LIQUID RARE-EARTH ELEMENT CARBOXYLATE COMPOSITION, PROCESS OF PREPARING THIS COMPOSITION, AND POLYMERIZATION PROCESS Russian patent published in 2007 - IPC C07C51/41 B01J23/10 C08F36/04 

Abstract RU 2297407 C1

FIELD: polymerization catalysts.

SUBSTANCE: invention provides rare-earth element carboxylate composition used as a part of catalytic system for polymerization of conjugated dienes and containing rare-earth element carboxylate and organic solvent, which composition is characterized by additionally containing oxyalkylenated C1-C20-alcohol with molecular mass 90 to 100000 or mixture of such oxyalkylenated alcohols. Described is also preparation of liquid rare-earth element carboxylate composition as well as conjugated diene polymerization process in presence of catalytic system to give polymer with high content of 1,4-cis units.

EFFECT: enabled preparation of stable composition suitable for preparation of stereospecific diene polymerization catalyst.

5 cl, 23 ex

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RU 2 297 407 C1

Authors

Busygin Vladimir Mikhajlovich

Mal'Tsev Leonid Veniaminovich

Shepelin Vladimir Aleksandrovich

Safin Damir Khasanovich

Filimonov Viktor Al'Bertovich

Burganov Tabriz Gil'Mutdinovich

Rukhljadev Oleg Vasil'Evich

Dates

2007-04-20Published

2006-03-09Filed