Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-09-27
2005-09-27
Lorengo, J. A. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S102000, C502S104000, C502S110000, C502S152000
Reexamination Certificate
active
06949489
ABSTRACT:
The present invention relates to a solid supported catalyst usable for the polymerization of conjugated dienes, to a process for the preparation of said catalyst and to a process for the polymerization of conjugated dienes using said catalyst. The solid supported catalyst according to the invention comprises the reaction product ofa) a complex represented by formula M(Ar)(AlX4)3, where M is a rare earth metal selected from among the metals having an atomic number of from 57 to 71, inclusive in Mendeleyev's periodic table of elements, Ar is an aromatic hydrocarbon solvent, Al is aluminum and X is selected from the group consisting of fluorine, chlorine, bromine and iodine, andb) a solid support comprising at least one inorganic metal oxide compound. The invention also provides a polymerization process for conjugated dienes in an inert hydrocarbon solvent in which the said catalyst is used to polymerize the conjugated dienes in the presence of an activator compound comprising a trialkylaluminum or dialkylaluminum hydride.
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Barbotin Fanny
Boisson Christophe
Spitz Roger
Burns Doane , Swecker, Mathis LLP
Lorengo J. A.
Michelin & Recherche et Technique S.A.
Pasterczyk J.
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