Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2008-04-15
2008-04-15
Nazario-Gonzalez, Porfirio (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S043000, C556S054000, C556S058000, C548S402000, C502S103000, C502S117000, C526S160000, C526S170000, C526S943000
Reexamination Certificate
active
10532522
ABSTRACT:
The invention relates to a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature in the range from −78 to 250° C., to the corresponding metallocene complexes themselves and to their use as catalysts or as constituents 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
Garcia Valerie
Huriez Eric
Lelong Jean-François
Müller Patrik
Basell Polyolefine GmbH
Nazario-Gonzalez Porfirio
Raphael Jarrod N
Reid William R
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