Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2003-10-22
2009-11-17
Gonzalez, Porfirio Nazario (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C534S015000, C556S012000, C556S028000, C556S043000, C556S053000, C556S058000, C502S103000, C526S943000
Reexamination Certificate
active
07619106
ABSTRACT:
The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali metal compounds or alkaline earth metal compounds, heating the resulting reaction mixture to a temperature in the range from −78 to 250° C. and at least partially hydrogenating the reaction products in the presence of a suitable catalyst, to the corresponding hydrogenated or partially hydrogenated metallocenes and to their use as catalysts or as a constituent of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.
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Damrau Hans-Robert-Hellmuth
Duchiron Stéphanie
Garcia Valerie
Lelong Jean-Francois
Müller Patrik
Basell Polyolefine GmbH
Gonzalez Porfirio Nazario
Reid William R
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