Lithium alkoxide diamines as modifiers for polymerization of...

Details Lithium alkoxide diamines as modifiers for polymerization of... Lithium alkoxide diamines as modifiers for polymerization of...

C - Chemistry, Metallurgy

08

F

252/123, 402/422

C08F 4/48 (2006.01) C08F 36/04 (2006.01) C08F 36/06 (2006.01)

Patent

CA 1198408

-21- LITHIUM ALKOXIDE DIAMINES AS MODIFIERS FOR POLYMERIZATION OF DIENES USING LITHIUM-BASED INITIATORS Abstract A process and catalyst system is disclosed herein for the preparation of (co)polymers having a 1,2-microstructure of between 20 and 90 percent. These (co)polymers are prepared in a hydrocarbon or non-polar solvent from a monomer system which contains at least one 1,3-diene monomer. The catalyst system which is employed in the production of the (co)polymers of the present invention is a combination of a chelated lithium alkoxide diamine modifier and an anionic initiator based on lithium.

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