Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2007-03-20
2007-03-20
Nazario-Gonzalez, Porfirio (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S001000, C556S012000, C556S043000, C556S053000, C556S058000, C526S126000, C526S160000, C502S103000, C502S117000
Reexamination Certificate
active
10532570
ABSTRACT:
The invention relates to a process for preparing racemic metallocene biphenoxide complexes by reacting bridged 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 biphenoxide complexes 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
Lelong Jean-François
Müller Patrik
Sidot Christian
Basell Polyolefine GmbH
Nazario-Gonzalez Porfirio
Raphael Jarrod N.
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