Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2005-06-30
2008-12-16
Nazario-Gonzalez, Porfirio (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S018000, C556S030000, C502S103000, C502S155000, C526S943000
Reexamination Certificate
active
07465818
ABSTRACT:
A process for the racemoselective preparation of ansa-metallocene complexes of the formula (I),whereR1, R1′, R2, R2′are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms,R3, R3′are identical or different and are each an organic radical having from 1 to 40 carbon atoms,T, T′ are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms,A is a divalent atom or a divalent group,Z is a divalent atom or a divalent group,E is P, As or Sb,M1is an element of group 4 of the Periodic Table of the Elements,M2is an alkali metal, an alkaline earth metal or a magnesium monohalide fragment,p is 1 or 2.
REFERENCES:
patent: 6133277 (2000-10-01), Wigerinck et al.
patent: 6153777 (2000-11-01), Jordan et al.
patent: 2004/0063574 (2004-04-01), Theopold et al.
patent: 2004/037840 (2004-05-01), None
R. Gleiter et al., “Zur Reacktion von Bis(trimethylphosphan)titanocen mit Ketonen,”Chem. Ber., vol. 127, p. 1797-1798 (1994).
Basell Polyolefine GmbH
Nazario-Gonzalez Porfirio
Reid William R.
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