Organometallic complexes of lanthanides and their use in the...

Details Organometallic complexes of lanthanides and their use in the... Organometallic complexes of lanthanides and their use in the...

C - Chemistry, Metallurgy

07

F

C07F 5/00 (2006.01) C07F 5/06 (2006.01) C08F 4/52 (2006.01) C08F 4/54 (2006.01) C08F 36/04 (2006.01)

Patent

CA 2128459

Organometallic complexes of lanthanides with a well-defined stoichiometry which can be used in the stereospecific polymerization of unsaturated monomers, can be represented by the general formula: Me(OR)3*(ME1R1R2R3)x wherein, Me represents a metal with atomic number 21, 39, or an atomic number between 57 and 71, OR is an alkoxylic group of an alcohol; Me represents a metal of the group IIIB, whereas R1, R2, R3 can be H, or a linear, branched or cyclo-aliphatic alkyl radical containing from 1 to 10 carbon atoms and x is an integer (3 or 4) and depends on the type of alkoxide used. The preparation of the complexes is described and their use in the stereospecific polymerization of unsaturated monomers.

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