 43, 556 53, 556 58, C08F 406, C08F 472, C08F 444, C07F 900

Patent

active

058309586

ABSTRACT:
A process for preparing polynuclear metallocenes by reacting a metallocene in which one of the cyclopentadienyl-containing radicals has a substituent having olefinic or acetylenic unsaturation with a second metallocene having a metal which comes from groups IVb to VIb of the periodic table and a metal-hydride bond. The use of the resulting metallocenes in the polymerization of olefins is disclosed, including techniques for using such metallocenes to produce solid prepolymerized metallocene-containing catalyst systems suitable for use in the polymerization of olefins.

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A. Hubert et al., "Base-catalysed Prototropic Isomerisations. Part II. The Isomerisation of N-Prop-2-ynyl Heterocycles into N-Substituted Allenes and Acetylenes", J. Chem. Soc. (C), pp. 606-608, 1968.
M. Fessler et al., "nido-Carborane Building-Block Reagents. 1. Polycyclic Arene RR'C2B4H6 Derivatives: Synthesis via Indenyl and Fluorenyl Alkynes and Metal-Promoted Oxidative Fusion", Inorg. Chem., vol. 7, pp. 3069-3075, 1988.
Angew. Chem. Int. Ed. Engl.,vol. 15, No. 6, pp. 333-340 (1976), Schwartz et al.

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